Month guide · São João das Lampas, Portugal
São João das Lampas in September: weather and what to expect
In September, São João das Lampas averages highs of 22°C and lows of 17°C, with about 5 rainy days and 32 mm of rain. Highs are 1°C cooler than in August and 2°C warmer than in October. Our rules rate it good for walking and cycling. Crowds in the Lisbon area are high.
Is September a good time to visit?
Good for
- Walking and cyclingHighs of 22°C with about 5 rainy days
Not ideal for
Nothing stands out as a weaker fit.
Daily highs through September
Town-level · ERA5-Land 1991-2020Highs fall about 2°C over the month. A day above 25°C happens in roughly 1 September in 2; nights below 15°C in about 1 in 2.
September in detail
Town-level · ERA5-LandCrowds, holidays and daylight
Public holidays in September 2027
No national or regional public holidays.
Local (municipal) holidays are not included.
Warmer in September
Where is warm in September →| Place | High | Rain days | From São João das Lampas |
|---|---|---|---|
| Marinhais, Oeste e Vale do Tejo | 28°C | 5 | 63 km |
| Benavente, Oeste e Vale do Tejo | 28°C | 5 | 52 km |
| Salvaterra de Magos, Oeste e Vale do Tejo | 28°C | 5 | 55 km |
| Samora Correia, Oeste e Vale do Tejo | 27°C | 5 | 46 km |
| Pontével, Oeste e Vale do Tejo | 27°C | 5 | 57 km |
The nearest towns with a warmer September. Distances are in a straight line.
How September is changing
Town-level · ERA5-LandSeptember highs are 0.5°C warmer than in 1991-2000, and September rainfall is about the same (2016-2025 against 1991-2000). Days above 25°C in September went from 0.7 to 1.5 a year on average.
Questions about São João das Lampas in September
Is September a good time to visit São João das Lampas?
Our rules rate September good for walking and cycling (highs of 22°C with about 5 rainy days).
How warm is São João das Lampas in September?
Average highs are 22°C and lows 17°C. August averages 23°C and October 19°C.
Does it rain much in São João das Lampas in September?
About 5 days have at least 1 mm of rain, with 32 mm in total over the month.
Is São João das Lampas busy in September?
In September 2025, nights booked through online platforms in the Lisbon area were about 75% of the busiest month, which we count as high. The figure is for the whole region and leaves out hotels.
How long are the days in São João das Lampas in September?
About 12 h 30 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