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

What should you pack for a trip to Viana do Castelo in May? Our guide gives you the essential weather details for this month.

Temperatures

The month of May in Viana do Castelo typically includes pleasant temperatures and high rainfall. Daytime temperatures hover around 19°C, while nights can cool down to about 13°C.

Precipitation

Viana do Castelo in May usually receives high rainfall, averaging around 123 mm for the month. Rain is expected on roughly 14 days.

Average sunshine

With approximately 255 hours hours of sun, the days are filled with brightness. It makes it a perfect month for outdoor activities.

If you prefer dry days with pleasant temperatures, June, July, August and September typically offer 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 May

Min Temperature 13°C  

Max Temperature 19°C  

Chance of Rain 48%  

Precipitation 123 mm  

Rainy days 14 days  

Humidity 74% *  

Sunshine 255 hours *  

Percentage Sunshine 61% *  

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

Where to go in Portugal in May

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.

Cycling

9/10

Walking

9/10

Camping

6/10

Outdoor sports

9/10

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.