Porto Heli weather in May 2025

Expect 75°F daytime maximum temperatures in the shade with on average 10 hours of sunshine per day in Porto Heli in May. Check more long-term weather averages for Porto Heli in May before you book your next holiday to Peloponnese in 2025/2026.

  • 75°F maximum daytime temperature in May in Porto Heli75
    75°F max day temperature
  • 10 hours of sunshine per day
  • 5 days with some rainfall in May in Porto Heli5
    5 days with some rainfall
  • 55°F minimum night-time temperature in May in Porto Heli55
    55°F min night temperature
  • 14 hours of daylight per day in May in Porto Heli14
    14 hours of daylight per day
  • No heat & humidity in May in Porto Heli0
    No heat & humidity
  • 0.8 inches monthly rainfall in May in Porto Heli0.8
    0.8 inches of monthly rainfall
  • UV (maximum) index 8 (Very High) in May in Porto Heli8
    8 (Very High) UV index
  • 66°F sea temperature in May in Porto Heli66
    66°F sea temperature

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Porto Heli by month

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The May 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)  |  Imperial (°F)

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How hot is it in Porto Heli in May?

Daytime temperatures usually reach 75°F in Porto Heli in May, falling to 55°F at night.

How sunny is it in Porto Heli in May?

There are normally 10 hours of bright sunshine each day in Porto Heli in May - that's 67% of daylight hours.

How warm is the sea around Porto Heli in May?

The average sea temperature around Porto Heli in May is 66°F.

Does it rain in Porto Heli in May?

There are usually 5 days with some rain in Porto Heli in May and the average monthly rainfall is 0.8 inches.

Porto Heli May sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st May 2025 05:32 19:17
Friday, 16th May 2025 05:18 19:30
Saturday, 31st May 2025 05:09 19:42

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