Best Time to Visit Costa Rica 2026: Month by Month

The best time to visit Costa Rica for most travellers is the dry season from mid-December to April, though the green season from May to November brings lower prices, fewer crowds and the Caribbean coast's own drier spell in September and October. Costa Rica is small, but its two coasts, central mountains and cloud forests run on different weather patterns, so the right month depends on which regions you plan to see. This guide covers dry versus green season, Costa Rica weather by month and the timing for each region, so you can pick dates that suit your route.

Last updated: October 2026

Best Time to Visit Costa Rica: The Short Answer

If you want the most reliable weather, go between mid-December and April, when the Pacific beaches, the Central Valley and most national parks are in their dry season. That reliability comes at a price: this is high season, with the year's highest lodging rates and the busiest beaches, especially over Christmas and Easter. If you can live with afternoon showers, the green season is the better-value option, with lush scenery and quieter trails. The one region that breaks the pattern is the Caribbean coast, which often has its calmest weather in September and October.

Dry Season vs Green Season: How Costa Rica's Climate Works

Why does a country this small have such different weather from one side to the other? The answer is the mountain spine running down the middle. The Pacific slope, which includes Guanacaste, the Central Pacific and the Osa Peninsula, follows a clear two-season pattern. Locals call the dry months verano (summer) and the wet months invierno (winter), even though temperatures stay warm all year at sea level. The Caribbean slope gets moisture from the trade winds for much of the year, so its rain is spread more evenly and it does not follow the Pacific calendar.

What the green season is really like

"Green season" is the tourism industry's name for the rainy months, and it is a fair description. In May, June and July, a typical day on the Pacific side often starts clear, with clouds building through the morning and rain arriving in the afternoon. Many travellers hike and swim early, then spend the afternoon somewhere covered. There is often a short drier spell around late June and July, known locally as the veranillo or "little summer", though its timing and strength vary from year to year.

September and October are a different story. On the Pacific side these are usually the wettest months, rain can last for whole days, and some lodges in remote areas such as the Osa Peninsula reduce services or close for part of this period. The UK government's FCDO travel advice for Costa Rica notes that June to November is the peak rainy season, when flooding and landslides can close roads, and that it overlaps with the Atlantic hurricane season. Conditions can change, so check your government's travel advisories before travelling.

When Costa Ricans travel

Domestic holidays shape availability as much as the weather does. Christmas to New Year is the most heavily booked stretch of the year, and beach towns fill with local families as well as international visitors. Easter week, Semana Santa, is another surge, and in 2027 it falls in late March. The mid-year school holidays, usually in early July, bring a smaller bump. Book these periods well ahead, or shift your dates just outside them.

Costa Rica Weather by Month

Here is how Costa Rica weather by month usually plays out for the regions most travellers visit. Rainfall varies year to year, and mountain areas like Monteverde make their own weather, so treat this as a planning guide rather than a forecast. Closer to departure, the national meteorological institute, IMN, publishes current forecasts and warnings.

The pattern is easy to remember once you see it: the Pacific side and the centre follow one calendar, and the Caribbean coast follows another. That is why the question "when to go to Costa Rica" usually comes back to "where". If you are comparing Costa Rica with its neighbours for a winter trip, our guide to places to visit in Central and South America in February puts it in regional context.

Region by Region: When to Go Where

Guanacaste and the Nicoya Peninsula

The northwest is the driest part of the country, and its dry season is long and dependable. Beach towns like Tamarindo, Nosara and Sámara are at their sunniest from December to April, though by March and April the dry forest turns brown and dusty. The early green season, in May and June, is a quieter time to visit, when the hills turn green again and the rain usually stays in the afternoon.

Central Pacific: Manuel Antonio and Jacó

Manuel Antonio National Park is compact and popular, so timing here is as much about crowds as rain. The dry season brings sunny beach days and busy trails, and arriving at opening time helps in any month. The green season is quieter, with wildlife still active, though September and October can be very wet.

Osa Peninsula and Corcovado

Skip the Osa Peninsula in October. It is one of the wettest parts of the country, trails and river crossings in Corcovado become harder going, and some remote lodges close for part of the peak rainy season. Plan this region for December to April, and book guided park entries early, since Corcovado access usually requires a certified guide. The Caribbean coast is the better October choice because it is often at its driest then.

Arenal and La Fortuna

Arenal sits where the Pacific and Caribbean weather systems meet, so showers are possible in any month and the volcano's summit is often hidden in cloud. The dry season improves your odds of clear views, but hot springs, hanging bridges and waterfall hikes work in the rain too, which makes La Fortuna a reliable green-season stop.

Monteverde cloud forest

Mist is part of the Monteverde experience whatever the month. The dry season brings strong winds, particularly from December to February, while the green season brings mud and rain. Pack a rain jacket and a warm layer, as evenings are noticeably cooler than on the coasts.

