Average annual temperature is 24.7 °C
Absolute maximum temperature: 43.2 °C
Absolute minimum temperature: 6.5 °C
Number of sunny days: 274 days
Number of rainy days: 91 days
Look at detailed online map of 18 de Diciembre
* Weather data for 18 de Diciembre 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) | 33.7 | 30.2 | 34.3 | 37.0 | 40.5 | 43.2 | 39.2 | 40.2 | 40.1 | 38.3 | 35.9 | 34.2 |
| Average daytime temperature (°C) | 28.0 | 26.2 | 29.6 | 32.4 | 34.5 | 35.6 | 35.9 | 36.6 | 36.8 | 33.2 | 31.6 | 30.2 |
| Average temperature (°C) | 18.3 | 17.3 | 20.1 | 23.3 | 25.9 | 28.6 | 30.3 | 30.6 | 30.4 | 27.1 | 23.8 | 20.7 |
| Average night temperature (°C) | 11.0 | 10.4 | 11.8 | 14.9 | 18.2 | 22.5 | 25.9 | 25.9 | 25.8 | 22.9 | 17.8 | 13.4 |
| Absolute minimum temperature (°C) | 6.7 | 6.5 | 7.3 | 9.2 | 14.2 | 17.7 | 23.9 | 23.9 | 23.6 | 17.0 | 12.7 | 9.3 |
| 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) | 10.8 | 11.3 | 12.0 | 12.8 | 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) | 9.4 | 9.1 | 10.6 | 11.5 | 11.5 | 12.4 | 11.7 | 10.8 | 11.2 | 8.8 | 9.2 | 9.2 |
| Precipitation (mm) | 5 | 27 | 1 | 0 | 0 | 1 | 121 | 69 | 67 | 230 | 11 | 0 |
| Sunny days | 29 | 23 | 30 | 30 | 27 | 29 | 8 | 10 | 12 | 18 | 28 | 30 |
| Rainy days | 2 | 5 | 1 | 0 | 4 | 1 | 23 | 21 | 18 | 13 | 2 | 1 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in 18 de Diciembre is at