Month guide · Viana do Castelo, Portugal
Viana do Castelo in January: weather and what to expect
In January, Viana do Castelo averages highs of 13°C and lows of 7°C, with about 15 rainy days and 218 mm of rain. Highs are 1°C cooler than in December and 1°C cooler than in February. Crowds in Norte are low.
Is January a good time to visit?
Good for
No verdicts for Viana do Castelo in January yet. They only use climate values that are precise enough to judge with.
Not ideal for
- Reliable dry weatherAbout 15 rainy days in the month
- Warm-weather holidaysHighs of only 13°C
Daily highs through January
Town-level · ERA5-Land 1991-2020Highs stay about the same through the month. Nights below 0°C in about 1 in 4.
January in detail
Town-level · ERA5-LandCrowds, holidays and daylight
Public holidays in January 2027
- 1 Jan New Year's Day
Local (municipal) holidays are not included.
Warmer in January
Where is warm in January →| Place | High | Rain days | From Viana do Castelo |
|---|---|---|---|
| Aljezur, Algarve | 15°C | 9 | 487 km |
| Mértola, Alentejo | 15°C | 7 | 461 km |
| São Marcos da Serra, Algarve | 15°C | 8 | 483 km |
| Odemira, Alentejo | 15°C | 8 | 456 km |
| Ermidas, Alentejo | 15°C | 8 | 413 km |
The nearest towns with a warmer January. Distances are in a straight line.
How January is changing
Town-level · ERA5-LandJanuary highs are 0.5°C warmer than in 1991-2000, and January rainfall is up about 10% (2016-2025 against 1991-2000).
Questions about Viana do Castelo in January
Is January a good time to visit Viana do Castelo?
It is less suited to reliable dry weather (about 15 rainy days in the month); warm-weather holidays (highs of only 13°C).
How warm is Viana do Castelo in January?
Average highs are 13°C and lows 7°C. December averages 14°C and February 14°C.
Does it rain much in Viana do Castelo in January?
About 15 days have at least 1 mm of rain, with 218 mm in total over the month.
Is Viana do Castelo busy in January?
In January 2025, nights booked through online platforms in Norte were about 20% of the busiest month, which we count as low. The figure is for the whole region and leaves out hotels.
How long are the days in Viana do Castelo in January?
About 9 h 28 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