Month guide · Barreiro, Portugal
Barreiro in January: weather and what to expect
In January, Barreiro averages highs of 15°C and lows of 9°C, with about 9 rainy days and 67 mm of rain. Highs are 1°C cooler than in December and 1°C cooler than in February. Crowds in the Lisbon area are medium.
Is January a good time to visit?
Good for
No verdicts for Barreiro 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 stay about the same through the month. Nights below 5°C in about 1 in 3.
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 Barreiro |
|---|---|---|---|
| Aljezur, Algarve | 15°C | 9 | 152 km |
| Mértola, Alentejo | 15°C | 7 | 168 km |
| São Marcos da Serra, Algarve | 15°C | 8 | 157 km |
| Odemira, Alentejo | 15°C | 8 | 124 km |
| Ermidas, Alentejo | 15°C | 8 | 95 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 35% (2016-2025 against 1991-2000).
Questions about Barreiro in January
How warm is Barreiro in January?
Average highs are 15°C and lows 9°C. December averages 15°C and February 15°C.
Does it rain much in Barreiro in January?
About 9 days have at least 1 mm of rain, with 67 mm in total over the month.
Is Barreiro busy in January?
In January 2025, nights booked through online platforms in the Lisbon area were about 35% 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 Barreiro in January?
About 9 h 44 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