Syros weather

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Usually in September
- 25
- 19
- 10
Weather by month
Now Today
- 26
- 12
5-day forecast

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The weather guide for Syros shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by MeteoBlue. Find out more about our data sources.

Which is the hottest month in Syros?

The hottest time of year in Ermoupolis, Syros is normally July. Expect maximum daytime temperatures to reach 28°C with moderate heat and humidity.

Which month has the most rain in Syros?

In terms of rainfall, December is usually the wettest month in Ermoupolis, Syros with 91mm on average. There are normally 11 days in December with some rain.

When is it sunniest in Syros?

The sunniest time of year in Ermoupolis, Syros is normally July with bright sunshine on average for 93% of daylight hours; that's 14 hours of sunshine per day.