Average annual temperature is 25.0 °C
Absolute maximum temperature: 36.5 °C
Absolute minimum temperature: 15.8 °C
Number of sunny days: 90 days
Number of rainy days: 275 days
Look at detailed online map of San Juan Loma Alta
* Weather data for San Juan Loma Alta 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) | 33.9 | 34.6 | 35.6 | 35.8 | 36.5 | 32.4 | 33.3 | 33.3 | 32.3 | 30.2 | 32.0 | 33.0 |
| Average daytime temperature (°C) | 31.2 | 33.2 | 32.0 | 32.4 | 31.7 | 29.5 | 31.1 | 30.2 | 30.2 | 28.0 | 28.9 | 31.3 |
| Average temperature (°C) | 24.2 | 25.6 | 25.2 | 25.8 | 25.9 | 24.5 | 25.6 | 25.2 | 25.0 | 23.7 | 24.3 | 24.9 |
| Average night temperature (°C) | 19.6 | 19.9 | 20.6 | 21.4 | 21.9 | 21.4 | 22.0 | 22.0 | 21.7 | 21.0 | 21.0 | 20.4 |
| Absolute minimum temperature (°C) | 15.8 | 18.4 | 19.1 | 20.0 | 20.7 | 20.6 | 20.6 | 20.3 | 20.3 | 19.6 | 19.6 | 15.9 |
| 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 | 12.8 | 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 | 11.1 | 9.5 | 10.8 | 10.4 | 10.9 | 8.8 | 10.1 | 10.5 |
| Precipitation (mm) | 19 | 0 | 47 | 79 | 167 | 258 | 158 | 283 | 198 | 402 | 156 | 18 |
| Sunny days | 18 | 25 | 8 | 12 | 4 | 1 | 2 | 2 | 1 | 0 | 3 | 14 |
| Rainy days | 13 | 3 | 23 | 18 | 27 | 29 | 29 | 29 | 29 | 31 | 27 | 17 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in San Juan Loma Alta is at