Month guide · Viana do Castelo, Portugal
Viana do Castelo in October: weather and what to expect
In October, Viana do Castelo averages highs of 19°C and lows of 13°C, with about 14 rainy days and 229 mm of rain. Highs are 3°C cooler than in September and 4°C warmer than in November. Crowds in Norte are medium.
Is October a good time to visit?
Good for
No verdicts for Viana do Castelo in October yet. They only use climate values that are precise enough to judge with.
Not ideal for
- Reliable dry weatherAbout 14 rainy days in the month
Daily highs through October
Town-level · ERA5-Land 1991-2020Highs fall about 3°C over the month. A day above 25°C happens in roughly 1 October in 3.
October in detail
Town-level · ERA5-LandCrowds, holidays and daylight
Public holidays in October 2027
- 5 Oct Republic Day
Local (municipal) holidays are not included.
Warmer in October
Where is warm in October →| Place | High | Rain days | From Viana do Castelo |
|---|---|---|---|
| Montalvo, Oeste e Vale do Tejo | 23°C | 10 | 250 km |
| Vila Nova da Barquinha, Oeste e Vale do Tejo | 23°C | 10 | 250 km |
| Entroncamento, Oeste e Vale do Tejo | 23°C | 10 | 250 km |
| Praia do Ribatejo, Oeste e Vale do Tejo | 23°C | 10 | 251 km |
| Tomar, Oeste e Vale do Tejo | 22°C | 11 | 235 km |
The nearest towns with a warmer October. Distances are in a straight line.
How October is changing
Town-level · ERA5-LandOctober highs are 1.7°C warmer than in 1991-2000, and October rainfall is up about 15% (2016-2025 against 1991-2000). Days above 20°C in October went from 7.0 to 15 a year on average.
Questions about Viana do Castelo in October
Is October a good time to visit Viana do Castelo?
It is less suited to reliable dry weather (about 14 rainy days in the month).
How warm is Viana do Castelo in October?
Average highs are 19°C and lows 13°C. September averages 22°C and November 16°C.
Does it rain much in Viana do Castelo in October?
About 14 days have at least 1 mm of rain, with 229 mm in total over the month.
Is Viana do Castelo busy in October?
In October 2025, nights booked through online platforms in Norte were about 55% of the busiest month, which we count as medium. The figure is for the whole region and leaves out hotels.
How long are the days in Viana do Castelo in October?
About 11 h 10 min from sunrise to sunset in the middle of the month.
Sources
Climate: ERA5-Land, Copernicus Climate Change Service (C3S) Climate Data Store, contains modified Copernicus information (CC BY 4.0). Crowds: Eurostat, nights spent in short-stay accommodation booked through online platforms (tour_ce_omn12) (CC BY 4.0). Place names and populations: GeoNames (CC BY 4.0). Climate averages cover 1991-2020. Daylight: calculated from the town's coordinates. Full methodology