December in Hawaii offers a generally pleasant tropical climate, though variations exist across the islands and elevations. Expect daytime temperatures averaging in the mid-70s Fahrenheit (low 20s Celsius) at sea level, with cooler conditions at higher altitudes. Rainfall is more frequent during this month, contributing to lush vegetation and cooler evenings. Ocean temperatures remain comfortable for swimming and other water activities.
Understanding typical December weather conditions is crucial for planning a Hawaiian vacation. Packing appropriate clothing, booking suitable accommodations, and scheduling outdoor activities all benefit from accurate weather information. Historically, December marks the beginning of the wetter season in Hawaii, influenced by trade wind patterns and seasonal variations. This understanding allows visitors to anticipate potential rain showers and adjust itineraries accordingly.
This information serves as a starting point for exploring specific aspects of Hawaiian weather in December. Further topics include regional climate variations, typical wave heights for surfing, optimal locations for whale watching, and recommended attire for various activities.
1. Mild Temperatures
Mild temperatures characterize December weather in Hawaii, playing a significant role in the overall climate experience. While not as consistently warm as summer months, daytime temperatures typically hover in the mid-70s Fahrenheit (low 20s Celsius) at sea level. This comfortable range allows for a variety of outdoor activities without extreme heat. The moderating influence of the Pacific Ocean prevents significant temperature fluctuations, creating a pleasant environment even during the wetter season. This mildness contrasts with continental winter climates, making Hawaii an attractive destination for those seeking respite from colder conditions. For instance, visitors can comfortably hike, explore beaches, and participate in water sports without needing heavy winter clothing.
This mild temperature profile contributes significantly to Hawaii’s appeal as a winter destination. The absence of extreme heat or cold allows for greater flexibility in planning activities. Visitors can comfortably transition from swimming and sunbathing to hiking volcanic trails or exploring lush rainforests. The moderate temperatures also extend into the evenings, allowing for comfortable dining and outdoor entertainment. This pleasant climate fosters a relaxed atmosphere conducive to enjoying the diverse natural beauty of the islands. Furthermore, the mild weather minimizes the need for extensive heating or cooling, reducing energy consumption and contributing to a more sustainable tourism experience.
In summary, mild temperatures are a defining characteristic of December weather in Hawaii. This comfortable climate significantly enhances the visitor experience, allowing for a wider range of activities and contributing to the islands’ reputation as a desirable winter getaway. Understanding this aspect of Hawaiian weather allows travelers to pack appropriately and plan itineraries that maximize their enjoyment of the islands’ diverse offerings, from volcanic landscapes to pristine beaches.
2. Increased Rainfall
December marks the beginning of Hawaii’s wetter season, a key factor influencing overall weather conditions. Understanding the nature and implications of increased rainfall is crucial for planning any December trip to the islands. This higher precipitation shapes the landscape, impacts outdoor activities, and contributes to the unique ambiance of a Hawaiian winter.
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Regional Variation
Rainfall distribution varies significantly across the Hawaiian Islands. Windward sides, typically the north and east-facing slopes, experience considerably more rainfall than leeward areas. For example, Hilo on the Big Island often receives substantial rainfall in December, while Kona, on the leeward side, remains comparatively drier. Travelers should consider these regional differences when selecting destinations and planning activities.
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Impact on Activities
Increased rainfall can impact outdoor activities. While brief showers are common, prolonged periods of rain may necessitate adjustments to itineraries. Hikers should be prepared for muddy trails and potential flash floods. Beachgoers might experience interruptions to sunbathing and swimming. Checking local weather forecasts frequently and having alternative indoor activities in mind is advisable.
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Landscape Transformation
Higher rainfall contributes to the vibrant green landscapes characteristic of Hawaii in December. Waterfalls flow more abundantly, vegetation flourishes, and the islands take on a lush, revitalized appearance. This increased rainfall enhances the natural beauty, offering unique photographic opportunities and a different perspective on the islands’ scenery compared to drier months.
