Viana do Castelo Weather in October
What's the weather like in Viana do Castelo (Viana do Castelo) in October 2025?
The climate in Viana do Castelo during October can be summarized as mild and wet.
October is in the fall / autumn in Viana do Castelo and is typically the 5th warmest month of the year. Daytime maximum temperatures average around 20°C (67°F), whilst at night 11°C (52°F) is normal.
| Daytime temperature | 19.7°C 67.4°F |
|---|---|
| Nightly temperature | 11°C 51.7°F |
| Average temperature | 15.3°C 59.5°F |
| Daily sunshine | 6 hrs |
| Avg rainfall | 170 mm 6.7 ins |
| Rainy days | 15 days |
| Sea temperature | 17.5°C 63.6°F |
| Humidity | 79% |
| Windspeed | 14.8kph 9 mph |
On average October is the 5th wettest month of the year in Viana do Castelo with around 170mm 6.7 inches of rain making it a wet time to visit. This rainfall is typically spread over 15 days, although this may vary considerably.
On the flip side this corresponds to an average of 6 hours of sunshine per day.
October temperatures in Viana do Castelo
October rainfall
October hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Viana do Castelo in October 2025.
Other monthly averages
Best places to visit in October
Viana do Castelo weather stats
| Hottest month: | July | 24.1°C 75.4°F |
|---|---|---|
| Driest month: | August | 27mm 1.1ins |
| Sunniest month: | August | 10hrs |
| Coldest month: | January | 12.2°C 54°F |
| Wettest month: | January | 232mm 9.1ins |
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