September · Austria
Best time to visit Graz in September Weather, crowds & prices
Weather in Graz in September
Average temperature 17°C, 109 mm of rain, about 10 days with 6+ hours of sunshine and 73% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
7.1/10
Ranked #6 of 12 months
- Avg temp
- 17°C
- Rainfall
- 109 mm
- Humidity
- 73%
- Days with 6h+ sun
- 10
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
September in Graz scores 7.1/10 for sightseeing and cultural travel - an above-average month (#6 of 12). Expect around 17°C, 109 mm of rain, and roughly 10 days with 6+ hours of sunshine this month.
Graz's painted facades, castle hill and design university make it Austria's creative second city.
September in Graz: strong conditions, 6th of 12
September averages 17°C (62°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
At 109 mm this is a genuinely wet month: about 10 days with 6+ hours of sunshine in total, and outdoor plans need an indoor fallback.
It scores 7.1/10 here, 6th of 12 months, against 7.9/10 in the destination's best month.
Pack layers you can shed by midday plus one warm layer for the evening, a proper rain shell rather than an umbrella.
Figure on mid-season pricing, with crowds are moderate.
Frequently asked
- What is the weather like in Graz in September?
- In September, Graz averages 17°C, 109 mm of rain, and about 10 days with 6+ hours of sunshine. Its climate-comfort score is 7.1/10.
- Is September a good time to visit Graz?
- September earns a 7.1/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Graz in September?
- Expect about 109 mm of rain in September. Average humidity is 73% and there are about 10 days with 6+ hours of sunshine.
Curated in Graz
Tickets & experiences
Things to do in Graz
Graz, Austria. Live activities and tours from GetYourGuide, matched to this destination.