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Weather Patterns
Increased rainfall often occurs in the form of brief, intense showers interspersed with periods of sunshine. These showers contribute to higher humidity levels and can create dramatic rainbows. Understanding this pattern allows visitors to anticipate passing showers and pack accordingly. Lightweight, quick-drying clothing and rain gear are recommended.
In conclusion, increased rainfall is an integral component of December weather in Hawaii. Its influence extends beyond simple precipitation, shaping the landscape, impacting activities, and contributing to the overall experience. By understanding these various facets of increased rainfall, travelers can prepare effectively and appreciate the unique characteristics of a Hawaiian December.
3. Humid conditions
Humidity is a significant factor influencing December weather in Hawaii. Increased rainfall during this period contributes to higher humidity levels, impacting visitor comfort and requiring specific considerations for clothing and activity planning. Understanding the effects of humidity is crucial for a pleasant Hawaiian December experience.
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Dew Point and Comfort Levels
Elevated dew points, often exceeding 70F (21C) in December, contribute to a perception of increased mugginess. This can make strenuous outdoor activities feel more challenging, particularly for those unaccustomed to humid climates. Choosing breathable fabrics and staying hydrated becomes essential for maintaining comfort.
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Impact on Perceived Temperature
High humidity can make the air feel warmer than the actual temperature. This “feels-like” temperature, also known as the heat index, can influence decisions about clothing and activity levels. Visitors should consult weather forecasts that include both temperature and humidity readings for a more accurate understanding of outdoor conditions.
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Mold and Mildew Growth
Increased humidity can promote mold and mildew growth, particularly in enclosed spaces with limited ventilation. Travelers should be aware of this possibility when choosing accommodations and storing belongings. Using dehumidifiers or air conditioning can help mitigate this issue.
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Hair and Skin
High humidity can affect hair and skin. Hair may become frizzy or difficult to manage, while skin might feel stickier or more prone to breakouts. Packing appropriate hair products and skincare items can help address these concerns.
In summary, humidity plays a crucial role in shaping the December weather experience in Hawaii. Its impact on comfort levels, perceived temperature, and even personal care necessitates specific preparations. Understanding these effects allows visitors to pack and plan accordingly, mitigating potential discomforts and maximizing enjoyment of the Hawaiian islands during the wetter season.
4. Comfortable Ocean
Ocean conditions are integral to the overall December weather experience in Hawaii. Water temperatures, wave patterns, and visibility influence swimming, surfing, snorkeling, and other aquatic activities. Understanding these aspects allows for informed decisions regarding ocean-related pursuits during a December trip.
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Water Temperatures
Ocean temperatures in December typically remain comfortable for swimming, averaging in the mid-70s Fahrenheit (low 20s Celsius). This provides a pleasant contrast to cooler air temperatures, especially during periods of rain. While slightly cooler than summer months, the water remains warm enough for extended periods in the ocean without discomfort.
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Wave Heights and Surfing Conditions
December often brings larger waves to the north-facing shores of the islands, creating favorable conditions for experienced surfers. South-facing shores generally experience calmer waters, suitable for swimming and beginner surfing lessons. Checking surf reports becomes essential for assessing wave heights and choosing appropriate locations based on skill level.
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Visibility for Snorkeling and Diving
Water clarity can vary depending on location and recent rainfall. Heavier rains can reduce visibility, particularly near river mouths or areas with significant runoff. Choosing sheltered bays or leeward coasts often provides better visibility for snorkeling and diving.
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Ocean Currents and Safety
Ocean currents can be stronger in December, posing potential hazards for swimmers and other water enthusiasts. Heeding local advisories, swimming in designated areas, and being aware of potential rip currents are crucial safety precautions. Consulting lifeguards or local experts provides valuable insights into current conditions.
Considering ocean conditions alongside air temperature and rainfall provides a comprehensive understanding of December weather in Hawaii. This holistic perspective allows travelers to make informed decisions about water activities, maximizing enjoyment and ensuring safety throughout their trip.
