Average annual temperature is 27.5 °C
Absolute maximum temperature: 37.8 °C
Absolute minimum temperature: 21.4 °C
Number of sunny days: 72 days
Number of rainy days: 293 days
Look at detailed online map of Guastomatal
* Weather data for Guastomatal 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) | 35.3 | 36.7 | 37.3 | 37.6 | 37.8 | 33.2 | 34.2 | 34.0 | 33.0 | 32.6 | 32.3 | 33.7 |
| Average daytime temperature (°C) | 32.0 | 35.2 | 34.0 | 35.8 | 34.9 | 30.7 | 31.7 | 31.3 | 31.9 | 30.1 | 30.3 | 31.8 |
| Average temperature (°C) | 26.7 | 28.6 | 28.0 | 29.3 | 29.0 | 26.9 | 27.3 | 27.0 | 27.1 | 26.1 | 26.3 | 27.5 |
| Average night temperature (°C) | 23.1 | 24.1 | 23.9 | 24.8 | 25.3 | 24.4 | 24.6 | 24.4 | 24.2 | 23.8 | 23.8 | 24.4 |
| Absolute minimum temperature (°C) | 21.4 | 22.7 | 22.6 | 23.7 | 24.3 | 23.4 | 23.4 | 22.7 | 22.7 | 22.9 | 22.9 | 23.4 |
| 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 | 12.6 | 12.4 | 12.2 | 11.9 | 11.7 | 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) | 10.6 | 11.1 | 10.6 | 11.2 | 9.9 | 8.4 | 9.0 | 8.7 | 9.1 | 7.3 | 8.6 | 10.3 |
| Precipitation (mm) | 52 | 1 | 102 | 29 | 128 | 392 | 348 | 384 | 233 | 594 | 363 | 32 |
| Sunny days | 11 | 23 | 9 | 8 | 4 | 1 | 1 | 0 | 0 | 0 | 1 | 14 |
| Rainy days | 20 | 5 | 22 | 22 | 27 | 29 | 30 | 31 | 30 | 31 | 29 | 17 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Guastomatal is at