Average annual temperature is 23.4 °C
Absolute maximum temperature: 41.2 °C
Absolute minimum temperature: 11.6 °C
Number of sunny days: 119 days
Number of rainy days: 246 days
Look at detailed online map of Rio Douro
* Weather data for Rio Douro Brazil is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 35.0 | 36.4 | 35.3 | 32.7 | 30.6 | 29.5 | 33.3 | 35.2 | 38.0 | 38.1 | 41.2 | 37.2 |
| Average daytime temperature (°C) | 30.3 | 32.4 | 31.6 | 27.6 | 25.9 | 26.2 | 25.5 | 27.1 | 30.7 | 29.5 | 31.9 | 31.3 |
| Average temperature (°C) | 25.0 | 26.3 | 25.7 | 22.9 | 20.9 | 20.0 | 19.7 | 21.2 | 23.8 | 24.1 | 25.9 | 25.9 |
| Average night temperature (°C) | 21.1 | 22.5 | 21.5 | 19.1 | 16.8 | 15.4 | 15.6 | 16.8 | 18.6 | 20.7 | 21.4 | 21.4 |
| Absolute minimum temperature (°C) | 18.0 | 20.2 | 18.3 | 15.0 | 11.6 | 12.4 | 11.7 | 13.5 | 14.4 | 16.3 | 15.2 | 17.9 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 13.0 |
| Daylight mean duration (h) | 13.3 | 12.8 | 12.2 | 11.6 | 11.0 | 10.8 | 10.9 | 11.4 | 12.0 | 12.6 | 13.2 | 13.5 |
| Daylight minimum duration (h) | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 | 10.0 | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 |
| Sunshine mean duration (h) | 8.7 | 9.6 | 10.1 | 8.3 | 9.0 | 9.4 | 8.7 | 7.8 | 9.4 | 7.0 | 9.3 | 10.5 |
| Precipitation (mm) | 358 | 239 | 126 | 151 | 106 | 26 | 65 | 105 | 51 | 142 | 184 | 147 |
| Sunny days | 0 | 2 | 3 | 8 | 12 | 17 | 18 | 15 | 20 | 8 | 9 | 7 |
| Rainy days | 31 | 26 | 28 | 22 | 19 | 13 | 13 | 16 | 10 | 23 | 21 | 24 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Rio Douro is at