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Viana do Castelo

Viana do Castelo 1
Travel Info
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Travel Info
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Viana do Castelo Weather, Climate and Best Time to Visit

Data source:Meteostat
Update date:2025-09

Viana do Castelo year round climate

  • 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

9/24
Thursday
Sunny
26.4°C/14.5°C
9/25
Friday
Sunny
25.8°C/13.1°C
9/26
Saturday
Overcast
26.2°C/15.8°C
9/27
Sunday
Overcast
23.2°C/16.3°C
9/28
Monday
Overcast
22.3°C/15.8°C
9/29
Tuesday
Light rain shower
19.3°C/15.7°C
9/30
Wednesday
Sunny
20.8°C/13.1°C