Average annual temperature is 22.8 °C
Absolute maximum temperature: 38.2 °C
Absolute minimum temperature: 7.6 °C
Number of sunny days: 221 days
Number of rainy days: 144 days
Look at detailed online map of Guanacaste
* Weather data for Guanacaste Mexico is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 32.2 | 33.6 | 35.1 | 37.4 | 38.2 | 38.1 | 37.0 | 35.6 | 37.6 | 34.5 | 35.0 | 30.8 |
| Average daytime temperature (°C) | 28.9 | 31.0 | 32.5 | 34.5 | 35.6 | 35.5 | 32.5 | 32.5 | 33.4 | 29.9 | 31.2 | 27.4 |
| Average temperature (°C) | 18.4 | 20.5 | 21.8 | 23.7 | 25.2 | 26.1 | 24.6 | 24.3 | 24.5 | 22.6 | 22.1 | 19.2 |
| Average night temperature (°C) | 10.5 | 11.8 | 13.0 | 14.0 | 15.8 | 19.0 | 19.3 | 19.2 | 19.0 | 17.6 | 16.2 | 13.3 |
| Absolute minimum temperature (°C) | 7.6 | 10.0 | 10.1 | 11.2 | 11.9 | 15.2 | 17.9 | 18.1 | 17.5 | 13.8 | 8.7 | 9.1 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 11.0 |
| Daylight mean duration (h) | 11.1 | 11.5 | 12.0 | 12.6 | 13.1 | 13.3 | 13.2 | 12.8 | 12.3 | 11.7 | 11.2 | 11.0 |
| Daylight minimum duration (h) | 10.0 | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 11.0 | 10.0 |
| Sunshine mean duration (h) | 10.0 | 10.6 | 11.2 | 11.8 | 11.7 | 11.8 | 10.4 | 9.9 | 10.1 | 8.5 | 9.9 | 8.3 |
| Precipitation (mm) | 0 | 0 | 0 | 0 | 1 | 11 | 83 | 87 | 44 | 128 | 28 | 29 |
| Sunny days | 29 | 28 | 31 | 30 | 28 | 21 | 1 | 1 | 3 | 8 | 17 | 24 |
| Rainy days | 2 | 0 | 0 | 0 | 3 | 9 | 30 | 30 | 27 | 23 | 13 | 7 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Guanacaste is at