Average annual temperature is 26.3 °C
Absolute maximum temperature: 37.1 °C
Absolute minimum temperature: 16.7 °C
Number of sunny days: 71 days
Number of rainy days: 294 days
Look at detailed online map of Municipio de Retalhuleu
* Weather data for Municipio 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) | 34.3 | 35.3 | 35.7 | 36.5 | 37.1 | 32.7 | 34.1 | 34.6 | 33.8 | 32.5 | 32.5 | 33.8 |
| Average daytime temperature (°C) | 32.5 | 33.7 | 33.3 | 34.5 | 34.4 | 31.4 | 32.3 | 31.8 | 32.2 | 30.5 | 30.9 | 32.8 |
| Average temperature (°C) | 25.6 | 26.5 | 26.5 | 27.6 | 27.9 | 26.3 | 26.4 | 26.2 | 26.2 | 25.1 | 25.7 | 26.0 |
| Average night temperature (°C) | 20.6 | 21.3 | 22.3 | 22.9 | 23.8 | 23.2 | 22.3 | 22.4 | 22.3 | 22.1 | 21.8 | 20.5 |
| Absolute minimum temperature (°C) | 18.7 | 19.3 | 21.0 | 20.6 | 22.0 | 21.9 | 20.6 | 19.9 | 20.8 | 20.3 | 19.5 | 16.7 |
| 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) | 11.4 | 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) | 10.5 | 10.8 | 10.8 | 11.3 | 10.9 | 10.2 | 9.6 | 9.1 | 9.9 | 8.3 | 9.4 | 10.2 |
| Precipitation (mm) | 16 | 6 | 78 | 86 | 178 | 293 | 198 | 180 | 270 | 582 | 90 | 14 |
| Sunny days | 20 | 16 | 3 | 6 | 1 | 0 | 1 | 0 | 0 | 0 | 4 | 20 |
| Rainy days | 11 | 12 | 28 | 24 | 30 | 30 | 30 | 31 | 30 | 31 | 26 | 11 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Municipio de Retalhuleu is at