Costa Rica does not have a traditional four-season calendar. Instead, the country alternates between a dry season (December to April) and a green season (May to November), with significant regional variation. The Pacific coast, the Central Valley, and the Caribbean coast each follow different rainfall patterns — which means the "best" time depends entirely on where you are going and what you want to do.
Dry season: December to April
The dry season is the most popular time to visit, particularly for travelers heading to the Pacific coast (Guanacaste, Manuel Antonio, Dominical, Osa Peninsula) and the Central Valley. Skies are reliably clear, roads are easier to navigate, and most outdoor activities run without interruption.
- December and January: peak season, high demand, book well in advance.
- February and March: excellent conditions across most of the country.
- April: the driest month in Guanacaste; vegetation turns golden-brown in the north.
- Semana Santa (Holy Week): Costa Rica's busiest domestic travel week — beaches fill up and prices rise sharply.
If you are visiting during December–January or Semana Santa, book transport and accommodation at least 2–3 months ahead. Demand for private transfers and shared shuttles is very high.
Green season: May to November
The green season — also called the rainy season — is misunderstood by many travelers. Rain typically falls in concentrated afternoon showers, leaving mornings clear and perfect for outdoor activities. Vegetation is lush, waterfalls are at their fullest, and prices are noticeably lower.
- May to July: transition into the rainy season; mornings are often sunny.
- August: a brief dry spell known as the "veranillo" (little summer) often occurs mid-month.
- September and October: the wettest months, especially on the Pacific side. Some roads in remote areas may be difficult. Whale watching peaks in September–October near Uvita.
- November: rainfall decreases; a good shoulder-season option.
September and October can bring heavy rain and occasional flooding in low-lying areas. If you plan to visit the Osa Peninsula or remote jungle destinations during this period, confirm road and trail conditions in advance.
The Caribbean coast: a different calendar
The Caribbean coast (Tortuguero, Puerto Viejo, Cahuita) follows an almost inverse pattern to the Pacific. It receives rain year-round, but the driest months are typically February–March and September–October — which are rainy months on the Pacific side. This makes the Caribbean an excellent option when the rest of the country is at its wettest.
Month-by-month summary
| Month | Pacific / Central Valley | Caribbean | Notes |
|---|---|---|---|
| December | Dry, sunny | Rainy | Peak season begins; book early |
| January | Dry, sunny | Rainy | Peak season; high demand |
| February | Dry, sunny | Drier | Excellent across the country |
| March | Dry, sunny | Drier | Best overall month |
| April | Dry (very hot in north) | Mixed | Semana Santa: very busy |
| May | Rains begin | Rainy | Green season starts; prices drop |
| June | Afternoon showers | Rainy | Lush landscapes; good value |
| July | Afternoon showers | Rainy | Veranillo possible mid-month |
| August | Mixed | Rainy | Veranillo (brief dry spell) |
| September | Wettest month | Drier | Whale watching peaks near Uvita |
| October | Very wet | Drier | Lowest prices; remote areas difficult |
| November | Improving | Rainy | Good shoulder-season option |
Best time by traveler type
Families with children
December to April offers the most predictable weather and the widest range of activities. If you are traveling during school holidays, book early — availability for private transport and popular experiences fills up fast.
Couples and honeymooners
February and March combine excellent weather with slightly lower demand than peak December–January. The green season (June–August) offers lush scenery, fewer crowds, and better value — ideal if you are flexible with dates.
Wildlife enthusiasts
Turtle nesting season runs from July to October on both coasts (species and exact timing vary by location). Whale watching near Uvita peaks in September–October and again in July–August. Birdwatching is excellent year-round, with the green season bringing migratory species. See our full wildlife watching guide for destination-by-destination details.
Surfers
The Pacific coast receives its best swells from May to November, coinciding with the green season. Tamarindo, Nosara, Santa Teresa, and Dominical all see consistent surf during this period.
Budget travelers
May, June, and October–November offer the best value. Accommodation and transport prices drop significantly, and popular sites are less crowded. The trade-off is less predictable weather, particularly in September–October.
Practical planning notes
- Costa Rica does not require a visa for most nationalities, but entry requirements can change. Check with your country's embassy or the Costa Rican immigration authority (DGME) before traveling.
- Travel insurance that covers trip interruption and medical evacuation is strongly recommended regardless of season.
- Road conditions in remote areas (Osa Peninsula, Sarapiquí, Tortuguero) can deteriorate significantly during heavy rain. Confirm access with your operator.
- The country observes several public holidays when services may be limited. Semana Santa (Holy Week) is the most significant.
Not sure which dates work best for your itinerary? Our team can help you plan around weather, availability, and your specific interests.
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