May is when the green season properly begins, and for a certain kind of traveller, it's the month Costa Rica becomes most itself. Waterfalls that trickled in April start to roar. The jungle shifts to a green that seems impossible. Fewer tourists on the trail means the paths to the good places are yours to walk without managing a crowd.
Highlights this month
- ✓Waterfalls transitioning from trickle to full flow — an extraordinary 2-3 week window
- ✓Leatherback turtle season on the Caribbean coast reaches late-season peak
- ✓Jungle and cloud forest foliage at maximum density
- ✓Significant drop in tourism — prices, availability, and pace all improve
Best for
Photography
May offers the rare combination of vivid green foliage and dramatic skies. Waterfalls in the 2-3 weeks after the first rains — before they reach full muddy flow — are at their most photogenic.
Worth knowing
May afternoons frequently bring heavy downpours in the Central Valley and Pacific slopes. Trails become muddy fast — waterproof boots and rain gear are essential, not optional.
Event note — Labor Day on May 1 is a public holiday — a day worth observing the slower rhythm of Costa Rican working culture.
Places that shine in May

🌊 Waterfalls
Catarata La Fortuna
A dramatic 70-metre waterfall, tropical rainforest, wildlife, and swimming
La Fortuna

🌊 Waterfalls
Cataratas de Montezuma
Three-tier waterfall at the end of a jungle trail twenty minutes from the village
Montezuma

🌊 Waterfalls
Cataratas Llanos de Cortez
The most accessible major waterfall in Costa Rica — and the most generous
Bagaces

💎 Hidden Gems
Río Celeste Azul
Impossibly blue river deep in Tenorio Volcano
Bijagua, Alajuela

🌊 Waterfalls
Cataratas Nauyaca
Two-tier 45-metre falls, three hours deep in the jungle south of Dominical
Dominical

🏕️ Camping
Estación Sirena, Corcovado
The most biologically intense place on Earth — no services, no shade, no compromise
Osa Peninsula
🦜 Wildlife
Canales de Tortuguero
Boat through rainforest canals watching caimans, sloths, and river otters
Tortuguero

🥾 Hiking
Savegre Valley Trail
Network of cloud-forest hiking trails around San Gerardo de Dota and the upper Río Savegre
San Gerardo de Dota

💎 Hidden Gems
Playa Biesanz
One of the calmest and most scenic beach
Quepos

🥾 Hiking
Sendero Valle del Silencio
A dawn hike into Costa Rica's most remote cloud forest — quetzal territory
Talamanca

💎 Hidden Gems
Bahía Drake
One of the wildest and most biodiverse destinations
Drake Bay

🦜 Wildlife
Savegre Valley
Cloud forest river valley at 2,200 metres — primary quetzal habitat, trout in the river
San Gerardo de Dota