5. Peak Whale Season
December in Hawaii coincides with peak humpback whale season, a phenomenon directly linked to weather patterns and oceanic conditions. Humpback whales migrate from Alaskan waters to the warmer, sheltered breeding grounds of Hawaii during the winter months. The calmer ocean waters and milder temperatures characteristic of Hawaii’s December weather provide an ideal environment for whale calving and mating. The relatively stable weather patterns also contribute to favorable ocean conditions for whale watching tours, enhancing visibility and reducing disruptions from rough seas. For example, the waters off Maui’s western coast often provide excellent whale watching opportunities during December due to the prevailing weather patterns. This convergence of whale migration and favorable weather makes December a prime time for observing these majestic creatures.
The influx of humpback whales during December adds a significant dimension to the Hawaiian experience. Whale watching tours operate frequently, offering opportunities for close encounters with these marine mammals. The calm ocean conditions and clear visibility typical of December further enhance the whale watching experience. The economic impact of whale watching tourism also underscores the significance of this seasonal phenomenon. Local economies benefit substantially from increased visitor spending associated with whale watching tours, accommodations, and related activities. This demonstrates the interconnectedness of weather patterns, whale migration, and economic activity in Hawaii.
In conclusion, peak whale season represents a compelling aspect of Hawaii’s December weather. The interplay of milder temperatures, calmer seas, and predictable weather patterns creates an optimal environment for both whales and whale watchers. Understanding this connection allows visitors to appreciate the unique natural spectacle of humpback whales while contributing to the local economy. This connection underscores the importance of considering ecological factors alongside traditional weather metrics for a comprehensive understanding of December conditions in Hawaii.
6. Variable Sunshine
Variable sunshine is a defining characteristic of December weather in Hawaii, directly influencing outdoor activities and overall visitor experience. While December marks the beginning of the wetter season, it doesn’t equate to constant cloud cover. Periods of bright sunshine interspersed with cloud cover and rain showers create a dynamic weather pattern. This variability necessitates flexibility in planning outdoor excursions. For example, a morning hike might begin under clear skies, transition to a brief rain shower, and conclude with brilliant sunshine illuminating a rainbow. Understanding this variability allows visitors to adapt itineraries, packing layers of clothing and incorporating both indoor and outdoor activities into their plans.
The interplay of sunshine and cloud cover influences temperature and perceived comfort levels. Periods of direct sunlight can increase temperatures significantly, even on relatively cool days. Conversely, cloud cover provides a welcome respite from the sun’s intensity, particularly during periods of higher humidity. This dynamic interplay requires attention to changing conditions throughout the day. Carrying sunscreen, sunglasses, and a light rain jacket allows visitors to adapt quickly to shifting weather patterns. For instance, beachgoers might experience alternating periods of sunbathing and seeking shade under passing clouds. This variability adds a unique dimension to the Hawaiian experience, requiring a degree of adaptability and preparedness.
In summary, variable sunshine is a crucial component of understanding December weather in Hawaii. It influences not only temperature and comfort but also the overall planning and execution of outdoor activities. Recognizing this characteristic and preparing for a range of conditions allows visitors to fully embrace the dynamic weather patterns and maximize their enjoyment of the islands’ diverse offerings, rain or shine.
7. Occasional Storms
December in Hawaii, while generally pleasant, experiences occasional storms impacting overall weather conditions. Understanding the nature and potential impact of these storms is crucial for trip planning and ensuring safety. These storms, though infrequent, can significantly disrupt travel plans and outdoor activities. Therefore, anticipating their possibility and understanding their characteristics contributes to a more informed and prepared approach to experiencing Hawaiian weather in December.
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Kona Lows
Kona lows, a type of low-pressure system, can bring significant rainfall, strong winds, and higher surf, particularly to leeward areas. These storms, though less frequent than trade wind showers, can disrupt air travel, create hazardous ocean conditions, and cause localized flooding. Preparing for the possibility of a Kona low involves monitoring weather forecasts, having flexible travel plans, and understanding potential safety precautions.
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Flash Flooding
Heavy rainfall associated with occasional storms can lead to flash flooding, especially in valleys and areas with poor drainage. Flash floods pose a significant safety risk, requiring vigilance and adherence to local advisories. Avoiding low-lying areas during periods of heavy rain and staying informed about potential flood warnings are essential precautions.
