Climate averages 1991–2020
San José weather
in April.
A warm, wet month: the 2nd warmest and the 3rd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
April is a warm month in San José: daytime highs average 26.5°C and nights cool to about 18.1°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 102 mm of rain on roughly 18 days, which makes April a wet month (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 20 min on an average April day.
The nearest other city in this atlas is David (247 km away). In April its highs average 31.9°C, 5.4°C warmer than San José, with 173 mm of rain.
From April to May, average highs fall by 1.6°C to 25.0°C, and monthly rainfall rises from 102 mm to 357 mm.
The annual picture
April 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 | 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, selected | 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
April in nearby cities
- David in AprilPanama · 247 kmHigh 31.9°C · Low 23.1°C · 173 mm rain
- Granada, Nicaragua in AprilNicaragua · 302 kmHigh 32.1°C · Low 24.8°C · 20 mm rain
- Masaya in AprilNicaragua · 316 kmHigh 32.6°C · Low 23.7°C · 20 mm rain
- Managua in AprilNicaragua · 340 kmHigh 35.7°C · Low 24.9°C · 13 mm rain
- Matagalpa in AprilNicaragua · 388 kmHigh 30.8°C · Low 20.4°C · 35 mm rain
- León, Nicaragua in AprilNicaragua · 413 kmHigh 33.9°C · Low 25.6°C · 38 mm rain
- Estelí in AprilNicaragua · 430 kmHigh 31.5°C · Low 20.5°C · 36 mm rain
- Chinandega in AprilNicaragua · 447 kmHigh 33.8°C · Low 26.0°C · 36 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.