Average annual temperature is 24.2 °C
Absolute maximum temperature: 35.2 °C
Absolute minimum temperature: 16.7 °C
Number of sunny days: 68 days
Number of rainy days: 297 days
Look at detailed online map of Departamento de Usulután
* Weather data for Departamento de Usulután El Salvador is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 33.1 | 33.6 | 34.9 | 35.2 | 34.7 | 30.5 | 32.2 | 31.9 | 30.5 | 29.0 | 30.3 | 31.9 |
| Average daytime temperature (°C) | 29.6 | 32.1 | 30.5 | 31.0 | 30.0 | 28.3 | 29.8 | 28.5 | 28.7 | 26.7 | 27.8 | 30.1 |
| Average temperature (°C) | 23.4 | 25.0 | 24.2 | 24.9 | 25.0 | 23.9 | 24.9 | 24.2 | 24.3 | 22.8 | 23.6 | 24.3 |
| Average night temperature (°C) | 19.1 | 19.8 | 19.9 | 20.7 | 21.5 | 21.1 | 21.7 | 21.5 | 21.3 | 20.4 | 20.9 | 20.5 |
| Absolute minimum temperature (°C) | 16.7 | 18.0 | 18.3 | 19.7 | 20.1 | 20.1 | 20.2 | 20.0 | 20.2 | 19.3 | 19.0 | 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 | 12.4 | 12.7 | 12.9 | 12.8 | 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 | 10.9 | 11.3 | 11.5 | 11.2 | 9.6 | 10.8 | 10.3 | 11.0 | 8.7 | 10.1 | 10.5 |
| Precipitation (mm) | 25 | 1 | 54 | 90 | 161 | 254 | 253 | 328 | 209 | 431 | 172 | 27 |
| Sunny days | 13 | 22 | 6 | 8 | 3 | 1 | 1 | 1 | 0 | 0 | 2 | 11 |
| Rainy days | 18 | 6 | 25 | 22 | 28 | 29 | 30 | 30 | 30 | 31 | 28 | 20 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Departamento de Usulután is at