Klagenfurt am Wörthersee Weather in September
What's the weather like in Klagenfurt am Wörthersee (Carinthia) in September 2025?
The climate in Klagenfurt am Wörthersee during September can be summarized as mild and wet.
September is in the fall / autumn in Klagenfurt am Wörthersee and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 20°C (68°F), whilst at night 9°C (48°F) is normal.
| Daytime temperature | 20.1°C 68.1°F |
|---|---|
| Nightly temperature | 9°C 48.1°F |
| Average temperature | 14.5°C 58.1°F |
| Daily sunshine | 6.6 hrs |
| Avg rainfall | 140 mm 5.5 ins |
| Rainy days | 11 days |
| Sea temperature | 22.5°C 72.4°F |
| Humidity | 81% |
| Windspeed | 5.4kph 3 mph |
On average September is the 5th wettest month of the year in Klagenfurt am Wörthersee with around 140mm 5.5 inches of rain making it a wet time to visit. This rainfall is typically spread over 11 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.6 hours of sunshine per day.
September temperatures in Klagenfurt am Wörthersee
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 Klagenfurt am Wörthersee in September 2025.
Other monthly averages
Best places to visit in September
Klagenfurt am Wörthersee weather stats
| Hottest month: | July | 24°C 75.2°F |
|---|---|---|
| Driest month: | February | 82mm 3.2ins |
| Sunniest month: | August | 8.1hrs |
| Coldest month: | January | 0.1°C 32.2°F |
| Wettest month: | June | 158mm 6.2ins |
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