The climate in Mariefred during September can be summarized as mild and reasonably dry.
September is in the fall / autumn in Mariefred and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a cool 15°C (59°F), whilst at night 7°C (45°F) is normal.
| Daytime temperature | 15.1°C 59.1°F |
|---|---|
| Nightly temperature | 7.4°C 45.2°F |
| Average temperature | 11.2°C 52.2°F |
| Daily sunshine | 5 hrs |
| Avg rainfall | 54 mm 2.1 ins |
| Rainy days | 14 days |
| Sea temperature | 13.7°C 56.7°F |
| Humidity | 80% |
| Windspeed | 14.4kph 9 mph |
On average September is the 3rd wettest month of the year in Mariefred with around 54mm 2.1 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 14 days, although this may vary considerably.
On the flip side this corresponds to an average of 5 hours of sunshine per day.
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Mariefred in September 2025.
Best places to visit in September
| Hottest month: | July | 21.2°C 70.2°F |
|---|---|---|
| Driest month: | March | 25mm 1ins |
| Sunniest month: | June | 9.8hrs |
| Coldest month: | January | -1.3°C 29.7°F |
| Wettest month: | July | 67mm 2.6ins |