Average annual temperature is 17.1 °C
Absolute maximum temperature: 27.7 °C
Absolute minimum temperature: 5.6 °C
Number of sunny days: 40 days
Number of rainy days: 325 days
Look at detailed online map of Río San Martín
* Weather data for Río San Martín 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 | 24.9 | 25.8 | 25.6 | 27.1 | 27.7 | 25.3 | 25.8 | 25.3 | 24.3 | 24.4 | 23.3 |
| Average daytime temperature (°C) | 22.0 | 23.0 | 23.4 | 24.2 | 24.6 | 24.0 | 23.2 | 23.0 | 23.1 | 22.3 | 22.7 | 21.4 |
| Average temperature (°C) | 15.2 | 16.1 | 16.5 | 17.5 | 18.5 | 18.7 | 17.6 | 17.6 | 17.4 | 17.1 | 17.1 | 15.4 |
| Average night temperature (°C) | 9.6 | 10.4 | 10.8 | 12.0 | 13.7 | 14.9 | 13.8 | 14.0 | 13.7 | 13.7 | 13.0 | 10.3 |
| Absolute minimum temperature (°C) | 7.6 | 8.2 | 8.5 | 10.9 | 12.1 | 12.8 | 12.3 | 12.4 | 12.4 | 11.1 | 10.3 | 5.6 |
| 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) | 11.2 | 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 | 10.6 | 11.1 | 11.5 | 11.3 | 10.6 | 9.5 | 9.5 | 9.8 | 8.8 | 10.0 | 9.8 |
| Precipitation (mm) | 12 | 18 | 32 | 64 | 132 | 171 | 331 | 401 | 252 | 355 | 81 | 21 |
| Sunny days | 8 | 4 | 6 | 8 | 3 | 0 | 0 | 0 | 0 | 0 | 1 | 10 |
| Rainy days | 23 | 24 | 25 | 22 | 28 | 30 | 31 | 31 | 30 | 31 | 29 | 21 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Río San Martín is at