Syros weather in July 2025

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

  • 28°C maximum daytime temperature in July in Syros (Ermoupolis)28
    28°C max day temperature
  • 14 hours of sunshine per day
  • 1 day with some rainfall in July in Syros (Ermoupolis)1
    1 day with some rainfall
  • 22°C minimum night-time temperature in July in Syros (Ermoupolis)22
    22°C min night temperature
  • 14 hours of daylight per day in July in Syros (Ermoupolis)14
    14 hours of daylight per day
  • Moderate heat & humidity in July in Syros (Ermoupolis)M
    Moderate heat & humidity
  • 2 mm monthly rainfall in July in Syros (Ermoupolis)2
    2 mm of monthly rainfall
  • UV (maximum) index 10 (Very High) in July in Syros (Ermoupolis)10
    10 (Very High) UV index
  • 23°C sea temperature in July in Syros (Ermoupolis)23
    23°C sea temperature

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

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

How sunny is it in Syros in July?

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

How warm is the sea around Syros in July?

The average sea temperature around Ermoupolis, Syros in July is 23°C.

Does it ever rain in Syros in July?

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

Syros July sunrise & sunset times

Browse the sunrise and sunset times for Syros in July 2025. Select a month to view Syros sunrise and sunset times for the next 12 months. The Syros sunrise and sunset times shown below are for Ermoupolis.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Tuesday, 1st July 2025 05:03 19:45
Wednesday, 16th July 2025 05:12 19:40
Thursday, 31st July 2025 05:24 19:29

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