Average annual temperature is 20.5 °C
Absolute maximum temperature: 39.7 °C
Absolute minimum temperature: 3.3 °C
Number of sunny days: 248 days
Number of rainy days: 117 days
Look at detailed online map of Dieciocho de Mayo
* Weather data for Dieciocho de Mayo 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) | 29.2 | 32.3 | 32.8 | 35.2 | 36.4 | 39.7 | 34.6 | 35.2 | 35.2 | 33.0 | 32.0 | 27.5 |
| Average daytime temperature (°C) | 26.0 | 27.6 | 30.4 | 32.0 | 33.1 | 35.0 | 31.4 | 31.4 | 31.7 | 29.3 | 28.1 | 24.7 |
| Average temperature (°C) | 15.9 | 17.5 | 18.9 | 21.2 | 22.9 | 24.4 | 23.1 | 23.0 | 23.4 | 20.9 | 19.1 | 16.0 |
| Average night temperature (°C) | 7.7 | 9.2 | 9.2 | 11.6 | 13.9 | 16.2 | 18.2 | 17.7 | 18.7 | 15.5 | 12.7 | 9.5 |
| Absolute minimum temperature (°C) | 5.7 | 7.1 | 6.3 | 9.8 | 11.3 | 12.8 | 15.8 | 15.1 | 16.8 | 11.1 | 6.6 | 3.3 |
| 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 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 |
| Daylight mean duration (h) | 11.0 | 11.4 | 12.0 | 12.7 | 13.2 | 13.5 | 13.3 | 12.9 | 12.3 | 11.6 | 11.1 | 10.8 |
| Daylight minimum duration (h) | 10.0 | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 9.9 | 10.5 | 11.2 | 11.7 | 11.7 | 12.0 | 10.5 | 10.1 | 10.8 | 9.2 | 9.9 | 8.6 |
| Precipitation (mm) | 2 | 0 | 0 | 0 | 1 | 7 | 122 | 85 | 25 | 106 | 27 | 12 |
| Sunny days | 27 | 28 | 31 | 28 | 29 | 27 | 4 | 6 | 9 | 12 | 20 | 27 |
| Rainy days | 4 | 0 | 0 | 2 | 2 | 3 | 27 | 25 | 21 | 19 | 10 | 4 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Dieciocho de Mayo is at