Vienna · September
Run in the morning.
Comfortable average high of 71°F, dipping to 55°F at night. Humidity rises with the sun — morning runs catch the driest, coolest window.
Avg high / low
71° / 55°F
Humidity
71%
Rain days
13/mo
Wind
12 mph
What September feels like in Vienna
Sunrise
06:32
Mid-month average
Sunset
19:06
Mid-month average
Time-of-day breakdown
Morning
Coolest, driest air of the day. The window before sunrise is the most reliable comfortable hour.
Midday
Mild but UV and traffic peak. Workable if you don't mind shifting your pace.
Evening
Warm and runnable. Crowded routes but the air's typically calm.
What to wear running in Vienna in September
The kit for September in Vienna: shorts and a short-sleeve are the standard kit, a water-resistant cap or jacket on standby.
September vs the surrounding months
vs August
-9° avg high
-1 rain days
Vienna in August →
September
71°F avg high
13 rain days
Best: morning
vs October
+10° avg high
+1 rain days
Vienna in October →
Frequently Asked Questions
What is the best time of day to run in Vienna in September?+
Morning. Humidity rises with the sun — morning runs catch the driest, coolest window.
What's the average temperature in Vienna in September?+
Average high 71°F, average low 55°F.
How does September compare to surrounding months in Vienna?+
Compared to August (avg high 80°F), September is cooler. Compared to October (avg high 61°F), September is warmer.
Does it rain often in Vienna in September?+
Expect about 13 measurable rain days in September, on average.