Grästorp Weather in September
What's the weather like in Grästorp (Västra Götaland) in September 2025?
The climate in Grästorp during September can be summarized as mild and a little damp.
September is in the fall / autumn in Grästorp and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a cool 15°C (60°F), whilst at night 7°C (45°F) is normal.
| Daytime temperature | 15.4°C 59.6°F |
|---|---|
| Nightly temperature | 7.3°C 45.1°F |
| Average temperature | 11.3°C 52.3°F |
| Daily sunshine | 5 hrs |
| Avg rainfall | 82 mm 3.2 ins |
| Rainy days | 15 days |
| Sea temperature | 15°C 59.1°F |
| Humidity | 81% |
| Windspeed | 16.9kph 11 mph |
On average September is the 2nd wettest month of the year in Grästorp with around 82mm 3.2 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 15 days, although this may vary considerably.
On the flip side this corresponds to an average of 5 hours of sunshine per day.
September temperatures in Grästorp
September rainfall
September hourly sunshine
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 Grästorp in September 2025.
Other monthly averages
Best places to visit in September
Grästorp weather stats
| Hottest month: | July | 20.6°C 69.1°F |
|---|---|---|
| Driest month: | February | 39mm 1.5ins |
| Sunniest month: | June | 9.4hrs |
| Coldest month: | January | -0.6°C 30.9°F |
| Wettest month: | November | 82mm 3.2ins |
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