Slovakia weather in September 2025

Expect daytime maximum temperatures of 21°C in Slovakia in September based on long-term weather averages. There are 6 hours of sunshine per day on average with typically 44 mm of rainfall in the month.

  • 21°C maximum daytime temperature in September in Slovakia (Bratislava)21
    21°C max day temperature
  • 6 hours of sunshine per day
  • 9 days with some rainfall in September in Slovakia (Bratislava)9
    9 days with some rainfall
  • 11°C minimum night-time temperature in September in Slovakia (Bratislava)11
    11°C min night temperature
  • 13 hours of daylight per day in September in Slovakia (Bratislava)13
    13 hours of daylight per day
  • No heat & humidity in September in Slovakia (Bratislava)0
    No heat & humidity
  • 44 mm monthly rainfall in September in Slovakia (Bratislava)44
    44 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in September in Slovakia (Bratislava)4
    4 (Moderate) UV index

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The September weather guide for Slovakia (Bratislava) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Top Slovakia destinations

Below are average maximum temperatures at popular countries, regions and places in Slovakia in September. Select a holiday destination to see more weather parameters.

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Metric (°C / mm)  |  Imperial (°F / inches)

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How hot is it in Slovakia in September?

Daytime temperatures usually reach 21°C in Bratislava, Slovakia in September, falling to 11°C at night.

How sunny is it in Slovakia in September?

There are normally 6 hours of bright sunshine each day in Bratislava, Slovakia in September - that's 47% of daylight hours.

Does it rain in Slovakia in September?

There are usually 9 days with some rain in Bratislava, Slovakia in September and the average monthly rainfall is 44mm.

Slovakia September sunrise & sunset times

Browse the sunrise and sunset times for Slovakia in September 2025. Select a month to view Slovakia sunrise and sunset times for the next 12 months. The Slovakia sunrise and sunset times shown below are for Bratislava.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:09 18:33
Monday, 15th September 2025 05:29 18:04
Tuesday, 30th September 2025 05:49 17:33

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