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.

Best time to visit Syros

Q: When is the best time to visit Syros?

The best time to visit Syros (Ermoupolis) is May, June, July, August and September based on the following average weather conditions. Maximum daytime temperature = 22 - 30°C. Daily hours of sunshine = 10 hours or more.

Q: 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.

Q: 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.

Q: When is the sea warmest in Syros?

The sea is usually at its warmest in Ermoupolis, Syros in August when the water temperature reaches 24°C.

Find the best time to visit Syros and plan your perfect trip in 2025/2026. Get holiday inspiration, weather guides, travel advice and find great deals.

Syros by month

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

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Destination

When is the best time to visit Syros?

The best time to visit Syros (Ermoupolis) is May, June, July, August and September based on the following average weather conditions.

Maximum daytime temperature = 22 - 30°C [remove]
Daily hours of sunshine = 10 hours or more [remove]

Change the criteria to reflect your weather preferences.

0.5
Jan
1
Feb
1.5
Mar
3
Apr
5
May
5
Jun
5
Jul
5
Aug
5
Sep
4
Oct
1.5
Nov
0.5
Dec

Change criteria

Max Day Temperature (°C)

13
Jan
13
Feb
15
Mar
18
Apr
22
May
26
Jun
28
Jul
27
Aug
25
Sep
21
Oct
18
Nov
15
Dec

Hours of Sunshine (daily)

4
Jan
5
Feb
7
Mar
8
Apr
10
May
13
Jun
14
Jul
13
Aug
10
Sep
7
Oct
5
Nov
4
Dec

Best time to visit

Destination

Daytime temperature

Sunshine hours

Sea temperature

Monthly rainfall

Days with some rain

Heat & humidity

The weather guide for Syros, represented by Ermoupolis, (Ermoupolis) 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.

Metric (°C / mm) | Imperial (°F / inches)

More about Syros

Explore our complete guide to Syros with the latest travel advice for travellers and holidaymakers including official updates and local travel tips for Syros.

Essential travel guide
Travel guidance
Travel health
Travel features
Top travel deals
FAQs

Syros travel guide - essential info

Below is a beginner's guide to Syros with essential travel facts such as dominant language spoken, typical flight time from the UK and the local currency. You can also check whether visas are required and what plug adapter you need to pack.

Syros - quick facts
Flight time^✝	8.5 hours
Time difference	UK +2 hours
Language(s)	Greek
Currency	Euro
Electricity	C + F plug (230V)
Driving side	Right

Why visit Syros?

Considering a holiday to the Syros? Here are some of the very good reasons it makes such a wonderful holiday destination such as for its beaches to ensure you get the most out of your 2025/2026 escape.

Beaches

✝ = Typical flight time from the UK.

Travelling to Syros?
Hotels eSIMs Travel insurance

Syros travel guidance

Check the latest travel guidance and advice on visiting Syros from official government sources (in english) from around the world including entry requirements and travel restrictions.

UK traveller advice for Syros - UK FCDO
Irish traveller advice for Syros - Department of Foreign Affairs, Ireland
Safe travel advisories for Syros - Ministry of Foreign Affairs, New Zealand
Smarter traveller advice for Syros - Department of Foreign Affairs, Australia

Learn more about the current safety and security risks from terrorism, natural disasters and more. Read about the local laws and customs to consider when travelling around Syros.

Note: UK FCDO - UK Foreign, Commonwealth & Development Office

Syros travel health

Find out more about staying safe when travelling to Syros with the latest guidance on required vaccinations and recommended medication to take with you.

Vaccines & medicines for Syros - CDC
Health & vaccinations for Syros - TravelHealthPro, NaTHNac
How to stay safe & healthy in Syros - Fit for Travel, Public Health Scotland

Check out the general travel tips for staying safe and healthy in Syros, risks of preventable diseases and what to pack.

Note: CDC - Centers for Disease Control and Prevention

Syros travel features

Do you want to learn more about Syros? Read our latest features covering travel tips and insider destination guides on where to go and what to do in Syros.

We don't currently have any travel features on Syros. Discover more about holiday destinations around the world with this selection of general travel articles.

Syros FAQs

Read our frequently asked questions about travelling to Syros including the current entry restrictions, driving side, electrical plugs used and much more.

Which month has the most rain in Syros?

In terms of rainfall, January is usually the wettest month in Ermoupolis, Syros with 0mm on average. There are normally no days in January with some rain.

When is it sunniest in Syros?

The sunniest time of year in Ermoupolis, Syros is normally January with bright sunshine on average for 0% of daylight hours; that's 0 hours of sunshine per day.

When is the sea warmest in Syros?

The sea is usually at its warmest in Ermoupolis, Syros in January when the water temperature reaches 0°C.

What is the flight time to Syros from the UK?

The flight time to Syros from the UK is typically 8.5 hours.

What is the time difference between Syros and the UK?

The time difference between Syros and the UK is UK time+2 hours.

What is the main language spoken in Syros?

The main language spoken in Syros is Greek.

Learn a language for Syros with Rosetta Stone^*.

What is the currency in Syros?

The currency in Syros is the Euro (EUR).

Send money to Syros with TransferGo^* and XE Money Transfers^*.

Which plugs are used in Syros?

Syros uses electrical plug type C + F (230 Volts).

Which side of the road do they drive on in Syros?

They drive on the right side of the road in Syros.

Find out more about driving in Greece with RAC^*, International Drivers Association^* and Halfords^*.

Syros travel deals

Holidays to Syros

Check out the latest deals, discount codes and special offers on holidays to Syros in 2025/2026. Pay low deposits and save with last minute holiday availability and free kids places.