Month guide · São Tiago de Custoias, Portugal
São Tiago de Custoias in December: weather and what to expect
In December, São Tiago de Custoias averages highs of 14°C and lows of 7°C, with about 13 rainy days and 152 mm of rain. Highs are 2°C cooler than in November and 1°C warmer than in January. Crowds in Norte are low.
Is December a good time to visit?
Good for
No verdicts for São Tiago de Custoias in December yet. They only use climate values that are precise enough to judge with.
Not ideal for
- Reliable dry weatherAbout 13 rainy days in the month
Daily highs through December
Town-level · ERA5-Land 1991-2020Highs fall about 1°C over the month.
December in detail
Town-level · ERA5-LandCrowds, holidays and daylight
Public holidays in December 2026
- 1 Dec Restoration of Independence Day
- 8 Dec Immaculate Conception
- 25 Dec Christmas Day
Local (municipal) holidays are not included.
Warmer in December
Where is warm in December →| Place | High | Rain days | From São Tiago de Custoias |
|---|---|---|---|
| Aljezur, Algarve | 16°C | 10 | 432 km |
| São Marcos da Serra, Algarve | 16°C | 9 | 427 km |
| Odemira, Alentejo | 16°C | 9 | 401 km |
| Mértola, Alentejo | 16°C | 7 | 404 km |
| Vila Nova de Milfontes, Alentejo | 16°C | 10 | 387 km |
The nearest towns with a warmer December. Distances are in a straight line.
How December is changing
Town-level · ERA5-LandDecember highs are 0.7°C warmer than in 1991-2000, and December rainfall is down about 20% (2016-2025 against 1991-2000).
Questions about São Tiago de Custoias in December
Is December a good time to visit São Tiago de Custoias?
It is less suited to reliable dry weather (about 13 rainy days in the month).
How warm is São Tiago de Custoias in December?
Average highs are 14°C and lows 7°C. November averages 16°C and January 13°C.
Does it rain much in São Tiago de Custoias in December?
About 13 days have at least 1 mm of rain, with 152 mm in total over the month.
Is São Tiago de Custoias busy in December?
In December 2025, nights booked through online platforms in Norte were about 35% 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 São Tiago de Custoias in December?
About 9 h 14 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