Ostrava weather in August 2025

Expect 23°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Ostrava in August. Check more long-term weather averages for Ostrava in August before you book your next holiday to Czech Republic in 2025/2026.

  • 23°C maximum daytime temperature in August in Ostrava23
    23°C max day temperature
  • 7 hours of sunshine per day
  • 14 days with some rainfall in August in Ostrava14
    14 days with some rainfall
  • 12°C minimum night-time temperature in August in Ostrava12
    12°C min night temperature
  • 14 hours of daylight per day in August in Ostrava14
    14 hours of daylight per day
  • No heat & humidity in August in Ostrava0
    No heat & humidity
  • 87 mm monthly rainfall in August in Ostrava87
    87 mm of monthly rainfall
  • UV (maximum) index 6 (High) in August in Ostrava6
    6 (High) UV index

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The August weather guide for Czech Republic (Ostrava) 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.

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

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More about the Czech Republic

How hot is it in Ostrava in August?

Daytime temperatures usually reach 23°C in Ostrava in August, falling to 12°C at night.

How sunny is it in Ostrava in August?

There are normally 7 hours of bright sunshine each day in Ostrava in August - that's 45% of daylight hours.

Does it rain in Ostrava in August?

There are usually 14 days with some rain in Ostrava in August and the average monthly rainfall is 87mm.

Ostrava August sunrise & sunset times

Browse the sunrise and sunset times for Ostrava in August 2025. Select a month to view Ostrava sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 04:17 19:29
Saturday, 16th August 2025 04:39 19:03
Sunday, 31st August 2025 05:01 18:32

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