Month guide · Sines, Portugal
Sines in January: weather and what to expect
In January, Sines averages highs of 15°C and lows of 9°C, with about 10 rainy days and 69 mm of rain. Highs are 1°C cooler than in December and 1°C cooler than in February. Crowds in the Alentejo are low.
Is January a good time to visit?
Good for
No verdicts for Sines in January 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 January
Town-level · ERA5-Land 1991-2020Highs fall about 1°C over the month. Nights below 5°C in about 1 in 2.
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 Sines |
|---|---|---|---|
| Aljezur, Algarve | 15°C | 9 | 71 km |
| Bensafrim, Algarve | 15°C | 8 | 90 km |
| São Marcos da Serra, Algarve | 15°C | 8 | 79 km |
| Odemira, Alentejo | 15°C | 8 | 45 km |
| Ermidas, Alentejo | 15°C | 8 | 43 km |
The nearest towns with a warmer January. Distances are in a straight line.
How January is changing
Town-level · ERA5-LandJanuary highs are 0.7°C warmer than in 1991-2000, and January rainfall is down about 30% (2016-2025 against 1991-2000). Days above 20°C in January went from 0 to 0.6 a year on average.
Questions about Sines in January
How warm is Sines in January?
Average highs are 15°C and lows 9°C. December averages 16°C and February 16°C.
Does it rain much in Sines in January?
About 10 days have at least 1 mm of rain, with 69 mm in total over the month.
Is Sines busy in January?
In January 2025, nights booked through online platforms in the Alentejo were about 10% 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 Sines in January?
About 9 h 48 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