Viana do Castelo weather in August (Norte Region, Portugal)

Thinking of visiting Viana do Castelo in August? Check the weather first! Our guide gives you the essential weather details for this month.

Temperatures

Experience perfect weather in Viana do Castelo during August, featuring high temperatures and moderate rainfall. August marks the summer season. Expect daytime highs to reach approximately 24°C, with nighttime lows dipping to around 16°C. On average, it is the month with the highest temperature of the year.

Precipitation

Viana do Castelo in August usually receives moderate rainfall, averaging around 41 mm for the month. According to historical climate patterns, there are usually around 7 days days of rain.

Average sunshine

The city usually sees around 295 hours of sunlight, indicating many sunny days.

If you're a fan of comfortable temperatures and drier conditions, August is a great time to visit. June, July, August and September generally stand out with the best circumstances. While January, November and December tend to showcase less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Viana do Castelo climate page with graphs.

 

Viana do Castelo, monthly averages in August

Min Temperature 16°C  

Max Temperature 24°C  

Chance of Rain 22%  

Precipitation 41 mm  

Rainy days 7 days  

Humidity 73% *  

Sunshine 295 hours *  

Percentage Sunshine 73% *  

Data from: Porto, Portugal (52 KM, 32 Miles).

Where to go in Portugal in August

Find out more about the weather in Portugal and which places have the best travel conditions in this month.

Weather conditions Weather

Temperatures

Precipitation

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Legend perfect weather pleasant tolerable unpleasant poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in this month?

For visitors traveling to Viana do Castelo, we recommend wearing layers. So maybe a skirt, t-shirt, shorts for during the day and jeans and a warm jacket for some days and evenings. Bring a rain jacket in case it rains during your stay. Plan on layering your clothes.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

10/10

Cycling

10/10

Walking

10/10

Barbeque

9/10

Camping

10/10

Outdoor sports

10/10

Interested in more climate information?

This site provides you with all the information you need about the climate in Viana do Castelo.

Our site offers climate and forecast data for every country in the world. Are you going to Portugal? On this website you can find historical weather averages for many cities in Portugal. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.