Month guide · Rio Maior, Portugal
Rio Maior in January: weather and what to expect
In January, Rio Maior averages highs of 14°C and lows of 7°C, with about 10 rainy days and 78 mm of rain. Highs are 1°C cooler than in December and 1°C cooler than in February. Crowds in Oeste e Vale do Tejo are low.
Is January a good time to visit?
Good for
No verdicts for Rio Maior in January yet. They only use climate values that are precise enough to judge with.
Not ideal for
- Reliable dry weatherAbout 10 rainy days in the month
Daily highs through January
Town-level · ERA5-Land 1991-2020Highs stay about the same through the month. Nights below 0°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 Rio Maior |
|---|---|---|---|
| Aljezur, Algarve | 15°C | 9 | 225 km |
| Mértola, Alentejo | 15°C | 7 | 219 km |
| São Marcos da Serra, Algarve | 15°C | 8 | 225 km |
| Odemira, Alentejo | 15°C | 8 | 195 km |
| Ermidas, Alentejo | 15°C | 8 | 156 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 15% (2016-2025 against 1991-2000).
Questions about Rio Maior in January
Is January a good time to visit Rio Maior?
It is less suited to reliable dry weather (about 10 rainy days in the month).
How warm is Rio Maior in January?
Average highs are 14°C and lows 7°C. December averages 15°C and February 15°C.
Does it rain much in Rio Maior in January?
About 10 days have at least 1 mm of rain, with 78 mm in total over the month.
Is Rio Maior busy in January?
In January 2025, nights booked through online platforms in Oeste e Vale do Tejo 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 Rio Maior in January?
About 9 h 41 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