Syros weather in August 2025

Q: How hot is it in Syros in August?

Daytime temperatures usually reach 27°C in Ermoupolis, Syros in August with moderate heat and humidity, falling to 21°C at night.

Q: How sunny is it in Syros in August?

There are normally 13 hours of bright sunshine each day in Ermoupolis, Syros in August - that's 92% of daylight hours.

Q: How warm is the sea around Syros in August?

The average sea temperature around Ermoupolis, Syros in August is 24°C.

Q: Does it ever rain in Syros in August?

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

Expect 27°C daytime maximum temperatures in the shade with on average 13 hours of sunshine per day in Syros in August based on long-term weather averages. There is usually 1 day with some rainfall and 2 mm of average monthly rainfall in August.

27
27°C max day temperature
13
13 hours of sunshine per day
1
1 day with some rainfall
21
21°C min night temperature
14
14 hours of daylight per day
M
Moderate heat & humidity
2
2 mm of monthly rainfall
9
9 (Very High) UV index
24
24°C sea temperature

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The August 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)

More about Greece

How hot is it in Syros in August?

Daytime temperatures usually reach 27°C in Ermoupolis, Syros in August with moderate heat and humidity, falling to 21°C at night.

How sunny is it in Syros in August?

There are normally 13 hours of bright sunshine each day in Ermoupolis, Syros in August - that's 92% of daylight hours.

How warm is the sea around Syros in August?

The average sea temperature around Ermoupolis, Syros in August is 24°C.

Does it ever rain in Syros in August?

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

Syros August sunrise & sunset times

Browse the sunrise and sunset times for Syros in August 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.

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