13 to 23°C
temperature
2983 hours
sunshine per day
775 mm
rain
226 days
dry
139 days
rain
0 days
snow

Climate of Viana do Castelo

Viana do Castelo has a mediterranean climate. The summers are warm and dry, and the temperature is cold in the winter. The average annual temperature for Viana do Castelo is 34° degrees and there is about 305 inch of rain in a year. It is dry for 206 days a year with an average humidity of 77% and an UV-index of 4.

Climate averages for the whole year

  • Day: the average daily temperature during the day is between 13°C and 23°C
  • Night:the average nighttime temperature is between 8°C and 17°C
  • Sea temperature: the sea temperature is between 15°C and 20°C
  • Rain: it rains 139 days and there is a total of approximately 775 mm rainfall
  • Sun hours: throughout the year there are 2983 sun hours
Maximum temperature: between 13°C and 23°C
Warmest month: 23°C in August
Coldest month: 13°C in January
Night temperature: between 8°C and 17°C
Sea temperature: between 15°C and 20°C
Dry days: 226 days
Days with rain: 139 days
Days with snow: 0 days
Total rain sum: 775 mm
Hours of sunshine: 2983 hours

Do you want to go to Viana do Castelo?

These are the travel companies where you can book a trip to Viana do Castelo:

Temperature graph

This graph shows the average maximum temperature (red) and minimum temperature (blue) for Viana do Castelo.

Precipitation graph

This graph shows the average amount of rainfall per month for Viana do Castelo.

Climate table of Viana do Castelo

In this climate table you can see at a glance what the average weather per month is for Viana do Castelo. The data has been collected over a 30-year period, from which an average per month has been derived. From year to year the differences may be larger or smaller, but with this climate table you have a good idea of what the weather for Viana do Castelo might be like in a given month.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Day temp. (°F) 55 55 58 61 65 69 72 73 72 68 60 56
Night temp. (°F) 48 47 49 51 55 59 61 62 61 59 53 50
Water temp. (°F) 59 59 60 63 66 66 67 67 68 68 65 62
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Precipitation (inch) 44 31 30 20 20 11 5 5 12 44 50 35
Days with rain 17 13 15 13 11 9 6 5 7 13 16 14
Dry days 14 15 16 17 20 21 25 26 23 18 14 17
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sun hours per day 5 7 8 9 10 11 11 11 9 7 5 5
Wind force (Bft) 3 3 3 3 3 3 3 3 3 3 3 3
UV-index 3 3 4 4 5 5 5 5 5 4 3 3

Best time to visit Viana do Castelo

The best time to visit Viana do Castelo in Portugal is from May through September. In this period you have a pleasant temperature and little precipitation. The highest average temperature in Viana do Castelo is 73°F in August and the lowest is 55°F in January. The highest water temperature is 68°F and at its coldest the water is 59°F.

Climate of Viana do Castelo by month

What is the average climate in a given month for Viana do Castelo? Click on a month to see all monthly averages for sunshine, maximum and minimum temperatures, percent chance of rain per day, snowfall and number of rainy days.

Viana do Castelo weather experiences

Have you been to in Viana do Castelo?

Leave your Viana do Castelo weather experience for a chance to win $150!

Your email will not appear with the review and will not be passed on to third parties.
Seen a mistake?

Email us, we are grateful to you.