Average annual temperature is 23.5 °C
Absolute maximum temperature: 42.5 °C
Absolute minimum temperature: 0.5 °C
Number of sunny days: 234 days
Number of rainy days: 131 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) | 30.7 | 38.4 | 41.2 | 34.9 | 36.5 | 42.5 | 41.2 | 41.7 | 40.6 | 36.5 | 31.1 | 29.3 |
| Average daytime temperature (°C) | 25.3 | 26.9 | 31.2 | 28.4 | 31.0 | 37.0 | 38.5 | 38.6 | 36.9 | 29.3 | 22.8 | 21.8 |
| Average temperature (°C) | 17.8 | 18.0 | 22.2 | 21.9 | 24.5 | 29.5 | 30.9 | 30.7 | 29.4 | 23.1 | 17.3 | 15.9 |
| Average night temperature (°C) | 11.8 | 11.7 | 15.9 | 16.9 | 19.4 | 22.4 | 23.9 | 23.7 | 22.5 | 18.5 | 13.2 | 11.5 |
| Absolute minimum temperature (°C) | 5.3 | 0.5 | 5.6 | 10.0 | 16.3 | 17.7 | 22.6 | 20.9 | 19.2 | 7.5 | 6.3 | 4.8 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 11.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 |
| Daylight mean duration (h) | 10.8 | 11.3 | 12.0 | 12.7 | 13.4 | 13.7 | 13.5 | 13.0 | 12.3 | 11.6 | 10.9 | 10.6 |
| Daylight minimum duration (h) | 10.0 | 11.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 8.7 | 9.8 | 9.1 | 8.9 | 10.2 | 12.3 | 12.5 | 11.6 | 11.1 | 8.6 | 6.3 | 6.8 |
| Precipitation (mm) | 2 | 1 | 37 | 51 | 139 | 22 | 23 | 33 | 56 | 72 | 76 | 10 |
| Sunny days | 25 | 24 | 20 | 12 | 8 | 22 | 20 | 18 | 25 | 18 | 18 | 24 |
| Rainy days | 6 | 4 | 11 | 18 | 23 | 8 | 11 | 13 | 5 | 13 | 12 | 7 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit San Juan during the most sunny months:
The largest precipitation sum in San Juan is at