Average annual temperature is 25.6 °C
Absolute maximum temperature: 47.0 °C
Absolute minimum temperature: 4.7 °C
Number of sunny days: 299 days
Number of rainy days: 66 days
Look at detailed online map of Santa Mercedes
* Weather data for Santa Mercedes 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) | 30.0 | 31.6 | 35.7 | 38.7 | 39.6 | 47.0 | 42.9 | 42.7 | 44.5 | 42.3 | 39.3 | 32.0 |
| Average daytime temperature (°C) | 25.1 | 26.3 | 30.4 | 34.4 | 35.8 | 40.5 | 40.5 | 39.7 | 40.6 | 36.2 | 31.8 | 28.6 |
| Average temperature (°C) | 16.1 | 17.2 | 21.2 | 24.2 | 26.5 | 31.5 | 33.7 | 32.5 | 32.5 | 28.3 | 23.9 | 19.4 |
| Average night temperature (°C) | 9.4 | 10.5 | 13.7 | 15.0 | 17.8 | 23.7 | 28.3 | 27.3 | 26.4 | 22.6 | 17.6 | 12.0 |
| Absolute minimum temperature (°C) | 4.7 | 6.9 | 8.4 | 10.5 | 13.3 | 17.1 | 25.5 | 23.9 | 23.2 | 17.1 | 12.9 | 8.9 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 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) | 10.6 | 11.2 | 12.0 | 12.8 | 13.5 | 13.9 | 13.7 | 13.1 | 12.3 | 11.5 | 10.8 | 10.4 |
| Daylight minimum duration (h) | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 9.1 | 9.6 | 10.4 | 11.9 | 12.1 | 12.6 | 12.0 | 11.2 | 11.5 | 9.8 | 9.2 | 9.1 |
| Precipitation (mm) | 4 | 5 | 1 | 0 | 0 | 0 | 26 | 51 | 10 | 23 | 1 | 0 |
| Sunny days | 29 | 22 | 29 | 30 | 30 | 29 | 15 | 15 | 21 | 23 | 26 | 30 |
| Rainy days | 2 | 6 | 2 | 0 | 1 | 1 | 16 | 16 | 9 | 8 | 4 | 1 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Santa Mercedes is at