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High Surf and Strong Winds
Storms often generate high surf and strong winds, impacting coastal areas and maritime activities. Beach closures, disruptions to boat tours, and hazardous swimming conditions can occur. Checking surf reports, adhering to safety guidelines, and avoiding exposed coastal areas during periods of high surf and strong winds are recommended.
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Impact on Infrastructure
Occasional storms can sometimes disrupt infrastructure, including power outages and road closures. These disruptions, though typically short-lived, can impact travel plans and access to essential services. Having backup plans for communication, transportation, and accommodation minimizes potential inconvenience during such events.
In summary, while December in Hawaii generally offers pleasant weather, occasional storms introduce an element of unpredictability. Recognizing this possibility and understanding the potential impacts, ranging from flash flooding to infrastructure disruptions, allows for informed decision-making and enhanced safety. Integrating this awareness into travel plans contributes to a more comprehensive understanding of “how’s the weather in Hawaii in December” and facilitates a more prepared and enjoyable experience.
8. Shorter Daylight
Shorter daylight hours are a characteristic feature of December in Hawaii, directly impacting weather-related experiences. Reduced sunlight duration influences daily temperature fluctuations, affecting both air and ocean temperatures. As the sun’s energy input decreases, daytime high temperatures tend to be slightly lower compared to summer months. Similarly, ocean temperatures may exhibit subtle cooling trends. This reduced solar radiation also influences the rate of evaporation, indirectly impacting humidity levels and cloud formation. For example, reduced evaporation may contribute to slightly higher humidity during daylight hours compared to periods with longer sunshine duration. Recognizing the connection between shorter daylight and these nuanced weather variations allows for a deeper understanding of December’s climatic conditions.
The practical implications of shorter daylight hours extend beyond temperature and humidity. Fewer daylight hours necessitate adjustments to activity planning. Outdoor excursions, such as hiking, beach visits, and water sports, require careful consideration of available sunlight. Sunset occurs earlier, influencing dining schedules and evening activities. For instance, sunset hikes become less feasible, while stargazing opportunities increase. Furthermore, the psychological impact of reduced daylight hours can influence mood and energy levels. Adapting to this shift in daylight patterns through appropriate scheduling and activity choices enhances the overall December experience in Hawaii.
In summary, shorter daylight in December is an integral component of Hawaii’s overall weather profile. Its influence on temperature, humidity, and activity planning underscores the importance of understanding its connection to broader weather patterns. Recognizing these interconnected factors and adapting accordingly allows visitors to navigate December’s unique conditions and fully appreciate the nuanced weather dynamics of the Hawaiian islands during this time of year.
Frequently Asked Questions about Hawaiian Weather in December
This section addresses common inquiries regarding weather conditions in Hawaii during December, providing concise and informative responses to facilitate informed travel planning.
Question 1: Does it rain constantly in Hawaii during December?
Rainfall increases in December, marking the start of the wetter season. However, rain typically occurs in short bursts interspersed with periods of sunshine. Continuous, all-day rain is uncommon.
Question 2: What are typical daytime temperatures in December?
Daytime temperatures average in the mid-70s Fahrenheit (low 20s Celsius) at sea level, with cooler conditions at higher elevations. Ocean temperatures remain comfortable for swimming.
Question 3: Is December a good time to visit Hawaii for swimming and other water activities?
Ocean temperatures remain pleasant for swimming in December. However, increased wave activity on north-facing shores might favor experienced surfers. Calmer waters prevail on south-facing coasts.
Question 4: What should one pack for a trip to Hawaii in December?
Packing layers is recommended. Light clothing suitable for warm days, a light rain jacket, and a sweater for cooler evenings are advisable. Swimwear, sunscreen, and insect repellent are also essential.
Question 5: How does the weather in December affect whale watching opportunities?
December coincides with peak humpback whale season. The calmer waters and warmer temperatures characteristic of this period create ideal conditions for whale watching.
