Average annual temperature is 18.7 °C
Absolute maximum temperature: 31.7 °C
Absolute minimum temperature: 7.8 °C
Number of sunny days: 43 days
Number of rainy days: 322 days
Look at detailed online map of San Juan
* Weather data for San Juan 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) | 25.9 | 26.9 | 28.1 | 31.7 | 29.2 | 30.3 | 24.5 | 27.0 | 24.9 | 28.2 | 26.8 | 25.4 |
| Average daytime temperature (°C) | 20.5 | 20.4 | 23.4 | 25.7 | 26.2 | 27.1 | 23.0 | 23.9 | 23.9 | 23.0 | 20.9 | 19.3 |
| Average temperature (°C) | 16.2 | 16.2 | 18.2 | 19.8 | 20.5 | 21.7 | 19.3 | 19.5 | 19.5 | 19.1 | 17.8 | 16.0 |
| Average night temperature (°C) | 13.3 | 13.6 | 14.7 | 15.3 | 16.1 | 17.4 | 17.0 | 16.7 | 16.6 | 16.7 | 16.0 | 13.7 |
| Absolute minimum temperature (°C) | 7.8 | 11.1 | 12.6 | 12.7 | 14.4 | 15.4 | 14.2 | 15.3 | 15.5 | 13.1 | 13.8 | 8.2 |
| 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) | 11.3 | 11.6 | 12.0 | 12.5 | 12.9 | 13.1 | 13.0 | 12.7 | 12.2 | 11.8 | 11.4 | 11.2 |
| 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) | 9.5 | 9.5 | 10.4 | 11.5 | 11.2 | 11.3 | 9.5 | 10.1 | 10.4 | 8.9 | 7.8 | 7.7 |
| Precipitation (mm) | 89 | 136 | 90 | 21 | 53 | 113 | 231 | 173 | 87 | 168 | 277 | 168 |
| Sunny days | 5 | 1 | 6 | 9 | 7 | 6 | 0 | 1 | 1 | 0 | 2 | 5 |
| Rainy days | 26 | 27 | 25 | 21 | 24 | 24 | 31 | 30 | 29 | 31 | 28 | 26 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in San Juan is at