Opatija weather in August 2025

Expect 77°F daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Opatija in August. Check more long-term weather averages for Opatija in August before you book your next holiday to Croatia in 2025/2026.

  • 77°F maximum daytime temperature in August in Opatija77
    77°F max day temperature
  • 8 hours of sunshine per day
  • 13 days with some rainfall in August in Opatija13
    13 days with some rainfall
  • 55°F minimum night-time temperature in August in Opatija55
    55°F min night temperature
  • 14 hours of daylight per day in August in Opatija14
    14 hours of daylight per day
  • Low heat & humidity in August in OpatijaL
    Low heat & humidity
  • 4.6 inches monthly rainfall in August in Opatija4.6
    4.6 inches of monthly rainfall
  • UV (maximum) index 7 (High) in August in Opatija7
    7 (High) UV index
  • 75°F sea temperature in August in Opatija75
    75°F sea temperature

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The August weather guide for Croatia (Opatija) 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)  |  Imperial (°F)

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More about Croatia

How hot is it in Opatija in August?

Daytime temperatures usually reach 77°F in Opatija in August with low heat and humidity, falling to 55°F at night.

How sunny is it in Opatija in August?

There are normally 8 hours of bright sunshine each day in Opatija in August - that's 60% of daylight hours.

How warm is the sea around Opatija in August?

The average sea temperature around Opatija in August is 75°F.

Does it rain in Opatija in August?

There are usually 13 days with some rain in Opatija in August and the average monthly rainfall is 4.6 inches.

Opatija August sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 04:47 19:30
Saturday, 16th August 2025 05:05 19:08
Sunday, 31st August 2025 05:23 18:42

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