September
Weather in Bratislava for September 2025
Your guide to Bratislava weather in September - trends and predictions
In general, the average temperature in Bratislava at the beginning of September is 29.4 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 21.1 °C by the end of September.
Bratislava experiences moderate rainfall in September, with an average of 8 rainy days and a total precipitation of 112.3 mm.
Is September a good time to visit Bratislava? check out the best time to travel to Bratislava page.
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Temperatures
Rain 🌧️
More
22
Dry days
8
Rainy days
0
Snow days
24°/14°
Temperatures
19 km/h
Avg max wind
60 %
Avg humidity
Bratislava in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  30° | 2  31° | 3  30° | 4 29° | 5 29° | 6 27° | 7 30° |
| 8 29° | 9 27° | 10 25° | 11 27° | 12 24° | 13 18° | 14  16° |
| 15 18° | 16 19° | 17 23° | 18 26° | 19  22° | 20 24° | 21 24° |
| 22 22° | 23 20° | 24 18° | 25 22° | 26 24° | 27  22° | 28 22° |
| 29 20° | 30  20° |
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Temperatures trend during September in Bratislava
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Partly cloudy | 30° /16° | 0.1 mm | 8 | |
| 2 Sept. | Sunny | 31° /17° | 0 mm | 8 | |
| 3 Sept. | Patchy light rain with thunder | 30° /17° | 0.6 mm | 7 | |
| 4 Sept. | Sunny | 29° /16° | 0 mm | 8 | |
| 5 Sept. | Partly cloudy | 29° /16° | 0 mm | 8 | |
| 6 Sept. | Sunny | 27° /15° | 0.4 mm | 7 | |
| 7 Sept. | Sunny | 30° /15° | 0 mm | 8 | |
| 8 Sept. | Sunny | 29° /16° | 0 mm | 8 | |
| 9 Sept. | Sunny | 27° /15° | 11.6 mm | 6 | |
| 10 Sept. | Sunny | 25° /14° | 0 mm | 6 | |
| 11 Sept. | Sunny | 27° /14° | 0.1 mm | 7 | |
| 12 Sept. | Sunny | 24° /13° | 6.2 mm | 6 | |
| 13 Sept. | Partly cloudy | 18° /12° | 26 mm | 5 | |
| 14 Sept. | Overcast | 16° /9° | 17 mm | 4 | |
| 15 Sept. | Partly cloudy | 18° /11° | 32.7 mm | 5 | |
| 16 Sept. | Partly cloudy | 19° /12° | 11.5 mm | 5 | |
| 17 Sept. | Sunny | 23° /12° | 0.3 mm | 6 | |
| 18 Sept. | Partly cloudy | 26° /14° | 0 mm | 7 | |
| 19 Sept. | Light rain shower | 22° /14° | 3.4 mm | 5 | |
| 20 Sept. | Sunny | 24° /12° | 0 mm | 7 | |
| 21 Sept. | Patchy rain possible | 24° /13° | 0 mm | 6 | |
| 22 Sept. | Patchy rain possible | 22° /12° | 0 mm | 6 | |
| 23 Sept. | Overcast | 20° /12° | 0 mm | 5 | |
| 24 Sept. | Overcast | 18° /13° | 1.2 mm | 5 | |
| 25 Sept. | Patchy rain possible | 22° /12° | 0.1 mm | 5 | |
| 26 Sept. | Sunny | 24° /14° | 0 mm | 7 | |
| 27 Sept. | Cloudy | 22° /14° | 0.4 mm | 5 | |
| 28 Sept. | Sunny | 22° /12° | 0 mm | 6 | |
| 29 Sept. | Sunny | 20° /10° | 0 mm | 6 | |
| 30 Sept. | Light rain | 20° /9° | 0.8 mm | 5 | |
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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.
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.
What to pack to Bratislava in September?
As you prepare for your trip to Bratislava in September, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Bratislava, during September, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Warm Clothing: Sweaters, hoodies, long pants
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Accessories
- Sunglasses: For sun protection
- Sun Hats: Wide-brimmed hats for sun protection in warm weather
- Scarves: To protect you from the cold wind
- Gloves/Mittens: Essential for cold weather
- Warm Hats: Warm hats for insulation in cold weather
- Umbrellas/Raincoats: For rainy days
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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