September weather forecastBratislava, Slovakia
September
Weather in September
September in Bratislava welcomes the autumnal equinox, characterized by shedding leaves, milder temperatures, and a distinctive charm. As the temperature cools down to a comfortable 21.2°C (70.2°F), it becomes perfect for outdoor activities, including cycling and picnics in the city's parks. Crisp morning air combined with the golden glow of the setting sun paints a picturesque scene. Despite frequent rainfall, the city's charm seems to peak with the arrival of fall.Temperature
Bratislava's progression into September involves a drop in the average high-temperature, receding from a warm 27.3°C (81.1°F) in August to a pleasant 21.2°C (70.2°F). Bratislava records a steady low-temperature average of 12.1°C (53.8°F) during September.Humidity
In September, the average relative humidity in Bratislava, Slovakia, is 67%.Rainfall
In Bratislava, in September, during 10.1 rainfall days, 32mm (1.26") of precipitation is typically accumulated. Throughout the year, in Bratislava, there are 132.9 rainfall days, and 403mm (15.87") of precipitation is accumulated.Snowfall
In Bratislava, snow does not fall in May through September.Daylight
The average length of the day in September is 12h and 35min.On the first day of the month, sunrise is at 06:10 and sunset at 19:32. On the last day of September, in Bratislava, sunrise is at 06:50 and sunset at 18:32 CEST.
Sunshine
In September, the average sunshine is 9.4h.UV index
The average daily maximum UV index in September in Bratislava is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: The UV index of 4 during September translates into the following guidance:
Put precautions into practice - Protective measures against sun-induced damage are advised. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Bratislava, Slovakia
- Average high temperature in September: 21.2°C
The warmest month (with the highest average high temperature) is August (27.3°C).
The month with the lowest average high temperature is January (2.2°C).
- Average low temperature in September: 12.1°C
The month with the highest average low temperature is August (16.1°C).
The coldest month (with the lowest average low temperature) is January (-2.7°C).
Average pressure in September
Bratislava, Slovakia
- Average pressure in September: 1018.1mbar
The month with the highest atmospheric pressure is December (1020.2mbar).
The month with the lowest atmospheric pressure is June (1014.9mbar).
Average wind speed in September
Bratislava, Slovakia
- Average wind speed in September: 11.7km/h
The windiest month (with the highest average wind speed) is February (15.4km/h).
The calmest month (with the lowest average wind speed) is August (10.7km/h).
Average humidity in September
Bratislava, Slovakia
- Average humidity in September: 67%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (61%).
Average rainfall in September
Bratislava, Slovakia
- Average rainfall in September: 32mm
The wettest month (with the highest rainfall) is June (57mm).
The driest month (with the least rainfall) is April (22mm).
Average rainfall days in September
Bratislava, Slovakia
- Average rainfall days in September: 10.1 days
The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is January (8.5 days).
Average snowfall in September
Bratislava, Slovakia
- Average snowfall in September: 0mm
The month with the highest snowfall is January (107mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in September
Bratislava, Slovakia
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Bratislava, Slovakia
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in September: 9h and 24min
The month with the most sunshine is August (Average sunshine: 11h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).
Average sunshine days in September
Bratislava, Slovakia
- Average sunshine days in September: 18.2 days
The month with the most sunshine days is October (20 days).
The month with the least sunshine days is May (12.2 days).
Average UV index in September
Bratislava, Slovakia
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Bratislava, Slovakia
- Average cloud cover in September: 32
The month with the most cloud cover is February (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 24).
Average visibility in September
Bratislava, Slovakia
- Average visibility in September: 10km
The months with the highest visibility are March, April, June, July, August and September (10km).
The month with the lowest visibility is January (8km).
