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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Canada Scope Weather Desk. Data from Environment and Climate Change Canada and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
San José, Costa Rica, has a tropical highland climate with mild temperatures year-round; looking at the live forecast above, you can expect daytime highs in the low-to-mid 20s Celsius, with a marked dry season from December through April.
What drives San José’s weather patterns?
San José sits in the Central Valley at roughly 1,170 metres elevation, which moderates the heat typical of Costa Rica’s coastal zones. The city experiences two main seasons: the dry season (December–April) and the green or rainy season (May–November). Afternoon showers are common during the wet months, but mornings often stay clear. Because of the altitude, overnight lows can dip to around 15°C, so a light jacket is useful year-round.
How do monthly averages help you plan?
If you are checking san josé costa rica weather by month, the driest and sunniest period runs from December through March. For those researching san josé costa rica weather december, expect warm, settled conditions with minimal rainfall. San josé costa rica weather january is similar, with daytime highs near 24°C and crisp evenings. Travellers who prefer a warmer feel can note that san jose costa rica weather in fahrenheit typically ranges from about 59°F at night to 75°F in the afternoon. For a full picture, san jose costa rica weather averages show that May and October are the wettest months, while February and March are the driest.
Is San José humid all year?
Humidity is relatively high during the rainy season (May–November), but the elevation keeps the air feeling fresher than at sea level. The dry season is noticeably less humid and more comfortable for outdoor activities.
Does San José ever get cold?
Nights and early mornings can feel cool, especially from December to February, with temperatures occasionally dropping to 14°C. A sweater or light jacket is recommended for evening outings, but snow never occurs.
What is the best month to visit for low rain?
February and March are the driest months, with very few rainy days and plenty of sunshine. December and January are also excellent choices, though they can have an occasional brief shower.
Sources
For other destinations, explore our Canada weather hub or check conditions in San Diego and Phoenix. If you are concerned about severe conditions, see our weather warning page.