September weather forecast and climate
Bratislava, Slovakia

The road bridge leading into the big city of Bratislava in Slovakia, taken from above
The road bridge leading into the big city of Bratislava in Slovakia, taken from above

What is the temperature in September in Bratislava?

In September, the average high-temperature is 21.7°C (71.1°F), and the average low-temperature is 11°C (51.8°F).

What is the average humidity in September in Bratislava?

In Bratislava, Slovakia, the average relative humidity in September is 73%.

How many days does it rain in September in Bratislava?

In Bratislava, during September, the rain falls for 9 days and regularly aggregates up to 55mm (2.2") of precipitation.

What is the average UV index in September in Bratislava?

The average UV index in September in Bratislava, Slovakia, is 4.
Average temperature in September - Bratislava, Slovakia
  • Average high temperature in September: 21.7°C

The warmest month (with the highest average high temperature) is July (27.5°C).
The month with the lowest average high temperature is January (2.7°C).

  • Average low temperature in September: 11°C

The month with the highest average low temperature is July (15.4°C).
The coldest month (with the lowest average low temperature) is January (-3.4°C).

Average humidity in September - Bratislava, Slovakia
  • Average humidity in September: 73%

The month with the highest relative humidity is December (85%).
Months with the lowest relative humidity are April and July (64%).

Average rainfall in September - Bratislava, Slovakia
  • Average rainfall in September: 55mm

The wettest month (with the highest rainfall) is August (59mm).
The driest month (with the lowest rainfall) is April (34mm).

Average rainfall days in September - Bratislava, Slovakia
  • Average rainfall days in September: 9 days

Months with the highest number of rainy days are January, November and December (14 days).
The month with the lowest number of rainy days is September (9 days).

Average daylight in September / Average sunshine in September - Bratislava, Slovakia
  • Average daylight in September: 12.6h

The month with the longest days is June (Average daylight: 16h).
The month with shortest days is December (Average daylight: 8.4h).

  • Average sunshine in September: 6.9h

The month with most sunshine is June (Average sunshine: 9h).
The month with least sunshine is December (Average sunshine: 1.5h).

Average UV index in September - Bratislava, Slovakia
  • Average UV index in September: 4

Months with the highest UV index are June and July (UV index 7).
Months with the lowest UV index are January, November and December (UV index 1).

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