Viana do Castelo Weather in September

What's the weather like in Viana do Castelo (Viana do Castelo) in September 2024?

The climate in Viana do Castelo during September can be summarized as warm and a little damp.

September is in the fall / autumn in Viana do Castelo and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around 23°C (73°F), whilst at night 13°C (56°F) is normal.

Viana do Castelo weather averages (imperial / metric)
Daytime temperature 23°C 73.4°F
Nightly temperature 13.4°C 56.1°F
Average temperature 18.2°C 64.8°F
Daily sunshine 7.8 hrs
Avg rainfall 89 mm 3.5 ins
Rainy days 10 days
Sea temperature 18.5°C 65.3°F
Humidity 75%
Windspeed 13.7kph 9 mph

On average September is the 4th driest month of the year in Viana do Castelo with around 89mm 3.5 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 10 days, although this may vary considerably.

On the flip side this corresponds to an average of 7.8 hours of sunshine per day.

September temperatures in Viana do Castelo

Viana do Castelo average temperature in September

September rainfall

Viana do Castelo average rain in September

September hourly sunshine

Viana do Castelo average rain in September

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 September 2024.

Other monthly averages

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Viana do Castelo weather stats

Viana do Castelo weather statistics
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
Map showing location of Viana do Castelo (41.69323, -8.83287) Viana do Castelo map pin © Google

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