Average annual temperature is 23.4 °C
Absolute maximum temperature: 36.6 °C
Absolute minimum temperature: 13.3 °C
Number of sunny days: 111 days
Number of rainy days: 254 days
Look at detailed online map of San Isidro Amatitlán
* Weather data for San Isidro Amatitlán Mexico is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 31.9 | 33.8 | 34.6 | 34.5 | 36.6 | 34.9 | 31.3 | 30.8 | 30.5 | 29.8 | 30.1 | 30.7 |
| Average daytime temperature (°C) | 30.0 | 31.4 | 32.2 | 33.1 | 33.9 | 30.8 | 29.0 | 28.9 | 28.6 | 27.8 | 28.4 | 28.8 |
| Average temperature (°C) | 22.5 | 23.3 | 24.2 | 24.9 | 26.0 | 24.5 | 23.0 | 22.9 | 22.8 | 22.4 | 22.6 | 21.8 |
| Average night temperature (°C) | 16.0 | 16.6 | 18.0 | 18.4 | 20.0 | 20.1 | 18.8 | 19.0 | 18.9 | 18.6 | 17.9 | 15.9 |
| Absolute minimum temperature (°C) | 14.3 | 13.9 | 16.5 | 16.7 | 17.2 | 18.6 | 17.6 | 17.7 | 17.8 | 16.3 | 15.5 | 13.3 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 13.0 | 13.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 |
| Daylight mean duration (h) | 11.2 | 11.6 | 12.0 | 12.5 | 12.9 | 13.1 | 13.0 | 12.7 | 12.2 | 11.8 | 11.3 | 11.1 |
| Daylight minimum duration (h) | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 |
| Sunshine mean duration (h) | 10.4 | 10.7 | 11.0 | 11.1 | 10.9 | 10.5 | 9.4 | 9.6 | 9.8 | 9.4 | 9.9 | 9.9 |
| Precipitation (mm) | 5 | 14 | 12 | 31 | 102 | 322 | 564 | 604 | 483 | 466 | 146 | 32 |
| Sunny days | 25 | 19 | 12 | 18 | 6 | 1 | 0 | 1 | 0 | 1 | 8 | 20 |
| Rainy days | 6 | 9 | 19 | 12 | 25 | 29 | 31 | 30 | 30 | 30 | 22 | 11 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in San Isidro Amatitlán is at