Year-round weather and climate in San José, Costa Rica
Average temperatures in San José run from an average low of 16°C61°F in January up to an average high of 27°C81°F in March. February is the driest month at 4 rainy days; September the wettest at 29. Here is the annual climate data, so you know what you are packing for.
Good to know
- Population
- 335K
- Currency
- CRC
- Language
- Spanish
- Time zone
- Costa Rica
Best time to visit
The most pleasant weather falls in January, February, and March, offering a perfect balance of comfortable temperatures and clear skies.
Rain character
Tropical Downpours: Expect intense bursts of rain during wetter months. Pack quick-drying footwear and a compact umbrella.
Day-to-night swing
Evening Chill: Temperatures drop by a noticeable 11°C20°F when the sun goes down. A light sweater or jacket is usually all you need for evening plans.
Seasonality Profile
Humid Subtropical: Sweltering, wet summers accompanied by mild, drier winters.
Evening vibe
Seasonal Terraces: During the more temperate months, the city opens up with lively outdoor terraces. For the rest of the year, expect to dine indoors.
Sightseeing stamina
All-Day Strolling: Weather is generally forgiving for long walking days. Comfortable sneakers are your most important packing item.
Average temperatures, sunshine, and rainfall
Average monthly weather in San José, based on recent historical data. Essential insights on temperature swings, expected rainfall, and daily sunshine.
Bars span the average daily low to high. Feb is typically driest at 4 days (13mm); Sep the wettest at 29 days (479mm).
| Month | Average high | Average low | Sunshine hours | Rainy days | Total rainfall |
|---|---|---|---|---|---|
| Jan | 25°C / 77°F | 16°C / 60°F | 11h | 6 | 29mm |
| Feb | 26°C / 79°F | 16°C / 60°F | 11h | 4 | 13mm |
| Mar | 27°C / 80°F | 16°C / 60°F | 11h | 9 | 45mm |
| Apr | 27°C / 80°F | 16°C / 62°F | 10h | 17 | 150mm |
| May | 26°C / 79°F | 17°C / 62°F | 9h | 25 | 335mm |
| Jun | 24°C / 76°F | 17°C / 62°F | 8h | 28 | 436mm |
| Jul | 25°C / 77°F | 17°C / 62°F | 9h | 25 | 358mm |
| Aug | 25°C / 77°F | 16°C / 62°F | 9h | 28 | 527mm |
| Sep | 25°C / 77°F | 16°C / 61°F | 8h | 29 | 479mm |
| Oct | 24°C / 76°F | 16°C / 61°F | 8h | 29 | 560mm |
| Nov | 24°C / 74°F | 16°C / 62°F | 8h | 26 | 416mm |
| Dec | 24°C / 76°F | 16°C / 61°F | 10h | 12 | 99mm |
Weather data by Open-Meteo.com (opens in a new tab)
Frequently Asked Questions
When is the sunniest time of year to visit San José?
The most sunshine in San José comes around February, averaging 11 hours a month. If you're heading there then, pack your sunglasses and sunscreen.
What clothes should I pack for San José?
Your packing list depends entirely on when you travel. Temperatures in San José swing from an average low of 16°C61°F in January up to 27°C81°F in March. The Packola app builds a tailored packing list for you based on the live weather forecast for your exact travel dates.
Do I need to pack an umbrella for San José?
San José gets rain on about 238 days out of the year. The wettest month is September. If you're traveling during the rainy season, you'll definitely want to pack an umbrella and a light rain jacket.
Pack smarter.
Averages get you close, but the week you travel is what matters. Get the live forecast, a smart packing list, and discover the best local spots and activities in San José with Packola.
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