When to visit Costa Rica - Month by Month weather

Costa Rica’s densely verdant terrain and sweeping rainforest owe much to its tropical climate. Generally, the country experiences its peak dry season from December to April, with May to November heralding the rainy or ‘green’ season. Rainfall can occur year round, although showers during the dry season tend to be short lived.

December to April is peak visitor season: beaches and national parks are busy, and accommodation is in high demand. Most of the country enjoys plenty of sun and high temperatures, with minimal rainfall. The Caribbean Coast is usually at its driest during March. Wildlife viewing is generally excellent, including whale watching at Uvita from December to March.

May to August: The green season begins, bringing frequent showers to most regions. National parks see a slowdown in visitors, allowing crowd-free wildlife viewing, and surfing conditions can be good on key beaches. May and June can be good months to visit Arenal, when good visibility permits great views of the volcano. There are sunny periods in the Central Valley areas of San Jose and Manual Antonio National Park, and on the Caribbean Coast, where green sea turtle nesting along Tortuguero’s coastline is at its peak during July and August. July heralds the start of whale watching season at Uvita on the Southern Pacific Coast. The Northern Pacific coastline, including the Nicoya Peninsula, receives less rainfall year-round than the country as a whole, and often basks in sunny spells during July and August.

September to November: The height of the rainy season, with prolonged heavy rain showers and storms sweeping most of the country, and resultant sea swells bringing great surfing conditions along the Pacific Coast. Tourist accommodation may be closed, and roads in rural areas can be off limits, due to flooding. The Caribbean Coast, hot and humid for most of year, is usually at its driest during September and October, coinciding with the end of turtle nesting season. The Uvita whale watching season reaches its peak during October. In November the rains begin to abate, allowing low-season uninterrupted wildlife watching for nature lovers who don’t mind the odd shower. By the end of the month, visitor numbers are on the increase again.

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