The Caribbean coast: Puerto Viejo, Cahuita and Tortuguero

The Caribbean side reverses the usual advice. September and October, the months to avoid on the Pacific, are often the calmest and sunniest stretch here, and February to March is another drier window. Rain is possible in any month, and November to January can be wet. Tortuguero is also defined by its wildlife calendar: green sea turtles typically nest there from about July to October.

The Central Valley and San José

Most trips start and end around San José and the international airport near Alajuela. The valley's elevation keeps temperatures mild all year, and green-season rain usually arrives in the afternoon, which makes it a pleasant base in any month.

Wildlife Timing and Matching the Season to Your Trip Length

For many visitors the wildlife calendar matters as much as the weather, and the two do not always line up. Humpback whales visit the waters around Marino Ballena National Park near Uvita in two separate seasons, roughly July to November and again from December to around April, as populations from each hemisphere arrive. Turtle nesting on the Caribbean coast peaks in the green season. Exact timing shifts from year to year, so confirm with local operators before you book around a sighting.

Our pick for a first trip

For a first trip combining Arenal, Monteverde and a Pacific beach, travel in late April or early May rather than over Christmas, because the dry-season weather usually holds on the Pacific side, the Easter rush is over and many lodges have moved to lower green-season rates. If your only window is September or October, build the trip around the Caribbean coast and Tortuguero instead of fighting the Pacific rain.

How season changes the route

• Mid-December to April: the classic loop of Arenal, Monteverde and Guanacaste or Manuel Antonio, with the Osa Peninsula if you have the days.
• May to August: the same loop works well, with early starts to beat afternoon rain and a good chance of a drier veranillo spell in July.
• September and October: San José, Arenal and the Caribbean coast, with Tortuguero for turtles. Leave Osa for another trip.
• November: a transition month. Guanacaste is drying out and quiet before the holiday rush.

Budget follows the same calendar, with dry-season and holiday weeks pushing rates up. For daily spend by travel style, see our guide to affordable travel in Central America and the Central American cost ranking. When you have a month and a trip length in mind, our free AI planner Meili takes your travel month, trip length, pace and priorities and returns a day-by-day plan you can adjust.

For safety context by region, read our Costa Rica safety guide, and our Central America safety comparison places it alongside its neighbours using Global Peace Index data. The official Costa Rica tourism site lists festivals and regional events. Planning a different country on the same principle? Our guide to the best time to visit Argentina uses the same region-first approach.

Staying Connected in Any Season

Your data needs barely change with the season, but where you travel affects how much you rely on them. Coverage is typically good in towns and along main routes, and it can thin out in remote areas such as Corcovado and parts of the Caribbean coast, so download offline maps before long drives. As a Latin America eSIM specialist, Latam Travellers keeps the Costa Rica range simple. Prices below are as of October 2026 and may move with exchange rates.

You can see the full range on our Costa Rica eSIM page. Our Costa Rica connectivity guide covers coverage in more detail, the iPhone setup guide walks through installation, and if Costa Rica is one stop on a longer route, the Central America eSIM guide compares the region country by country.

Frequently Asked Questions

Is the green season a good time to visit Costa Rica?

Yes, especially from May to August. Rain usually falls in the afternoon, mornings are often clear, the scenery is at its most lush and many lodges charge lower rates than in the dry season. September and October are much wetter on the Pacific side, so shift towards the Caribbean coast if you travel then.

Is December a good time to visit Costa Rica?

Yes, from mid-December onwards. The dry season usually settles in on the Pacific side and in the Central Valley around the middle of the month. The week from Christmas to New Year is the most heavily booked of the year, so reserve lodging and car hire early.

Is the Caribbean coast drier when the Pacific is wet?

Often, yes. Puerto Viejo, Cahuita and Tortuguero frequently see their calmest weather in September and October, with February to March as another drier window. Rain is possible on the Caribbean side in any month, so pack for showers regardless.

Can you see whales in Costa Rica in both seasons?

Yes. Humpback whales visit the waters near Uvita and Marino Ballena National Park roughly from July to November and again from December to around April. Timing varies from year to year, so check with local operators before you book.

Do I need an eSIM for travelling around Costa Rica?

No, but most travellers find it easier. An eSIM gives you data for maps, ride apps and bookings from the moment you land, without hunting for a local SIM. Coverage may vary in remote areas, so download offline maps before heading to Corcovado or the Caribbean coast.

Pick the regions first, then let them choose your month. At Latam Travellers we focus exclusively on Latin America, and the Costa Rica trips that work best are the ones where the coast and the calendar were decided together, not the ones that tried to see the Osa Peninsula in October.