Viana do Castelo weather in August 2025

The temperatures in Viana do Castelo in August are comfortable with low of 17°C and and high up to 24°C.

You can expect a few rainy days in Viana do Castelo during August, but usually the weather is comfortable in August.

Our weather forecast can give you a great sense of what weather to expect in Viana do Castelo in August 2025.

If you’re planning to visit Viana do Castelo in the near future, we highly recommend that you review the 14 day weather forecast for Viana do Castelo before you arrive.

Temperatures

24° / 17°

Rainy Days

Snowy Days

Dry Days

Rainfall

Sun Hours

3.2

Hrs

Explore the weather in Viana do Castelo in other months

Month	Temperatures	Rainy Days	Dry Days	Rainfall	Weather	More details
January	13° / 8°	9	22	77 mm	Bad	Viana do Castelo in January
February	14° / 8°	7	21	57 mm	Ok	Viana do Castelo in February
March	15° / 9°	8	23	59 mm	Ok	Viana do Castelo in March
April	17° / 10°	7	23	49 mm	Good	Viana do Castelo in April
May	19° / 12°	5	26	34 mm	Good	Viana do Castelo in May
June	21° / 15°	3	27	17 mm	Good	Viana do Castelo in June
July	23° / 16°	1	30	7 mm	Perfect	Viana do Castelo in July
August	24° / 17°	1	30	8 mm	Perfect	Viana do Castelo in August
September	23° / 16°	3	27	26 mm	Perfect	Viana do Castelo in September
October	20° / 14°	9	22	90 mm	Ok	Viana do Castelo in October
November	16° / 11°	10	20	79 mm	Ok	Viana do Castelo in November
December	14° / 9°	10	21	86 mm	Ok	Viana do Castelo in December

Temperatures in Viana do Castelo in August

Rain in Viana do Castelo in August

What is the average temperature in Viana do Castelo in August?

The average temperature in Viana do Castelo in August is 17/24° C.

What is the chance of rain in Viana do Castelo in August?

On average, there are 1 rainy days in Viana do Castelo during August.

Weather wise, is August a good time to visit Viana do Castelo?

The weather in Viana do Castelo in August is perfect.

Can it snow in Viana do Castelo in August?

On average, there are 0 snowy days in Viana do Castelo in August.

More about the weather in Viana do Castelo