Bratislava
Slovakia
Long-term weather forecast
Long-term weather forecast
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September weather forecast and Climate
Bratislava, Slovakia

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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
  • The 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).

  • The 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).

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  • The 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%).

  • The 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).

  • The 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).

  • The average daylight in September: 13h

Months with the longest days are June and July (Average daylight: 16h).
The month with shortest days is December (Average daylight: 8h).

  • The 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).

  • The 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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