San José, Costa Rica weather in January
Temperature, rain and sunshine in January: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in January
Excellent
Best time to visit: January – March
What is the weather like in San José, Costa Rica in January?
In January, San José, Costa Rica is warm: daytime highs average 25 °C, and nights cool down to about 17 °C. Expect around 6 hours of sunshine a day. Rain falls on about 6 days, adding up to 28 mm. All in all, January is an excellent month for a holiday in San José, Costa Rica.
January compared
How the weather changes from December to February. Tap a month to open it.
| DecemberDec | JanuaryJan | FebruaryFeb | |
|---|---|---|---|
| Score | 70 | 85 | 90 |
| Day | 24° | 25° | 26° |
| Night | 17° | 17° | 17° |
| Sun | 5 h | 6 h | 6 h |
| Rain days | 12 | 6 | 5 |
More details for January
- Daylight
- 11 h 36 min05:57 – 17:33
- UV index
- 10 · very highclear sky, noon (estimate)All months
- Muggy days
- 1 daydew point 18 °C or moreAll months
- Wind
- 12 km/haverage daily peakAll months
- Cloud cover
- 47 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Time zone
- UTC−6America/Costa_Rica
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %47 %
- Few rainy daysweight 30 %86 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in January
- Sunscreen
- Sunglasses & sun hat
San José, Costa Rica in January: quick answers
Is San José, Costa Rica hot in January?
Warm rather than hot: in January, daytime highs in San José, Costa Rica average 25 °C and nights cool to about 17 °C.
Does it rain much in San José, Costa Rica in January?
Rain falls on about 6 days, adding up to 28 mm.
San José, Costa Rica month by month
The whole year in San José, Costa RicaAll destinations: Costa RicaWhere to go in January
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences