Galissas weather in July 2025

Expect 28°C daytime maximum temperatures in the shade with on average 14 hours of sunshine per day in Galissas in July. Check more long-term weather averages for Galissas in July before you book your next holiday to Syros in 2025/2026.

  • 28°C maximum daytime temperature in July in Galissas28
    28°C max day temperature
  • 14 hours of sunshine per day
  • 1 day with some rainfall in July in Galissas1
    1 day with some rainfall
  • 22°C minimum night-time temperature in July in Galissas22
    22°C min night temperature
  • 14 hours of daylight per day in July in Galissas14
    14 hours of daylight per day
  • Moderate heat & humidity in July in GalissasM
    Moderate heat & humidity
  • 2 mm monthly rainfall in July in Galissas2
    2 mm of monthly rainfall
  • UV (maximum) index 10 (Very High) in July in Galissas10
    10 (Very High) UV index
  • 23°C sea temperature in July in Galissas23
    23°C sea temperature

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The July weather guide for Syros, represented by Galissas, (Galissas) 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 Galissas in July?

Daytime temperatures usually reach 28°C in Galissas in July with moderate heat and humidity, falling to 22°C at night.

How sunny is it in Galissas in July?

There are normally 14 hours of bright sunshine each day in Galissas in July - that's 93% of daylight hours.

How warm is the sea around Galissas in July?

The average sea temperature around Galissas in July is 23°C.

Does it ever rain in Galissas in July?

There is usually 1 day with some rain in Galissas in July and the average monthly rainfall is 2mm.

Galissas July sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Tuesday, 1st July 2025 05:03 19:45
Wednesday, 16th July 2025 05:12 19:41
Thursday, 31st July 2025 05:24 19:29

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