Average annual temperature is 27.6 °C
Absolute maximum temperature: 36.0 °C
Absolute minimum temperature: 19.1 °C
Number of sunny days: 96 days
Number of rainy days: 269 days
Look at detailed online map of Departamento de Retalhuleu
* Weather data for Departamento de Retalhuleu Guatemala 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 | 32.4 | 32.7 | 33.4 | 34.4 | 34.2 | 34.8 | 35.4 | 36.0 | 33.5 | 33.6 | 35.2 |
| Average daytime temperature (°C) | 30.8 | 30.9 | 31.3 | 32.3 | 32.8 | 31.6 | 33.4 | 32.9 | 33.7 | 31.5 | 32.1 | 33.3 |
| Average temperature (°C) | 26.2 | 26.5 | 27.4 | 28.5 | 28.9 | 27.7 | 28.2 | 28.1 | 28.2 | 26.6 | 27.4 | 27.6 |
| Average night temperature (°C) | 21.7 | 21.8 | 23.6 | 24.5 | 25.1 | 24.6 | 24.3 | 24.3 | 24.2 | 23.5 | 23.4 | 22.4 |
| Absolute minimum temperature (°C) | 20.0 | 20.8 | 22.7 | 22.6 | 23.7 | 23.6 | 23.2 | 23.2 | 23.3 | 22.2 | 22.2 | 19.1 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 |
| Daylight mean duration (h) | 11.4 | 11.7 | 12.1 | 12.5 | 12.8 | 13.0 | 12.9 | 12.6 | 12.2 | 11.8 | 11.5 | 11.3 |
| 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 | 10.8 | 11.1 | 11.5 | 11.3 | 10.7 | 9.9 | 9.8 | 10.3 | 8.5 | 9.8 | 10.2 |
| Precipitation (mm) | 9 | 1 | 40 | 46 | 144 | 180 | 171 | 185 | 190 | 392 | 48 | 5 |
| Sunny days | 25 | 22 | 7 | 8 | 4 | 0 | 1 | 0 | 1 | 0 | 7 | 21 |
| Rainy days | 6 | 6 | 24 | 22 | 27 | 30 | 30 | 31 | 29 | 31 | 23 | 10 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Departamento de Retalhuleu is at