Viana do Castelo monthly weather averages

Contents

Average daytime temperature

The bar chart below shows the average monthly peak daytime temperatures at Viana do Castelo

Viana do Castelo average temperature chart (Celsius) Viana do Castelo average temperature chart (Fahrenheit)
Average monthly temperatures in Viana do Castelo (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 12.2 13 14.8 16.2 18.4 21.8 24.1 24.1 22.8 19.4 15 12.4
°F 53.9 55.3 58.6 61.2 65.1 71.2 75.3 75.3 73 67 59 54.4

Please note: these are the average peak daytime temperatures (usually around mid-afternoon) so do not show daytime / night highs and lows. To see the daily range of temperatures have a look at the temperature max / min chart below.

Average rainfall & rainy days

The graph below shows the average rainfall and number of rainy days per month.

Viana do Castelo monthly rainfall chart (mm) Viana do Castelo monthly rainfall chart (inches)
Average monthly rainfall in Viana do Castelo (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 232 218 154 132 114 66 29 27 89 170 175 223
inches 9.1 8.6 6.1 5.2 4.5 2.6 1.1 1.1 3.5 6.7 6.9 8.8
Rainy days 19 18 17 16 15 10 7 7 10 15 17 18

Average annual rainfall in Viana do Castelo: 1660.1mm (653.6 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Viana do Castelo

Viana do Castelo average daily sunshine chart
Average daily sunshine Viana do Castelo
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 4.1 4.4 6 7 8.2 9.5 10.4 10 7.8 6 4.7 4

Day / night temperatures

The graph below shows the daily range of temperatures for each month.

Viana do Castelo average minimum / maximum temperatures (Celsius) Viana do Castelo average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Viana do Castelo (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 5.1 5.7 6.2 7.6 9.8 12.6 14.3 14.1 13.4 11 7.4 5.6
Max °C 12.4 13.2 15 16.5 18.6 22 24.3 24.3 23 19.7 15.2 12.6
Min °F 41.1 42.2 43.2 45.6 49.6 54.7 57.7 57.4 56.1 51.7 45.3 42.1
Max °F 47.7 48.9 51.1 53.6 57.6 63.1 66.7 66.6 64.8 59.5 52.3 48.4

Sea temperature

The graph below shows the average sea temperature.

Viana do Castelo average sea temperature chart (Celsius) Viana do Castelo average sea temperature chart (Fahrenheit)
Average sea temperature around Viana do Castelo in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 14.3 13.8 13.8 14.4 15.5 17.2 18.3 18.9 18.5 17.5 16.3 15.1
°F 57.7 56.8 56.9 57.8 59.8 62.9 65 66 65.3 63.6 61.4 59.1

Wind speed

The graph below shows the average wind speed.

Viana do Castelo average winspeed by month (km/h) Viana do Castelo average winspeed by month (mph)
Average wind speed in Viana do Castelo (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 19 19 18 17 17 15 14 14 14 15 17 18
mph 12 12 11 11 10 9 9 9 9 9 10 11

A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.

Relative humidity

The graph below shows the average relative humidity.

Viana do Castelo relative humidity averages
Average relative humidity in Viana do Castelo
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
82% 79% 75% 74% 74% 73% 72% 72% 75% 79% 81% 82%

Other monthly averages

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

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
Warmest sea: August 18.9°C 66°F
Map showing location of Viana do Castelo (41.69323, -8.83287) Viana do Castelo map pin © Google

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