Month guide · Marinha Grande, Portugal
Marinha Grande in September: weather and what to expect
In September, Marinha Grande averages highs of 24°C and lows of 16°C, with about 6 rainy days and 44 mm of rain. Highs are 1°C cooler than in August and 3°C warmer than in October. Our rules rate it good for walking and cycling. Crowds in Centro are medium.
Is September a good time to visit?
Good for
- Walking and cyclingHighs of 24°C with about 6 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 30°C happens in roughly 1 September 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 Marinha Grande |
|---|---|---|---|
| Riachos, Alentejo | 28°C | 5 | 49 km |
| Entroncamento, Alentejo | 28°C | 5 | 51 km |
| Tomar, Alentejo | 28°C | 5 | 48 km |
| Torres Novas, Alentejo | 27°C | 5 | 45 km |
| Meia Via, Alentejo | 27°C | 5 | 48 km |
The nearest towns with a warmer September. Distances are in a straight line.
How September is changing
Town-level · ERA5-LandSeptember highs are 1.4°C warmer than in 1991-2000, and September rainfall is down about 30% (2016-2025 against 1991-2000). Days above 25°C in September went from 5.3 to 9.1 a year on average.
Questions about Marinha Grande in September
Is September a good time to visit Marinha Grande?
Our rules rate September good for walking and cycling (highs of 24°C with about 6 rainy days).
How warm is Marinha Grande in September?
Average highs are 24°C and lows 16°C. August averages 25°C and October 21°C.
Does it rain much in Marinha Grande in September?
About 6 days have at least 1 mm of rain, with 44 mm in total over the month.
Is Marinha Grande busy in September?
In September 2025, nights booked through online platforms in Centro were about 40% 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 Marinha Grande in September?
About 12 h 31 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