Oia weather in August 2025

Expect 27°C daytime maximum temperatures in the shade with on average 12 hours of sunshine per day in Oia in August. Check more long-term weather averages for Oia in August before you book your next holiday to Santorini in 2025/2026.

  • 27°C maximum daytime temperature in August in Oia27
    27°C max day temperature
  • 12 hours of sunshine per day
  • 1 day with some rainfall in August in Oia1
    1 day with some rainfall
  • 22°C minimum night-time temperature in August in Oia22
    22°C min night temperature
  • 13 hours of daylight per day in August in Oia13
    13 hours of daylight per day
  • Moderate heat & humidity in August in OiaM
    Moderate heat & humidity
  • 1 mm monthly rainfall in August in Oia1
    1 mm of monthly rainfall
  • UV (maximum) index 9 (Very High) in August in Oia9
    9 (Very High) UV index
  • 24°C sea temperature in August in Oia24
    24°C sea temperature

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The August weather guide for Santorini (Oia) 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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How hot is it in Oia in August?

Daytime temperatures usually reach 27°C in Oia in August with moderate heat and humidity, falling to 22°C at night.

How sunny is it in Oia in August?

There are normally 12 hours of bright sunshine each day in Oia in August - that's 92% of daylight hours.

How warm is the sea around Oia in August?

The average sea temperature around Oia in August is 24°C.

Does it ever rain in Oia in August?

There is usually 1 day with some rain in Oia in August and the average monthly rainfall is 1mm.

Oia August sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 05:25 19:24
Saturday, 16th August 2025 05:37 19:08
Sunday, 31st August 2025 05:49 18:48

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