Average annual temperature is 23.4 °C
Absolute maximum temperature: 35.2 °C
Absolute minimum temperature: 13.2 °C
Number of sunny days: 101 days
Number of rainy days: 264 days
Look at detailed online map of San Luis Ilopango
* Weather data for San Luis Ilopango Guatemala is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 32.2 | 32.5 | 33.7 | 34.4 | 35.2 | 32.7 | 33.2 | 32.6 | 32.0 | 30.8 | 31.6 | 33.2 |
| Average daytime temperature (°C) | 29.9 | 30.4 | 31.2 | 32.2 | 32.4 | 30.1 | 30.5 | 30.4 | 30.3 | 28.5 | 28.8 | 29.5 |
| Average temperature (°C) | 22.4 | 22.9 | 23.3 | 24.3 | 25.0 | 23.7 | 24.1 | 23.9 | 23.3 | 22.5 | 22.9 | 22.5 |
| Average night temperature (°C) | 17.1 | 17.5 | 18.2 | 19.0 | 20.0 | 20.0 | 19.8 | 19.5 | 19.0 | 18.9 | 18.3 | 17.4 |
| Absolute minimum temperature (°C) | 13.2 | 16.2 | 16.2 | 17.6 | 18.9 | 18.9 | 18.6 | 18.6 | 17.6 | 17.9 | 15.2 | 13.8 |
| 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 | 12.5 | 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) | 10.5 | 10.9 | 11.3 | 11.5 | 11.0 | 10.5 | 10.9 | 10.3 | 10.2 | 9.7 | 10.1 | 10.4 |
| Precipitation (mm) | 10 | 3 | 40 | 54 | 159 | 241 | 187 | 189 | 305 | 275 | 60 | 3 |
| Sunny days | 19 | 25 | 8 | 10 | 4 | 0 | 0 | 0 | 0 | 3 | 11 | 21 |
| Rainy days | 12 | 3 | 23 | 20 | 27 | 30 | 31 | 31 | 30 | 28 | 19 | 10 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in San Luis Ilopango is at