Porto Heli weather in August 2025

Expect 31°C daytime maximum temperatures in the shade with on average 12 hours of sunshine per day in Porto Heli in August. Check more long-term weather averages for Porto Heli in August before you book your next holiday to Peloponnese in 2025/2026.

  • 31°C maximum daytime temperature in August in Porto Heli31
    31°C max day temperature
  • 12 hours of sunshine per day
  • 2 days with some rainfall in August in Porto Heli2
    2 days with some rainfall
  • 20°C minimum night-time temperature in August in Porto Heli20
    20°C min night temperature
  • 14 hours of daylight per day in August in Porto Heli14
    14 hours of daylight per day
  • High heat & humidity in August in Porto HeliH
    High heat & humidity
  • 7 mm monthly rainfall in August in Porto Heli7
    7 mm of monthly rainfall
  • UV (maximum) index 9 (Very High) in August in Porto Heli9
    9 (Very High) UV index
  • 26°C sea temperature in August in Porto Heli26
    26°C sea temperature

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The August weather guide for Peloponnese (Porto Heli) 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 Porto Heli in August?

Daytime temperatures usually reach 31°C in Porto Heli in August with high heat and humidity, falling to 20°C at night.

How sunny is it in Porto Heli in August?

There are normally 12 hours of bright sunshine each day in Porto Heli in August - that's 85% of daylight hours.

How warm is the sea around Porto Heli in August?

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

Does it ever rain in Porto Heli in August?

There are usually 2 days with some rain in Porto Heli in August and the average monthly rainfall is 7mm.

Porto Heli August sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 05:32 19:35
Saturday, 16th August 2025 05:45 19:18
Sunday, 31st August 2025 05:57 18:58

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