September · Austria
Best time to visit Klagenfurt in September Weather, crowds & prices
Weather in Klagenfurt in September
Average temperature 14°C, 193 mm of rain, about 11 days with 6+ hours of sunshine and 80% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
5.8/10
Ranked #6 of 12 months
- Avg temp
- 14°C
- Rainfall
- 193 mm
- Humidity
- 80%
- Days with 6h+ sun
- 11
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
September in Klagenfurt scores 5.8/10 for sightseeing and cultural travel - an above-average month (#6 of 12). Expect around 14°C, 193 mm of rain, and roughly 11 days with 6+ hours of sunshine this month.
Klagenfurt sits beside Wörthersee lake, with a dragon fountain and the Carinthian Alps around it.
September in Klagenfurt: mixed conditions, plan around the weather
Temperatures hover around 14°C (57°F) — the kind of month where neither heat nor cold forces the schedule.
193 mm of rain signals a properly wet month, with only about 11 days with 6+ hours of sunshine to count on — build indoor options into the schedule.
That is 5.8/10 on the same scale — 6th of 12 months, versus 7.5/10 for the best month here.
Pack layers you can shed by midday plus one warm layer for the evening, a proper rain shell rather than an umbrella.
Expect mid-season pricing, and crowds are moderate.
If your dates are flexible, June is materially better in Klagenfurt — 1.7 points higher on the same scale.
Frequently asked
- What is the weather like in Klagenfurt in September?
- In September, Klagenfurt averages 14°C, 193 mm of rain, and about 11 days with 6+ hours of sunshine. Its climate-comfort score is 5.8/10.
- Is September a good time to visit Klagenfurt?
- September earns a 5.8/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Klagenfurt in September?
- Expect about 193 mm of rain in September. Average humidity is 80% and there are about 11 days with 6+ hours of sunshine.
Curated in Klagenfurt
Tickets & experiences
Things to do in Klagenfurt
Klagenfurt, Austria. Live activities and tours from GetYourGuide, matched to this destination.