The temperatures in Ostrava in September are usually low and can range between 11°C and 20°C.
You can expect about 3 to 8 days of rain in Ostrava during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Ostrava in September 2025.
If you’re planning to visit Ostrava in the near future, we highly recommend that you review the 14 day weather forecast for Ostrava before you arrive.
Temperatures
20° / 11°
Rainy Days
6
Snowy Days
0
Dry Days
24
Rainfall
102
mm
Sun Hours
10.1
Hrs
