Month guide · Santarém, Portugal
Santarém in December: weather and what to expect
In December, Santarém averages highs of 14°C and lows of 7°C, with about 9 rainy days and 77 mm of rain. Highs are 3°C cooler than in November and 1°C warmer than in January. Crowds in Oeste e Vale do Tejo are low.
Is December a good time to visit?
Good for
No verdicts for Santarém in December yet. They only use climate values that are precise enough to judge with.
Not ideal for
Nothing stands out as a weaker fit.
Daily highs through December
Town-level · ERA5-Land 1991-2020Highs fall about 1°C over the month. Nights below 0°C in about 1 in 3.
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 Santarém |
|---|---|---|---|
| Aljezur, Algarve | 16°C | 10 | 213 km |
| São Marcos da Serra, Algarve | 16°C | 9 | 210 km |
| Odemira, Alentejo | 16°C | 9 | 182 km |
| Mértola, Alentejo | 16°C | 7 | 198 km |
| Vila Nova de Milfontes, Alentejo | 16°C | 10 | 168 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 30% (2016-2025 against 1991-2000).
Questions about Santarém in December
How warm is Santarém in December?
Average highs are 14°C and lows 7°C. November averages 17°C and January 14°C.
Does it rain much in Santarém in December?
About 9 days have at least 1 mm of rain, with 77 mm in total over the month.
Is Santarém busy in December?
In December 2025, nights booked through online platforms in Oeste e Vale do Tejo were about 15% 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 Santarém in December?
About 9 h 26 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