Serene sunset over a tranquil Costa Rican beach with vibrant skies and gentle waves.
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Best Time to Visit Costa Rica: Dry Season vs. Green Season

ByJordan

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Costa Rica is a year-round destination, but it is not a one-climate country. Mountains, two coastlines and a web of microclimates mean the answer to “when should I go?” depends on where you are going — and what you are willing to trade for sunshine. Here is how the seasons actually work, with more in our Costa Rica guide.

The Two Seasons, Simply Put

Locals talk about two seasons rather than four. The dry season, often called summer, runs roughly from December to April on the Pacific side and in the Central Valley. The green season, sometimes called winter, runs roughly from May to November. Temperatures in the lowlands stay warm all year; it is rainfall that changes. Higher elevations, meanwhile, stay cooler throughout.

Dry Season (Roughly December to April)

This is peak travel season, and for good reason. The Pacific coast — especially the northwest province of Guanacaste — sees long stretches of sunshine, blue skies and easy beach days. Hiking trails are drier, roads are generally in better shape and outdoor plans are simpler to make.

  • Best for — beach time, reliable weather and first-time visitors who want fewer variables.
  • Keep in mind — it is the busiest period, especially around Christmas, New Year and Easter week, so book accommodation and rental cars early.
  • Landscape — parts of Guanacaste turn dry and golden by the end of the season.

Green Season (Roughly May to November)

Do not let the word “rainy” scare you off. In much of the country, green season days often start sunny, with clouds building into afternoon showers or downpours. Mornings are for adventures; afternoons are for hot springs, coffee and a good book.

The landscape is at its most lush, rivers run full and there are generally fewer crowds. Many travelers find it a rewarding time to visit. Rain tends to increase as the season goes on, with September and October typically the wettest months on the Pacific side, when some roads can be muddy and some businesses may close temporarily.

  • Best for — rainforests, waterfalls, wildlife and quieter trips.
  • Keep in mind — plan outdoor activities early in the day, and allow extra time for driving.

The Caribbean Side Plays by Different Rules

Costa Rica’s Caribbean coast — think Puerto Viejo, Cahuita and Tortuguero — does not follow the Pacific pattern. Rain can fall at any time of year, but September and October are often among the drier, sunnier months there, just when the Pacific side is at its wettest.

That makes the Caribbean a smart pivot if you are traveling in early autumn. It is also worth knowing that Tortuguero is famous for sea turtle nesting at certain times of year; if seeing turtles is a priority, research the nesting seasons and book with licensed local guides.

Microclimates and Mountains

Elevation changes everything. Cloud forest areas like Monteverde are cool, misty and breezy much of the year, and the Arenal area can see rain in any month. Meanwhile, the Central Valley around San José has a mild, spring-like climate. The south Pacific, including the Osa Peninsula, tends to be among the wettest regions overall. Pack layers wherever you go, and do not assume the weather in one region predicts the next.

Wildlife and Seasonal Highlights

Sloths, monkeys, toucans and frogs are around all year. Some experiences are seasonal, though — turtle nesting, whale watching along the Pacific and certain bird breeding periods cluster in specific months. If one of these is on your wish list, check timing for the exact region you plan to visit.

Choosing Your Dates

  • Sun-first beach trip — December to April on the Pacific side.
  • Lush landscapes and value — May to August, before the heaviest rains.
  • September or October — consider the Caribbean coast.
  • Holiday travel — book well ahead.

Whenever you go, bring a light rain jacket and a flexible attitude. Then map out your days with our five-day Costa Rica itinerary.

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