Costa Rica in April: Weather, Crowds & What to Expect

Guanacaste & Northwest Pacific (Liberia, Tamarindo, Nosara)

Humid air begins to creep in late April and short afternoon showers become more common as the year transitions; beaches like Playa Flamingo still see long dry windows though the first thunderstorms can arrive. This is a shoulder period for travelers seeking lower prices but be ready for sudden road mud if rain arrives. Carry a lightweight rain jacket and waterproof bag for electronics when exploring rivers or taking surf lessons.

Nicoya Peninsula & Northern Central Pacific (Santa Teresa, Montezuma, Nicoya)

Late April ends the dry season with humidity creeping in and occasional late afternoon storms as cloud buildups intensify over the hills around Montezuma. Travelers visiting waterfalls like Montezuma Falls may find them filling for the first time since winter; roads begin to show the first signs of seasonal washouts. Packing a light rain jacket and waterproof footwear is sensible if you plan inland hikes or remote beach days.

Central Pacific (Manuel Antonio, Jaco, Puntarenas)

Late April is a transitional month; humidity rises and the first claps of thunder can appear over the coastal hills, filling waterfalls and thickening the forest canopy. Boat tours that skirt the coast may run into afternoon squalls; mornings typically remain the most dependable time outdoors. Travelers should carry a light rain jacket and be prepared for sudden, brief heavy rainfall.

Southern Pacific & Osa Peninsula (Uvita, Dominical, Corcovado)

Late April edges toward the wet season with humidity increasing and a higher chance of brief but heavy showers that refresh the rainforest canopy and feeding pools for wildlife. Trails in Corcovado start to feel slipperier, and boat timings to coastal access points become more weather-dependent. Travelers should plan shorter hikes or guided, well-equipped treks and expect fewer visitors at camps and lodges.

Central Valley & Highlands (San José, Alajuela, Cartago, Poás, Arenal, Monteverde)

April sees hotter afternoons in the valley and a rising chance of late-month showers, particularly in the higher elevations where cloud forests begin to thicken. The looming green season means waterfalls start to swell and the countryside turns greener, but early-season storms can gust strongly at mountain passes like near Poás. Pack both sun protection and a compact rain jacket if you plan volcano or cloud-forest visits.

Caribbean Coast (Puerto Viejo, Cahuita, Tortuguero)

April is a wetter transition month on parts of the Caribbean coast with heavier, more frequent rains in some years; mornings can still be pleasant and useful for excursions to Cahuita National Park. The swell pattern changes for surfers and boat transfers may be more weather-dependent, but the low-key cultural scene and fewer crowds are draws. Pack waterproof gear, expect high humidity, and book accommodation close to attractions if you want to minimize travel on wet days.