Bratislava Weather in September
September in Bratislava averages 22°C (72°F) during the day and 12°C (54°F) at night. Quite a bit of rainfall is typical this month, with around 74 mm (2.9 in) on average. An umbrella is a good idea.
Rainfall in Bratislava in September
Based on our climate data of the past 30 years, about 10 days of rain are anticipated, with 74 mm (2.9 in) on average. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.
Temperature in Bratislava in September
Bratislava in September is worth a visit. The temperature is perfect, with 22°C (72°F) during the day and 12°C (54°F) at night. This kind of day-to-night contrast is typical for this time of year. Nights cool down to 12°C (54°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.
Sunshine in Bratislava in September
Expect a lot of sunshine this month, with about 205 hours of sun. These sunny conditions add to the overall experience.
Wind Speed in Bratislava in September
September sees wind speeds averaging 2 m/s (4 knots). You'll typically experience pleasant light breezes that move leaves slightly and feel refreshing. As an average, expect variation from very calm days to periods with more apparent air movement.So this is a great month to visit if you prefer dry days with pleasant temperatures.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Slovakia, check out our Bratislava's climate page.
Bratislava Temperature in September
Min Temperature
12°C (54°F)
Max Temperature
22°C (72°F)
Chance of Rain
32%
Precipitation
74 mm (2.9 in)
Rainy days
10 days
Humidity
73%
Windspeed
2 m/s (4 knots)
Sunshine
205 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Bratislava typically drop from around 23°C (73°F) at the start of September to approximately 19°C (66°F) by the end. Nights are cool, with lows typically ranging from 9°C (48°F) to 14°C (57°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Bratislava in September
Browse day-by-day weather records for Bratislava spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Bratislava historical weather extremes in September
Based on 49 years of weather observations in Bratislava between 1976 and 2025, these are the recorded extremes.
- Bratislava recorded its highest September temperature of 33°C (91°F) on September 3, 2024.
- The lowest daytime temperature in September was 9°C (48°F), recorded on September 13, 2024.
- The lowest overnight temperature recorded in September was -1°C (30°F) (September 29, 1977).
Best Places in Slovakia in September
Find out more about the weather in Slovakia and which places have the best travel conditions in this month. See all of Slovakia in September →
perfect weather
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tolerable
unpleasant
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What to Wear in Bratislava in September
For Bratislava in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Rain is likely on several days, so bring a good rain jacket. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.What To Do in Bratislava in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Slovakia, check out our Bratislava's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Bratislava climate overview or explore weather in Slovakia.
