Month guide · Grândola, Portugal
Grândola in December: weather and what to expect
In December, Grândola averages highs of 15°C and lows of 9°C, with about 10 rainy days and 79 mm of rain. Highs are 2°C cooler than in November and 1°C warmer than in January. Crowds in the Alentejo are low.
Is December a good time to visit?
Good for
No verdicts for Grândola 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. A day above 20°C happens in roughly 1 December in 6.
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 Grândola |
|---|---|---|---|
| Aljezur, Algarve | 16°C | 10 | 98 km |
| São Marcos da Serra, Algarve | 16°C | 9 | 92 km |
| Odemira, Alentejo | 16°C | 9 | 65 km |
| Mértola, Alentejo | 16°C | 7 | 99 km |
| Vila Nova de Milfontes, Alentejo | 16°C | 10 | 54 km |
The nearest towns with a warmer December. Distances are in a straight line.
How December is changing
Town-level · ERA5-LandDecember highs are 0.8°C warmer than in 1991-2000, and December rainfall is down about 40% (2016-2025 against 1991-2000). Days above 20°C in December went from 0.1 to 0.9 a year on average.
Questions about Grândola in December
How warm is Grândola in December?
Average highs are 15°C and lows 9°C. November averages 18°C and January 14°C.
Does it rain much in Grândola in December?
About 10 days have at least 1 mm of rain, with 79 mm in total over the month.
Is Grândola busy in December?
In December 2025, nights booked through online platforms in the Alentejo 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 Grândola in December?
About 9 h 32 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