Average annual temperature is 21.6 °C
Absolute maximum temperature: 39.0 °C
Absolute minimum temperature: 7.5 °C
Number of sunny days: 244 days
Number of rainy days: 121 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) | 29.3 | 33.2 | 33.7 | 36.0 | 37.0 | 39.0 | 32.5 | 34.0 | 34.4 | 32.5 | 32.1 | 28.8 |
| Average daytime temperature (°C) | 27.1 | 28.6 | 31.4 | 33.2 | 33.8 | 35.5 | 30.0 | 30.2 | 30.7 | 28.5 | 28.9 | 25.1 |
| Average temperature (°C) | 17.8 | 19.1 | 20.6 | 22.6 | 24.0 | 25.0 | 23.1 | 23.0 | 23.6 | 21.6 | 21.1 | 17.9 |
| Average night temperature (°C) | 11.2 | 12.0 | 12.3 | 13.9 | 15.7 | 17.3 | 19.0 | 19.0 | 19.6 | 17.3 | 15.6 | 12.5 |
| Absolute minimum temperature (°C) | 8.9 | 10.3 | 10.5 | 12.0 | 13.1 | 13.6 | 17.5 | 16.7 | 17.6 | 14.6 | 9.2 | 7.5 |
| 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 | 10.0 |
| Daylight mean duration (h) | 11.0 | 11.4 | 12.0 | 12.6 | 13.1 | 13.4 | 13.3 | 12.8 | 12.3 | 11.7 | 11.1 | 10.9 |
| Daylight minimum duration (h) | 10.0 | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 10.0 | 10.5 | 11.2 | 11.7 | 11.6 | 12.0 | 10.5 | 9.7 | 9.8 | 9.2 | 9.7 | 8.2 |
| Precipitation (mm) | 4 | 0 | 0 | 0 | 2 | 11 | 115 | 120 | 53 | 108 | 7 | 9 |
| Sunny days | 29 | 28 | 31 | 30 | 30 | 27 | 1 | 3 | 7 | 12 | 23 | 23 |
| Rainy days | 2 | 0 | 0 | 0 | 1 | 3 | 30 | 28 | 23 | 19 | 7 | 8 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Guanacaste is at