Average annual temperature is 15.8 °C
Absolute maximum temperature: 28.2 °C
Absolute minimum temperature: 1.8 °C
Number of sunny days: 188
Number of rainy days: 177
Number of snow days:
Average annual precipitation: 1734 mm
Look at detailed online map of Viana Do Castelo
* Weather data for Viana Do Castelo Portugal is based on climate observations for 2023 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 15.6 | 19.9 | 19.7 | 24.4 | 26.3 | 26.8 | 25.8 | 28.2 | 27.4 | 28 | 18.5 | 17 |
| Average daytime temperature (°C) | 13.4 | 15.1 | 15.6 | 18.5 | 21.2 | 22.6 | 21.4 | 22.6 | 21.6 | 21.2 | 16.7 | 14.2 |
| Average temperature (°C) | 10.6 | 10.4 | 13 | 15.1 | 17.5 | 19.5 | 18.9 | 19.9 | 19.1 | 18.7 | 14.7 | 11.9 |
| Average night temperature (°C) | 7.9 | 6.6 | 10.4 | 11.5 | 13.8 | 16.6 | 16.3 | 17.3 | 16.7 | 16.2 | 13 | 9.6 |
| Absolute minimum temperature (°C) | 2.1 | 1.8 | 2.3 | 7.6 | 10.9 | 14.5 | 14.2 | 15.1 | 13.2 | 11.8 | 8.4 | 5.4 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10 | 11.2 | 12.7 | 14 | 15 | 15.2 | 15.2 | 14.4 | 13.2 | 11.8 | 10.4 | 9.4 |
| Daylight mean duration (h) | 9.6 | 10.6 | 12 | 13.4 | 14.5 | 15.2 | 14.9 | 13.8 | 12.5 | 11.1 | 9.9 | 9.2 |
| Daylight minimum duration (h) | 9.2 | 10 | 11.2 | 12.7 | 14 | 15 | 14.5 | 13.2 | 11.8 | 10.4 | 9.4 | 9.2 |
| Sunshine mean duration (h) | 7 | 9.3 | 8.1 | 10 | 11.8 | 12.2 | 12.6 | 11.3 | 9.9 | 6.9 | 6.1 | 6.1 |
| Precipitation (mm) | 218 | 3 | 182 | 42 | 60 | 92 | 27 | 39 | 122 | 407 | 265 | 276 |
| Sunny days | 15 | 22 | 10 | 15 | 17 | 18 | 22 | 23 | 13 | 11 | 9 | 13 |
| Rainy days | 16 | 6 | 21 | 15 | 14 | 12 | 9 | 8 | 17 | 20 | 21 | 18 |
The best time to visit Viana Do Castelo during the most sunny months:
The largest precipitation sum in Viana Do Castelo is at