Climate averages 1991–2020
San José weather
in January.
A warm, wet month: the 5th warmest and the 4th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a warm month in San José: daytime highs average 24.6°C and nights cool to about 16.8°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 104 mm of rain on roughly 13 days, which makes January a wet month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 37 min on an average January day.
The nearest other city in this atlas is David (247 km away). In January its highs average 31.0°C, 6.4°C warmer than San José, with 51 mm of rain.
From January to February, average highs rise by 1.1°C to 25.7°C, and monthly rainfall falls from 104 mm to 69 mm.
The annual picture
January in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
San José climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 24.6°C16.8°C | 16.8°C | 104 | 13.3 | 11.612 h |
| February | 25.7°C16.9°C | 16.9°C | 69 | 11.9 | 11.812 h |
| March | 26.6°C17.4°C | 17.4°C | 65 | 13.9 | 12.112 h |
| April | 26.5°C18.1°C | 18.1°C | 102 | 18.0 | 12.312 h |
| May | 25.0°C18.6°C | 18.6°C | 357 | 27.8 | 12.613 h |
| June | 24.4°C18.6°C | 18.6°C | 385 | 28.8 | 12.713 h |
| July | 24.2°C18.3°C | 18.3°C | 293 | 28.2 | 12.613 h |
| August | 24.3°C18.2°C | 18.2°C | 345 | 28.5 | 12.412 h |
| September | 24.2°C18.1°C | 18.1°C | 391 | 29.1 | 12.212 h |
| October | 23.7°C18.1°C | 18.1°C | 430 | 30.1 | 11.912 h |
| November | 23.4°C17.9°C | 17.9°C | 312 | 25.5 | 11.712 h |
| December | 23.8°C17.3°C | 17.3°C | 169 | 17.8 | 11.612 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
January in nearby cities
- David in JanuaryPanama · 247 kmHigh 31.0°C · Low 21.9°C · 51 mm rain
- Granada, Nicaragua in JanuaryNicaragua · 302 kmHigh 29.6°C · Low 23.3°C · 3.4 mm rain
- Masaya in JanuaryNicaragua · 316 kmHigh 29.7°C · Low 22.1°C · 3.4 mm rain
- Managua in JanuaryNicaragua · 340 kmHigh 32.7°C · Low 23.2°C · 1.0 mm rain
- Matagalpa in JanuaryNicaragua · 388 kmHigh 26.6°C · Low 18.7°C · 8.6 mm rain
- León, Nicaragua in JanuaryNicaragua · 413 kmHigh 32.7°C · Low 24.0°C · 3.5 mm rain
- Estelí in JanuaryNicaragua · 430 kmHigh 27.7°C · Low 18.3°C · 3.1 mm rain
- Chinandega in JanuaryNicaragua · 447 kmHigh 32.4°C · Low 24.2°C · 1.9 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for San José) is explained once on the San José year overview and on the Sources, method and limits page.