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 81°F daytime maximum temperatures in the shade with on average 13 hours of sunshine per day in Syros in August. Check more long-term weather averages for Syros in August before you book your next holiday to Syros in 2025/2026.

81
81°F max day temperature
13
13 hours of sunshine per day
1
1 day with some rainfall
70
70°F min night temperature
14
14 hours of daylight per day
M
Moderate heat & humidity
0.1
0.1 inches of monthly rainfall
9
9 (Very High) UV index
75
75°F sea temperature

More about Syros

Syros by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Syros

TUI: up to 7% off holidays booked online

Sale

Book online with TUI & save up to 7% on holidays
FREE child places available for select holidays
Pay £0 deposits with direct debit & spread the cost

Go to TUI deal >>

View all TUI offers

TUI deal finder

Destination

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) | Imperial (°F)

More about Greece

How hot is it in Syros in August?

Daytime temperatures usually reach 81°F in Ermoupolis, Syros in August with moderate heat and humidity, falling to 70°F 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 75°F.

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 0.1 inches.

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.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec