The bar chart below shows the average monthly peak daytime temperatures at Viana do Castelo
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.
The graph below shows the average rainfall and number of rainy days per month.
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)
The bar chart below shows the average daily sunshine hours in 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 |
The graph below shows the daily range of temperatures for each month.
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 |
The graph below shows the average sea temperature.
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 |
The graph below shows the average wind speed.
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.
The graph below shows the average relative humidity.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
---|---|---|---|---|---|---|---|---|---|---|---|
82% | 79% | 75% | 74% | 74% | 73% | 72% | 72% | 75% | 79% | 81% | 82% |
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 |