Verdict: Excellent month
Vienna Weather in September
September hits the sweet spot in Vienna — highs around 22°C (72°F), ideal for a full day on foot. Expect showers on roughly 10 days of the month — rarely trip-ruining, worth planning around. Overall, September is one of the best months of the year to be in Vienna.
Average high
22°C / 72°F
Average low
13°C / 55°F
Rain days
~10
Precipitation
101 mm
What to pack for Vienna in September
- Summer clothes, plus one light layer for air-con and evenings
- A packable rain shell or compact umbrella earns its space
- Comfortable walking shoes — every guide on this site assumes you'll use them
September against the rest of the year
Warmest in Vienna: Jul (28°C / 82°F) · Coolest: Jan (5°C / 41°F) · Wettest: May (~13 rain days)
5°
-1°
Jan
9°
2°
Feb
12°
2°
Mar
15°
5°
Apr
20°
10°
May
25°
15°
Jun
28°
17°
Jul
27°
17°
Aug
22°
13°
Sep
16°
8°
Oct
9°
3°
Nov
5°
0°
Dec
Daily highs / lows in °C · bars show rain days per month · ERA5 climate normals (2020–2024)