Average annual temperature is 26.6 °C
Absolute maximum temperature: 38.5 °C
Absolute minimum temperature: 18.2 °C
Number of sunny days: 137 days
Number of rainy days: 228 days
Look at detailed online map of San Juan de Merino
* Weather data for San Juan de Merino 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 | 37.0 | 38.3 | 37.5 | 38.5 | 35.0 | 36.0 | 36.4 | 35.8 | 32.9 | 34.3 | 36.0 |
| Average daytime temperature (°C) | 33.7 | 35.0 | 34.6 | 35.1 | 34.4 | 31.6 | 33.3 | 32.9 | 32.8 | 30.5 | 31.6 | 34.1 |
| Average temperature (°C) | 26.2 | 27.1 | 26.7 | 27.5 | 27.7 | 26.0 | 27.1 | 26.7 | 26.5 | 25.1 | 25.7 | 27.3 |
| Average night temperature (°C) | 20.9 | 21.5 | 21.8 | 22.6 | 23.1 | 22.5 | 22.9 | 22.7 | 22.3 | 21.8 | 21.6 | 22.1 |
| Absolute minimum temperature (°C) | 18.2 | 20.2 | 20.4 | 21.2 | 21.6 | 21.2 | 21.2 | 21.3 | 21.5 | 20.7 | 18.9 | 18.5 |
| 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 | 12.8 | 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 | 10.8 | 11.3 | 11.5 | 11.1 | 9.6 | 10.6 | 10.3 | 10.7 | 9.1 | 9.9 | 10.3 |
| Precipitation (mm) | 3 | 0 | 25 | 43 | 84 | 228 | 164 | 221 | 105 | 204 | 146 | 4 |
| Sunny days | 22 | 28 | 15 | 14 | 9 | 1 | 7 | 5 | 3 | 1 | 13 | 19 |
| Rainy days | 9 | 0 | 16 | 16 | 22 | 29 | 24 | 26 | 27 | 30 | 17 | 12 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in San Juan de Merino is at