May falls within Costa Rica’s “green season,” a period between the dry and heavy rainy seasons. This transitional month typically experiences a mix of sunshine and rainfall, offering lush landscapes and fewer crowds than the peak dry season. Afternoon showers are common, often followed by clear evenings. Temperatures remain warm, generally ranging from the mid-70s to the high 80s Fahrenheit (mid-20s to low 30s Celsius), varying by elevation and region.
Traveling to Costa Rica during this period presents unique advantages. The vibrant flora and fauna thrive with the increased rainfall, creating stunning scenery. Lower prices on accommodations and tours are often available compared to the dry season. Furthermore, the combination of sun and rain can provide a refreshing escape from hotter climates. Historically, May marks the start of the agricultural cycle, a time of renewal and growth important to Costa Rican culture.