Things to Do in Costa Rica in May

Monteverde's cloud forest is one of those places that improves with rain. The mist that rolls through the canopy in May turns every branch into a hanging garden of epiphytes, moss, and dripping orchids, and the humidity draws out the resplendent quetzal, which nests here from March through June. You will hear the bird before you see it, a low resonant whistle that cuts through the steady drip of water off cecropia leaves. Morning walks before 8 AM tend to offer the clearest visibility through the canopy, and by the time clouds descend around midday you have already seen what the forest holds. The trails are muddier than in dry season, obviously. The tradeoff is walking in near-solitude through one of the most biologically dense forests on Earth. Green season mist is not an obstacle here. It is the whole point. The diffused light turns every photograph professional, and the sound of water moving through the canopy in a hundred small streams creates the kind of ambient texture that makes you stop walking just to listen. Stay still. The forest rewards patience.

The Rio Pacuare runs through a jungle canyon so steep and overgrown that the only way to see it is from the water, and May's early rains push the river to Class III-IV, the sweet spot where the rapids are exciting without the dangerous flood stage that comes later in September and October. The canyon walls rise roughly 300 m (984 ft) on either side, draped in primary rainforest where toucans and howler monkeys watch the rafts pass from the upper canopy. You will get soaked, that much is guaranteed. But the water temperature hovers warm enough that wetsuits are unnecessary, and the sensation of paddling through a curtain of waterfall spray at the midpoint of the run is something that stays with you. Most full-day trips launch from near Turrialba, about 2 hours east of San Jose, through a landscape of green coffee fields and dairy farms that smells like wet earth and wood smoke from roadside sodas. The Pacuare is consistently ranked among the top rafting rivers in the world. May catches it at its most photogenic, with every tributary waterfall running at full volume. The timing matters.

Manuel Antonio sits on Costa Rica's central Pacific coast where a strip of lowland rainforest meets crescent white-sand coves, and the wildlife density per square kilometer here is possibly the highest in the country. May mornings are the ideal window. The air is still cool enough to catch the salt off the beach mixed with the damp vegetal scent of the forest floor, and white-faced capuchins work through the canopy overhead while two-toed sloths hang motionless in cecropia trees. Three-toed sloths are harder to find, their algae-tinged fur blending into the branches so completely that a trained naturalist guide changes everything. By early afternoon the rain usually arrives. But by then you have had 4 to 5 hours of prime viewing. The park caps daily entries, which in May means you might have entire trail sections to yourself, something that would be unthinkable in February. The beaches inside the park, Cathedral Point, empty out enough in green season that you can hear the waves properly again, without the background noise of tour buses idling in the parking lot.

Here is the counterintuitive thing about Arenal's hot springs in May: rain makes them better. Sitting in mineral-rich water heated by the volcano's geothermal activity while warm rain falls on your shoulders and steam curls into the jungle canopy is, honestly, one of the best sensory experiences Costa Rica offers in any season. The springs range from around 32 degrees C (90 degrees F) to a near-scalding 50 degrees C (122 degrees F) depending on the pool, and the contrast between the hot water and the cooler rain on your face is the kind of detail no photograph captures. The volcano itself, at 1,633 m (5,358 ft), is often wrapped in cloud during May afternoons. But on clear mornings, usually before 9 AM, the cone emerges sharply against a sky that looks almost impossible against the green surrounding it. The town of La Fortuna at the volcano's base is the staging point, and the smell of gallo pinto, rice and black beans fried with Lizano salsa, drifts from every kitchen by 6 AM. Walk the hanging bridges in the morning while visibility is good, soak in the springs when the afternoon rain arrives, and you have a day that works with the weather instead of against it.

May marks the start of the south swell season on Costa Rica's Pacific coast, and Guanacaste's beach breaks come alive with consistent sets that the dry months rarely deliver. Playa Samara offers forgiving, crumbling waves good for beginners learning to read the water, while Playa Negra further north starts catching overhead sets that draw experienced surfers from San Jose for long weekends. Water temperature sits around 27 degrees C (81 degrees F), warm enough that a rash guard is all you need. Mornings deliver the cleanest conditions, with offshore winds holding the wave faces open before the onshore breeze picks up around 11 AM. The sand at Samara is a fine grey-tan that squeaks underfoot, and the tree line runs close enough to the water that you can retreat to shade between sets without losing sight of the break. Evening sessions have their own texture entirely, waves breaking in a steady rhythm against the calls of scarlet macaws roosting in the beachfront almond trees, the sky going copper and violet as the day's last light catches the spray. May is the sweet spot: the swells are here but the international surf crowd that packs Guanacaste in June and July has not arrived yet.

Tortuguero sits on Costa Rica's northern Caribbean coast, accessible only by boat or small aircraft, which is exactly why it feels like arriving somewhere the rest of the country forgot about. The network of canals and lagoons threading through the lowland rainforest draws comparisons to a Central American Amazon, and in May, rising water levels open up side channels that are inaccessible during drier months. Your boat glides past caimans basking on half-submerged logs, Jesus Christ lizards sprinting across the water surface in a blur of legs and spray, and green macaws perched in raffia palms overhead. The air smells like wet bark and river mud, and the only sounds between the guide's narration are the electric hum of insects and the occasional crack of a falling branch somewhere deep in the canopy. Leatherback sea turtles may still be nesting on Tortuguero's volcanic black-sand beach through late May, their massive tracks carved into the sand each morning like something prehistoric. The main green turtle nesting season begins in July. But even without turtles, the canals alone justify the trip, and the isolation, no roads, no car traffic, just water and forest, resets something in your head that you did not know needed resetting.