Average annual temperature is 14.9 °C
Absolute maximum temperature: 28.3 °C
Absolute minimum temperature: 1.8 °C
Number of sunny days: 121 days
Number of rainy days: 244 days
Look at detailed online map of Río San Juan
* Weather data for Río 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) | 23.3 | 26.4 | 27.0 | 28.3 | 26.4 | 26.3 | 23.1 | 23.5 | 23.9 | 23.3 | 23.5 | 21.7 |
| Average daytime temperature (°C) | 20.3 | 21.9 | 24.1 | 24.1 | 23.8 | 23.9 | 21.5 | 21.7 | 21.7 | 21.2 | 20.9 | 19.5 |
| Average temperature (°C) | 12.6 | 13.5 | 15.3 | 16.0 | 16.1 | 17.0 | 15.4 | 15.6 | 15.6 | 15.0 | 14.1 | 12.1 |
| Average night temperature (°C) | 7.0 | 7.5 | 8.9 | 10.1 | 10.7 | 11.9 | 11.2 | 11.4 | 11.2 | 11.0 | 9.6 | 7.3 |
| Absolute minimum temperature (°C) | 2.5 | 3.9 | 5.1 | 8.6 | 9.0 | 10.2 | 9.4 | 9.1 | 8.9 | 7.5 | 7.1 | 1.8 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 11.0 | 11.0 | 12.0 | 12.0 | 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) | 10.5 | 10.7 | 11.1 | 11.4 | 11.4 | 11.5 | 10.6 | 10.4 | 10.6 | 10.3 | 10.3 | 10.0 |
| Precipitation (mm) | 1 | 0 | 31 | 71 | 122 | 105 | 188 | 224 | 100 | 116 | 42 | 8 |
| Sunny days | 28 | 24 | 12 | 4 | 6 | 6 | 0 | 1 | 5 | 6 | 13 | 16 |
| Rainy days | 3 | 4 | 19 | 26 | 25 | 24 | 31 | 30 | 25 | 25 | 17 | 15 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Río San Juan is at