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Czech RepublicThe weather in September in Brno
It's pleasantly warm in September in Brno with an average temperature of 20°C. Temperatures this month range from a low of 17°C to a high of 24°C. At night, you can expect temperatures between 9°C and 15°C.
Looking for great weather? September is a good time to be in Brno. The temperatures are nice, and there’s not too much rain.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in September for Brno, Czech Republic. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 31°C in 2015, Brno reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 9°C in 2020. The extreme nighttime temperatures ranged from a lowest recorded value of 1°C to a highest value of 20°C.
Rainfall amount
In September, there is an average of 55 mm of precipitation, spread over 9 days. The wind speed is around 3 Bft, mostly coming from the South.
Daily weather in September for Brno
Click on any day in September to get detailed info about the usual weather on that day in Brno. Check out the historical temperatures and precipitation over the past 10 years on this day.
September weather comparison
| Brno | New York | |
|---|---|---|
| Average temperature | 20°C | 27°C |
| Max. temperature | 24°C | 31°C |
| Min. temperature | 9°C | -5°C |
| Total precipitation | 55 mm | 57 mm |
| Rainy days | 9 days | 9 days |
Start of September
The month of September starts in Brno with warm temps, averaging around 22°C during the day and nights around 13°C.
Mid September
By mid-September, daytime temps drop to around 21°C, with nights around 13°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
End of September
By the end of September, the average daytime temperature in Brno is around 18°C, while nighttime temps are about 10°C. A shower might pop up, but overall, the weather will be dry and sunny.
UV index
The UV index is a maximum of 6 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.
Check out the climate of Brno for all months and discover the best travel time
Curious about the weather in other parts of Czech Republic? Check out the climate and weather for spots like Prague, Český Krumlov, Karlovy Vary, or explore other destinations in Czech Republic.
Temperature charts
These charts show the average temperatures in September in Brno, Czech Republic. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in September in Brno
Temperature in September in Brno over the years
Precipitation charts
These charts show the average amount of precipitation in September in Brno, Czech Republic. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in September in Brno
Total precipitation in September in Brno over the years
Daily UV index in September in Brno
This chart shows the average daily UV index in September in Brno, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in September in Brno
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Average weather in Brno by month
Click on a month below to see detailed weather info for Brno. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.