Average annual temperature is 17.4 °C
Absolute maximum temperature: 39.8 °C
Absolute minimum temperature: 0.0 °C
Number of sunny days: 192 days
Number of rainy days: 173 days
Look at detailed online map of 18 De Mayo
* Weather data for 18 De Mayo Uruguay is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 37.1 | 39.8 | 38.5 | 28.9 | 24.1 | 23.9 | 26.8 | 28.0 | 25.7 | 27.8 | 31.0 | 33.6 |
| Average daytime temperature (°C) | 31.2 | 29.9 | 29.3 | 22.3 | 19.4 | 15.9 | 15.9 | 17.0 | 17.4 | 21.6 | 24.1 | 26.0 |
| Average temperature (°C) | 24.9 | 23.9 | 24.2 | 17.2 | 15.1 | 11.7 | 11.7 | 11.9 | 13.0 | 15.7 | 18.6 | 21.1 |
| Average night temperature (°C) | 19.4 | 19.0 | 20.1 | 13.4 | 11.6 | 8.1 | 8.5 | 7.8 | 9.3 | 10.9 | 13.7 | 16.7 |
| Absolute minimum temperature (°C) | 14.9 | 11.3 | 11.8 | 9.4 | 3.8 | 1.0 | 0.9 | 0.0 | 0.9 | 3.8 | 7.9 | 11.7 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 |
| Daylight mean duration (h) | 14.2 | 13.3 | 12.3 | 11.2 | 10.3 | 9.9 | 10.1 | 10.9 | 11.9 | 13.0 | 13.9 | 14.4 |
| Daylight minimum duration (h) | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 |
| Sunshine mean duration (h) | 12.1 | 10.4 | 10.2 | 8.9 | 6.7 | 6.2 | 6.7 | 8.2 | 7.1 | 9.9 | 11.2 | 10.1 |
| Precipitation (mm) | 21 | 69 | 154 | 41 | 116 | 14 | 85 | 101 | 65 | 75 | 83 | 156 |
| Sunny days | 16 | 16 | 13 | 17 | 16 | 16 | 15 | 20 | 16 | 18 | 15 | 14 |
| Rainy days | 15 | 12 | 18 | 13 | 15 | 14 | 16 | 11 | 14 | 13 | 15 | 17 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit 18 De Mayo during the most sunny months:
The largest precipitation sum in 18 De Mayo is at