Alonissos weather in August 2025

Expect 28°C daytime maximum temperatures in the shade with on average 12 hours of sunshine per day in Alonissos in August. Check more long-term weather averages for Alonissos in August before you book your next holiday to Greece in 2025/2026.

  • 28°C maximum daytime temperature in August in Alonissos28
    28°C max day temperature
  • 12 hours of sunshine per day
  • 3 days with some rainfall in August in Alonissos3
    3 days with some rainfall
  • 19°C minimum night-time temperature in August in Alonissos19
    19°C min night temperature
  • 14 hours of daylight per day in August in Alonissos14
    14 hours of daylight per day
  • Moderate heat & humidity in August in AlonissosM
    Moderate heat & humidity
  • 29 mm monthly rainfall in August in Alonissos29
    29 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in August in Alonissos8
    8 (Very High) UV index
  • 26°C sea temperature in August in Alonissos26
    26°C sea temperature

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The August weather guide for Greece (Alonissos) 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 Alonissos in August?

Daytime temperatures usually reach 28°C in Alonissos in August with moderate heat and humidity, falling to 19°C at night.

How sunny is it in Alonissos in August?

There are normally 12 hours of bright sunshine each day in Alonissos in August - that's 87% of daylight hours.

How warm is the sea around Alonissos in August?

The average sea temperature around Alonissos in August is 26°C.

Does it ever rain in Alonissos in August?

There are usually 3 days with some rain in Alonissos in August and the average monthly rainfall is 29mm.

Alonissos August sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 05:25 19:36
Saturday, 16th August 2025 05:39 19:18
Sunday, 31st August 2025 05:52 18:57

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