Average annual temperature is 27.1 °C
Absolute maximum temperature: 36.0 °C
Absolute minimum temperature: 19.6 °C
Number of sunny days: 144 days
Number of rainy days: 221 days
Look at detailed online map of Río San Román
* Weather data for Río San Román 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) | 33.2 | 34.5 | 33.3 | 34.2 | 34.8 | 33.6 | 35.7 | 34.3 | 33.9 | 32.5 | 33.7 | 36.0 |
| Average daytime temperature (°C) | 30.9 | 32.3 | 30.7 | 31.2 | 31.5 | 30.6 | 32.9 | 31.7 | 32.0 | 29.9 | 31.2 | 33.5 |
| Average temperature (°C) | 26.1 | 27.4 | 26.6 | 27.3 | 27.9 | 27.1 | 28.0 | 27.5 | 27.5 | 26.0 | 26.7 | 27.7 |
| Average night temperature (°C) | 22.3 | 23.5 | 23.3 | 23.9 | 24.6 | 24.1 | 24.6 | 24.3 | 23.9 | 23.1 | 23.4 | 23.1 |
| Absolute minimum temperature (°C) | 19.8 | 21.4 | 21.7 | 22.2 | 23.2 | 22.7 | 22.8 | 22.5 | 22.6 | 21.8 | 22.0 | 19.6 |
| 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 | 11.4 |
| 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 | 11.0 | 11.3 | 11.6 | 11.1 | 10.2 | 10.9 | 10.4 | 11.1 | 8.9 | 10.3 | 10.5 |
| Precipitation (mm) | 2 | 0 | 31 | 31 | 137 | 293 | 227 | 309 | 210 | 424 | 109 | 7 |
| Sunny days | 24 | 27 | 18 | 15 | 7 | 3 | 10 | 7 | 3 | 0 | 7 | 23 |
| Rainy days | 7 | 1 | 13 | 15 | 24 | 27 | 21 | 24 | 27 | 31 | 23 | 8 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Río San Román is at