Things to Do in Costa Rica in May
May weather, activities, events & insider tips
May Weather in Costa Rica
Is May Right for You?
Advantages
- May marks the sweet spot between dry and green season - you'll catch the last of the dry weather in Guanacaste while the Central Valley and Caribbean side start their lush transformation, giving you two seasons in one trip
- Wildlife viewing peaks as animals congregate around shrinking water sources - in Palo Verde National Park where you'll see hundreds of scarlet macaws and crocodiles in the Tempisque River
- Hotel rates drop 25-40% from peak season while most activities remain fully operational, making it arguably the best value month of the year
- Surf conditions are at their most consistent on both coasts - Pacific swells hit their stride while Caribbean breaks clean up before the heavy summer rains
Considerations
- Afternoon thunderstorms become increasingly common, typically rolling in around 2-3 PM and lasting 45-90 minutes, which can derail outdoor plans if you don't time activities right
- River tours and some remote lodges become inaccessible as water levels rise, in Tortuguero where boat access to certain canals gets restricted
- Mosquito populations explode after the first heavy rains, in lowland areas like Manuel Antonio and the Osa Peninsula
Best Activities in May
Early Morning Wildlife Tours
May's transition weather creates perfect wildlife conditions - animals are active before afternoon storms, and the pre-rain humidity brings out incredible biodiversity. The dry-season water sources have shrunk, concentrating wildlife around remaining rivers and watering holes. In Palo Verde, you'll witness the spectacular morning flyover of scarlet macaws returning to their roosts, while Monteverde's cloud forests become alive with resplendent quetzals feeding before the rains.
Pacific Surf Sessions
May delivers the year's most consistent surf conditions on the Pacific coast. The transition weather creates offshore winds in the morning (clean waves) followed by afternoon storms that help organize the swells. Dominical and Pavones see their most reliable waves, while Tamarindo's beach breaks work well for learners. The water temperature stays at a comfortable 28°C (82°F) without the dry-season crowds.
Coffee Farm Visitions
May kicks off the coffee flowering season in the Central Valley highlands. The air fills with the jasmine-like scent of coffee blossoms, and the moderate temperatures make walking through plantations pleasant. This is when farmers are pruning and preparing for the next harvest, so you'll see agricultural activity you won't catch during peak season. The views are clearest in the mornings before afternoon clouds build up.
Volcano Hiking
May's clear mornings offer the year's best volcano views before afternoon clouds obscure the peaks. Arenal's perfect volcanic cone is visible 80% of mornings, while Poás and Irazú's crater lakes show their surreal colors most reliably. The trails are less dusty than dry season but not yet muddy like the full green season. Early morning hikes reward you with steam vents at their most active and wildlife sightings at lower elevations.
Canopy Zip-lining
The pre-rain season creates ideal zip-lining conditions - warm temperatures without the oppressive humidity of full green season, plus clearer views through the canopy. Monteverde's cloud forest zip-lines cut through actual cloud layers in the morning, while Manual Antonio's coastal courses offer ocean views before afternoon haze sets in. The moderate winds enhance the flying sensation without making landings tricky.
May Events & Festivals
Fiestas de San Isidro Labrador
Costa Rica's most authentic agricultural celebration happens in San Isidro de Coronado, where farmers parade oxen-drawn carts through the streets and bless seeds and equipment. You'll witness traditional oxcart painting, folk dancing, and the blessing of animals at the local church. The festival includes agricultural fairs, traditional food stalls, and live music that starts at dawn and continues past midnight.
Essential Tips
What to Pack
Insider Knowledge
Avoid These Mistakes
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