Question 6: Are there any specific weather-related safety concerns to consider in December?
Occasional storms can bring heavy rainfall and strong winds. Awareness of potential flash floods and high surf advisories is crucial. Staying informed about weather updates ensures safety.
Understanding these aspects of December weather in Hawaii allows for enhanced trip planning and a more enjoyable experience. Preparedness for variable conditions ensures a successful Hawaiian vacation.
For more detailed information on specific islands or regions, consult local weather forecasts and travel guides. This FAQ section serves as a general overview; localized conditions may vary.
Tips for Navigating Hawaiian Weather in December
Careful planning ensures a comfortable and enjoyable trip to Hawaii in December. These tips address key weather considerations, facilitating informed decision-making and enhancing visitor preparedness.
Tip 1: Pack for Variable Conditions: December weather fluctuates between sunshine, rain showers, and cooler evenings. Packing layers, including light clothing, rain gear, and a light sweater or jacket, accommodates these variations. A versatile wardrobe ensures comfort regardless of weather changes.
Tip 2: Monitor Weather Forecasts: Regularly checking local weather forecasts provides crucial insights into daily conditions, potential storms, and safety advisories. Staying informed allows for adjustments to itineraries and proactive planning for outdoor activities.
Tip 3: Choose Accommodation Wisely: Consider accommodations with amenities suited to December weather. Opting for locations with covered outdoor spaces or indoor common areas provides comfortable alternatives during rain showers. Access to laundry facilities helps manage damp clothing.
Tip 4: Plan Activities Strategically: Incorporate flexibility into activity planning. Having backup options for outdoor excursions ensures alternatives during inclement weather. Indoor activities, such as museum visits or cultural experiences, offer engaging alternatives to beach days or hikes.
Tip 5: Respect Ocean Conditions: Heed local advisories regarding ocean currents, wave heights, and potential hazards. Swimming in designated areas and consulting lifeguards enhances safety. Understanding ocean conditions allows for informed choices about water activities.
Tip 6: Prepare for Mosquitoes: Increased rainfall and humidity can lead to higher mosquito activity. Packing insect repellent and considering accommodations with mosquito nets or screens minimizes potential discomfort.
Tip 7: Embrace the Rain: Occasional rain showers are a natural part of the Hawaiian experience. Packing appropriate rain gear and embracing the refreshing showers enhances enjoyment of the islands’ lush landscapes and vibrant scenery.
Tip 8: Book Flights and Accommodation in Advance: December is a popular travel month. Securing flights and accommodations early ensures availability and potentially better rates. Advance booking facilitates smoother travel logistics.
Implementing these tips allows travelers to navigate December’s weather conditions effectively. Preparedness ensures comfort, safety, and an enjoyable experience exploring the diverse beauty of the Hawaiian Islands.
By understanding the nuances of December weather and employing these practical strategies, visitors can maximize their Hawaiian experience. These tips serve as a foundation for a memorable trip, regardless of weather variations.
How’s the Weather in Hawaii in December? – Conclusion
December weather in Hawaii presents a unique blend of tropical warmth and increased rainfall. Mild temperatures prevail, averaging in the mid-70s Fahrenheit, alongside higher humidity and more frequent rain showers. Ocean temperatures remain comfortable for swimming, coinciding with peak humpback whale season. Variable sunshine, occasional storms, and shorter daylight hours contribute further nuances to the overall weather profile. Understanding these interconnected factors allows for informed decision-making regarding packing, activity planning, and accommodation choices.
Successful navigation of December weather in Hawaii hinges on preparedness and adaptability. Packing layers, monitoring forecasts, and respecting ocean conditions contribute significantly to a safe and enjoyable experience. Embracing the dynamic nature of Hawaiian weather allows visitors to fully appreciate the islands’ beauty and unique characteristics during this special time of year. Further research into specific island climates and microclimates provides additional insights for tailoring travel plans to individual preferences and desired experiences. Ultimately, informed preparation empowers travelers to maximize their enjoyment of Hawaii’s diverse offerings, regardless of December’s weather variations.
