Month guide · Santa Iria da Azóia, Portugal
Santa Iria da Azóia in December: weather and what to expect
In December, Santa Iria da Azóia averages highs of 14°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 Lisbon area are medium.
Is December a good time to visit?
Good for
No verdicts for Santa Iria da Azóia 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.
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 Santa Iria da Azóia |
|---|---|---|---|
| Aljezur, Algarve | 16°C | 10 | 171 km |
| São Marcos da Serra, Algarve | 16°C | 9 | 176 km |
| Odemira, Alentejo | 16°C | 9 | 144 km |
| Mértola, Alentejo | 16°C | 7 | 183 km |
| Vila Nova de Milfontes, Alentejo | 16°C | 10 | 127 km |
The nearest towns with a warmer December. Distances are in a straight line.
How December is changing
Town-level · ERA5-LandDecember highs are 0.5°C warmer than in 1991-2000, and December rainfall is down about 25% (2016-2025 against 1991-2000).
Questions about Santa Iria da Azóia in December
How warm is Santa Iria da Azóia in December?
Average highs are 14°C and lows 9°C. November averages 17°C and January 13°C.
Does it rain much in Santa Iria da Azóia in December?
About 10 days have at least 1 mm of rain, with 79 mm in total over the month.
Is Santa Iria da Azóia busy in December?
In December 2025, nights booked through online platforms in the Lisbon area were about 45% 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 Santa Iria da Azóia in December?
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