San Jose Weather by Month
Twelve months of San Jose, Costa Rica weather — averages from 2006–2025.
San Jose's warmest month is March (average high 26.6°C (79.9°F)) and the coolest is November (23.4°C (74.1°F)). The most rain falls in October (about 487 mm), and March is the driest (about 54 mm). March is the sunniest, with about 11.1 hours of sunshine a day.
Best months to visit San Jose
Ranked within San Jose's own year by temperature comfort, rainy days and sunshine — historical averages, not a forecast.
San Jose month by month
January
GoodHigh 24.6°C (76.3°F)
Low 16.3°C (61.3°F)
- Rainfall
- 75 mm (2.9 in)
- Rainy days
- 11 rainy days
- Sunshine
- 10.6 h sunshine / day
February
GreatHigh 25.8°C (78.4°F)
Low 16.3°C (61.3°F)
- Rainfall
- 55 mm (2.2 in)
- Rainy days
- 8 rainy days
- Sunshine
- 11 h sunshine / day
March
GoodHigh 26.6°C (79.9°F)
Low 16.7°C (62.1°F)
- Rainfall
- 54 mm (2.1 in)
- Rainy days
- 12 rainy days
- Sunshine
- 11.1 h sunshine / day
April
GoodHigh 26.4°C (79.5°F)
Low 17.4°C (63.3°F)
- Rainfall
- 116 mm (4.6 in)
- Rainy days
- 18 rainy days
- Sunshine
- 10.2 h sunshine / day
May
FairHigh 25.1°C (77.2°F)
Low 17.7°C (63.9°F)
- Rainfall
- 349 mm (13.7 in)
- Rainy days
- 27 rainy days
- Sunshine
- 8.5 h sunshine / day
June
FairHigh 24.3°C (75.7°F)
Low 17.7°C (63.9°F)
- Rainfall
- 383 mm (15.1 in)
- Rainy days
- 29 rainy days
- Sunshine
- 7.9 h sunshine / day
July
FairHigh 24.3°C (75.7°F)
Low 17.7°C (63.9°F)
- Rainfall
- 320 mm (12.6 in)
- Rainy days
- 26 rainy days
- Sunshine
- 7.9 h sunshine / day
August
FairHigh 24.4°C (75.9°F)
Low 17.4°C (63.3°F)
- Rainfall
- 387 mm (15.2 in)
- Rainy days
- 28 rainy days
- Sunshine
- 8.4 h sunshine / day
September
FairHigh 24.4°C (75.9°F)
Low 17.2°C (63°F)
- Rainfall
- 402 mm (15.8 in)
- Rainy days
- 29 rainy days
- Sunshine
- 8.1 h sunshine / day
October
FairHigh 23.8°C (74.8°F)
Low 17.1°C (62.8°F)
- Rainfall
- 487 mm (19.2 in)
- Rainy days
- 30 rainy days
- Sunshine
- 7.5 h sunshine / day
November
FairHigh 23.4°C (74.1°F)
Low 17.1°C (62.8°F)
- Rainfall
- 360 mm (14.2 in)
- Rainy days
- 26 rainy days
- Sunshine
- 7.6 h sunshine / day
December
GoodHigh 23.9°C (75°F)
Low 16.6°C (61.9°F)
- Rainfall
- 134 mm (5.3 in)
- Rainy days
- 16 rainy days
- Sunshine
- 9.6 h sunshine / day
Based on 20 years of historical weather data (2006–2025) from Open-Meteo. Monthly averages, not a forecast.