Average annual temperature is 22.3 °C
Absolute maximum temperature: 32.4 °C
Absolute minimum temperature: 11.6 °C
Number of sunny days: 86 days
Number of rainy days: 279 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) | 29.3 | 31.3 | 31.3 | 30.8 | 32.4 | 30.0 | 30.5 | 29.7 | 29.0 | 28.7 | 30.2 | 29.9 |
| Average daytime temperature (°C) | 27.1 | 28.6 | 28.2 | 29.3 | 29.8 | 28.0 | 27.7 | 27.7 | 27.3 | 27.0 | 27.6 | 27.4 |
| Average temperature (°C) | 20.8 | 21.5 | 22.0 | 23.1 | 24.0 | 23.5 | 22.9 | 22.6 | 22.1 | 22.1 | 22.3 | 20.9 |
| Average night temperature (°C) | 15.8 | 16.3 | 16.8 | 18.0 | 19.1 | 19.8 | 19.3 | 18.8 | 18.1 | 18.5 | 18.6 | 16.2 |
| Absolute minimum temperature (°C) | 13.3 | 14.2 | 14.6 | 16.0 | 16.4 | 17.8 | 17.8 | 17.8 | 16.7 | 14.4 | 15.8 | 11.6 |
| 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) | 10.4 | 10.7 | 11.0 | 11.3 | 11.1 | 10.4 | 9.6 | 9.9 | 10.4 | 9.7 | 10.1 | 10.1 |
| Precipitation (mm) | 15 | 12 | 41 | 48 | 83 | 197 | 392 | 425 | 320 | 252 | 61 | 8 |
| Sunny days | 21 | 18 | 8 | 9 | 3 | 0 | 0 | 0 | 0 | 1 | 7 | 19 |
| Rainy days | 10 | 10 | 23 | 21 | 28 | 30 | 31 | 31 | 30 | 30 | 23 | 12 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Río San Juan is at