Average annual temperature is 27.1 °C
Absolute maximum temperature: 38.6 °C
Absolute minimum temperature: 16.9 °C
Number of sunny days: 116 days
Number of rainy days: 249 days
Look at detailed online map of San Juan La Mesa
* Weather data for San Juan La Mesa 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) | 35.9 | 37.1 | 38.6 | 38.5 | 38.1 | 34.5 | 36.3 | 35.9 | 36.6 | 34.1 | 36.5 | 36.9 |
| Average daytime temperature (°C) | 34.1 | 35.4 | 35.5 | 36.5 | 34.9 | 32.2 | 33.8 | 33.7 | 34.0 | 32.0 | 32.6 | 34.5 |
| Average temperature (°C) | 26.4 | 27.3 | 27.3 | 28.4 | 28.2 | 26.3 | 27.2 | 27.3 | 27.1 | 25.9 | 26.3 | 27.2 |
| Average night temperature (°C) | 20.8 | 21.4 | 21.7 | 22.8 | 23.1 | 22.3 | 22.9 | 22.8 | 22.4 | 22.1 | 21.6 | 21.7 |
| Absolute minimum temperature (°C) | 16.9 | 19.7 | 19.9 | 21.3 | 21.6 | 20.8 | 21.7 | 21.5 | 21.3 | 21.2 | 17.4 | 17.5 |
| 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 | 12.9 | 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) | 10.4 | 10.8 | 11.2 | 11.3 | 11.0 | 10.3 | 10.8 | 10.4 | 10.5 | 9.4 | 9.9 | 10.4 |
| Precipitation (mm) | 8 | 0 | 31 | 57 | 179 | 299 | 218 | 184 | 234 | 280 | 119 | 4 |
| Sunny days | 21 | 25 | 16 | 14 | 8 | 0 | 1 | 0 | 1 | 2 | 9 | 19 |
| Rainy days | 10 | 3 | 15 | 16 | 23 | 30 | 30 | 31 | 29 | 29 | 21 | 12 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in San Juan La Mesa is at