Average annual temperature is 25.9 °C
Absolute maximum temperature: 38.4 °C
Absolute minimum temperature: 17.3 °C
Number of sunny days: 91 days
Number of rainy days: 274 days
Look at detailed online map of San Juan Nonualco
* Weather data for San Juan Nonualco 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) | 35.8 | 37.1 | 36.8 | 37.6 | 38.4 | 33.1 | 35.1 | 34.5 | 33.9 | 32.0 | 32.8 | 34.6 |
| Average daytime temperature (°C) | 32.5 | 34.7 | 33.1 | 33.7 | 33.3 | 30.4 | 32.1 | 30.7 | 31.2 | 28.9 | 30.3 | 32.3 |
| Average temperature (°C) | 25.4 | 26.8 | 26.1 | 26.9 | 27.1 | 25.6 | 26.3 | 25.7 | 25.8 | 24.4 | 24.8 | 25.8 |
| Average night temperature (°C) | 20.6 | 21.3 | 21.4 | 22.3 | 22.8 | 22.3 | 22.4 | 22.3 | 22.1 | 21.7 | 21.2 | 21.4 |
| Absolute minimum temperature (°C) | 17.3 | 19.4 | 19.7 | 20.6 | 20.9 | 21.3 | 21.0 | 21.3 | 21.1 | 20.5 | 17.9 | 18.6 |
| 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 | 12.8 | 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 | 11.2 | 9.9 | 10.8 | 10.2 | 10.9 | 8.6 | 9.9 | 10.4 |
| Precipitation (mm) | 9 | 1 | 54 | 53 | 123 | 360 | 249 | 279 | 177 | 356 | 209 | 13 |
| Sunny days | 20 | 25 | 9 | 9 | 4 | 0 | 3 | 1 | 1 | 0 | 5 | 14 |
| Rainy days | 11 | 3 | 22 | 21 | 27 | 30 | 28 | 30 | 29 | 31 | 25 | 17 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in San Juan Nonualco is at