The temperatures in Viana do Castelo in October are usually low and can range between 14°C and 20°C.
You can expect rain for roughly half of the month of October in Viana do Castelo. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Our weather forecast can give you a great sense of what weather to expect in Viana do Castelo in October 2025.
If you’re planning to visit Viana do Castelo in the near future, we highly recommend that you review the 14 day weather forecast for Viana do Castelo before you arrive.
Temperatures
20° / 14°
Rainy Days
9
Snowy Days
0
Dry Days
22
Rainfall
90
mm
Sun Hours
2.3
Hrs
