December on Oahu, Hawai’i, typically marks the beginning of the “wet season.” This period offers a unique experience compared to the drier summer months. Visitors can expect increased rainfall, cooler temperatures, and larger waves on the north shore, making it a prime destination for surfing enthusiasts. Average daytime temperatures range from the mid-70s to low 80s Fahrenheit (low to mid-20s Celsius), while nighttime lows typically fall into the high 60s to low 70s Fahrenheit (high teens to low 20s Celsius). While rain showers are more frequent, they are often brief and localized, allowing for ample sunshine throughout the day.
Understanding the specific climatic conditions of this period is beneficial for travelers planning a visit. The increased rainfall contributes to the lush, vibrant landscapes characteristic of the island. While beach activities remain popular, visitors can also explore hiking trails, waterfalls, and other natural attractions enhanced by the wetter weather. Historically, this period held significance for the native Hawaiian population, marking a time for replenishment and preparation for the new year. The cooler temperatures and larger waves also provided different fishing and ocean-related opportunities.