Grünburg Weather in September
What's the weather like in Grünburg (Upper Austria) in September 2025?
The climate in Grünburg during September can be summarized as mild and a little damp.
September is in the fall / autumn in Grünburg and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 18°C (65°F), whilst at night 8°C (47°F) is normal.
| Daytime temperature | 18.2°C 64.8°F |
|---|---|
| Nightly temperature | 8.2°C 46.8°F |
| Average temperature | 13.2°C 55.8°F |
| Daily sunshine | 6 hrs |
| Avg rainfall | 89 mm 3.5 ins |
| Rainy days | 12 days |
| Sea temperature | 21.2°C 70.2°F |
| Humidity | 80% |
| Windspeed | 7.9kph 5 mph |
On average September is the 6th wettest month of the year in Grünburg with around 89mm 3.5 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 12 days, although this may vary considerably.
On the flip side this corresponds to an average of 6 hours of sunshine per day.
September temperatures in Grünburg
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 Grünburg in September 2025.
Other monthly averages
Best places to visit in September
Grünburg weather stats
| Hottest month: | July | 22°C 71.6°F |
|---|---|---|
| Driest month: | January | 64mm 2.5ins |
| Sunniest month: | August | 7.3hrs |
| Coldest month: | January | 0.2°C 32.4°F |
| Wettest month: | July | 153mm 6ins |
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