Spring (March–May): Average 12–15°C, mild climate with less rainfall and abundant sunshine. Common activities: coastal walks, visiting historical sites, enjoying outdoor picnics. Recommended clothing: light jacket, comfortable trousers or skirt, comfortable shoes.
Summer (June–August): Average 17–20°C, warm and dry climate with abundant sunshine, ideal for beach holidays. Common activities: swimming, sunbathing, water sports, exploring surrounding natural landscapes. Recommended clothing: light and breathable clothing, sunglasses, hat, sunscreen.
Autumn (September–November): Average 15–17°C, pleasant and comfortable climate with gradually increasing rainfall. Common activities: hiking, enjoying autumn scenery, tasting local cuisine. Recommended clothing: light jacket, long-sleeved shirts, comfortable shoes.
Winter (December–February): Average 11–13°C, mild and humid climate with less rainfall. Common activities: visiting museums, exploring the town, enjoying indoor activities. Recommended clothing: warm jacket, sweater, scarf, hat, waterproof jacket.
Viana do Castelo climatological average
Annual average temperature: approx. 15°C / Annual rainfall: approx. 55 mm / Summer humidity: 60%–70% / Rainiest month: March
Viana do Castelo monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
11.8°C
8.3
February
12.7°C
7.4
March
12°C
9.5
April
14.4°C
4.1
May
14.8°C
4.9
June
17.7°C
1.4
July
19.4°C
1.8
August
19.7°C
0.1
September
17.6°C
4.6
October
16.7°C
7.7
November
15.3°C
3.8
December
11.2°C
1.8
Viana do Castelo weather for the next seven days
10/29
Wednesday
Patchy rain nearby
18.5°C/14°C
10/30
Thursday
Moderate rain
16.6°C/13.5°C
10/31
Friday
Heavy rain
17.3°C/15°C
11/1
Saturday
Heavy rain
14.1°C/12.7°C
11/2
Sunday
Sunny
17.3°C/11°C
11/3
Monday
Sunny
16.1°C/11.1°C
11/4
Tuesday
Partly Cloudy
17.8°C/11.3°C
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