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Weather in Bratislava for September 2025

Your guide to Bratislava weather in September - trends and predictions

    Temperatures

  • Until now, September 2025 in Bratislava is cooler than usual, with temperatures averaging 24.2 °C, this is -2.3 °C below the typical seasonal average.

  • An exceptional deviation from the historical average is forecasted for next days of September 2025 in Bratislava with the forecasted temperature being 21.9 °C, much lower than usual.

  • In general, the average temperature in Bratislava at the beginning of September is 28 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 18.7 °C by the end of September.

    • Rain 🌧️

  • Bratislava experiences moderate rainfall in September, with an average of 8 rainy days and a total precipitation of 112.3 mm.

Average dry days
22
Dry days
Average rainy days
8
Rainy days
Average snowy days
0
Snow days
Average temperatures
24°/14°
Temperatures
Average wind speed
19 km/h
Avg max wind
Average humidity
60 %
Avg humidity

Bratislava Weather September

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Partly cloudy
29°
2
Sunny
29°
3
Patchy light rain with thunder
28°
4
Sunny
29°
5
Partly cloudy
27°
6
Sunny
26°
7
Sunny
28°
8
Sunny
29°
9
Sunny
27°
10
Sunny
24°
11
Sunny
25°
12
Sunny
24°
13
Partly cloudy
19°
14
Overcast
18°
15
Patchy rain possible
26°
16
Moderate rain
20°
17
Partly cloudy
19°
18
Partly cloudy
22°
19
Sunny
26°
20
Sunny
26°
21
Sunny
27°
22
Sunny
27°
23
Patchy rain possible
22°
24
Patchy rain possible
18°
25
Patchy rain possible
17°
26
Sunny
17°
27
Sunny
19°
28
Sunny
20°
29
Sunny
20°
30
Light rain
20°

Temperatures trend during September in Bratislava

See the weather trend as well as the moving average line

September weather in Bratislava day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Partly cloudy
Partly cloudy
 29° /15° 0 mm 7
2 Sept. Sunny
Sunny
 29° /16° 3.8 mm 7
3 Sept. Patchy light rain with thunder
Patchy light rain with thunder
 28° /16° 2.8 mm 6
4 Sept. Sunny
Sunny
 29° /16° 0 mm 7
5 Sept. Partly cloudy
Partly cloudy
 27° /16° 0.1 mm 7
6 Sept. Sunny
Sunny
 26° /14° 0.5 mm 6
7 Sept. Sunny
Sunny
 28° /13° 0 mm 7
8 Sept. Sunny
Sunny
 29° /16° 0 mm 7
9 Sept. Sunny
Sunny
 27° /14° 7.8 mm 6
10 Sept. Sunny
Sunny
 24° /15° 17.8 mm 6
11 Sept. Sunny
Sunny
 25° /14° 0.3 mm 6
12 Sept. Sunny
Sunny
 24° /13° 4.1 mm 6
13 Sept. Partly cloudy
Partly cloudy
 19° /12° 18.7 mm 5
14 Sept. Overcast
Overcast
 18° /10° 13.8 mm 4
15 Sept. Patchy rain possible
Patchy rain possible
 26° /12° 0.9 mm 1.1
16 Sept. Moderate rain
Moderate rain
 20° /14° 11.4 mm 0.5
17 Sept. Partly cloudy
Partly cloudy
 19° /12° 0.1 mm 0.9
18 Sept. Partly cloudy
Partly cloudy
 22° /11° 0 mm 1.2
19 Sept. Sunny
Sunny
 26° /13° 0 mm 1.5
20 Sept. Sunny
Sunny
 26° /14° 0 mm 5
21 Sept. Sunny
Sunny
 27° /15° 0 mm 5
22 Sept. Sunny
Sunny
 27° /16° 0 mm 6
23 Sept. Patchy rain possible
Patchy rain possible
 22° /16° 0.4 mm 4
24 Sept. Patchy rain possible
Patchy rain possible
 18° /13° 0.7 mm 4
25 Sept. Patchy rain possible
Patchy rain possible
 17° /12° 2.4 mm 3
26 Sept. Sunny
Sunny
 17° /9° 0 mm 4
27 Sept. Sunny
Sunny
 19° /8° 0 mm 4
28 Sept. Sunny
Sunny
 20° /9° 0 mm 4
29 Sept. Sunny
Sunny
 20° /10° 0 mm 6
30 Sept. Light rain
Light rain
 20° /9° 0.8 mm 5
Next
Important Notice
Our weather forecast for Bratislava in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Bratislava forecast closer to your planned date for the most up-to-date weather information.
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Bratislava in September - FAQ

What are the expected maximum and minimum temperatures in Bratislava during September?
Enjoy moderate daytime temperatures of up to 24° and cooler nights around 14°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Bratislava during September?
Significant rainfall exceeding 112.3 mm is expected in Bratislava during September, occurring over more than 8 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Bratislava during September?
The average wind speed in Bratislava during September is 19 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Bratislava

Explore the daily rainfall trends and prepare for Bratislavas September weather 💧

UV exposure in Bratislava during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

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Get accurate weather forecasts for Bratislava, located at latitude 48.148 and longitude 17.107. Stay updated with localized weather information tailored for Bratislava.

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