Average annual temperature is 25.1 °C
Absolute maximum temperature: 36.4 °C
Absolute minimum temperature: 17.4 °C
Number of sunny days: 15 days
Number of rainy days: 350 days
Look at detailed online map of Provincia de Alajuela
* Weather data for Provincia de Alajuela Costa Rica is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 29.9 | 29.2 | 31.7 | 36.1 | 36.4 | 35.0 | 32.4 | 33.0 | 33.8 | 32.8 | 31.6 | 31.4 |
| Average daytime temperature (°C) | 27.5 | 27.7 | 29.6 | 31.5 | 33.1 | 31.2 | 29.7 | 30.5 | 31.2 | 29.7 | 28.9 | 28.2 |
| Average temperature (°C) | 23.3 | 23.4 | 24.3 | 25.6 | 27.0 | 26.0 | 25.4 | 25.6 | 25.9 | 25.2 | 24.7 | 24.4 |
| Average night temperature (°C) | 20.6 | 20.3 | 20.5 | 20.7 | 22.7 | 23.0 | 22.8 | 22.8 | 22.7 | 22.6 | 22.4 | 21.8 |
| Absolute minimum temperature (°C) | 17.8 | 17.4 | 18.0 | 18.8 | 20.5 | 21.2 | 20.9 | 21.4 | 21.4 | 21.5 | 20.1 | 19.7 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 |
| Daylight mean duration (h) | 11.6 | 11.8 | 12.1 | 12.4 | 12.6 | 12.7 | 12.7 | 12.5 | 12.2 | 11.9 | 11.6 | 11.5 |
| Daylight minimum duration (h) | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 |
| Sunshine mean duration (h) | 8.7 | 9.8 | 10.1 | 10.7 | 10.0 | 7.9 | 7.6 | 8.3 | 9.1 | 6.9 | 7.1 | 7.9 |
| Precipitation (mm) | 189 | 125 | 144 | 55 | 157 | 227 | 364 | 453 | 307 | 468 | 506 | 143 |
| Sunny days | 1 | 0 | 0 | 13 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Rainy days | 30 | 28 | 31 | 17 | 30 | 30 | 31 | 31 | 30 | 31 | 30 | 31 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Provincia de Alajuela is at