World sea water temperatures

Water temperature in Syros

This data the coastal Syros sea water temperature today, tomorrow and the upcoming days. Besides, you can also get information about the weather and surf forecast, as well as the data on sunrise / sunset and moonrise / moonset at a given point on any given day.

Current sea temperature in Syros

Water temperature in Syros today is 24.8°C. Based on our historical data over a period of ten years, the warmest water in this day in Syros was recorded in 2022 and was 26.2°C, and the coldest 23.8°C. Sea water temperature in Syros is expected to drop to 24.3°C in the next 10 days. September average water temperature in Syros is 24.2°C, the minimum temperature is 21.5°C, and the maximum is 26.8°C.

The swimming season in Syros lasts from June to November. During those months, Syros water temperature does not drop below 20°C and therefore suitable for comfortable swimming. The average water temperature in Syros in winter reaches 16.5°C, in spring 17.1°C, in summer the average temperature rises to 24°C, and in autumn it is 21.8°C.

Syros water temperature now


5 September 2025
today temp
24.8°C
4 September 2025
yesterday temp
24.9°C


The sea salinity in Syros is 38.98‰, and the average salinity of the World Ocean is 35‰.

Surf Forecast in Syros for today

Another important indicators for a comfortable holiday on the beach are the presence and height of the waves, as well as the speed and direction of the wind. Please find below data on the swell size for Syros. We calculate the swell size based on the mean wave height (trough to crest) of each third highest wave. For more information on surf forecasts for the next ten days, please visit sea state forecast Syros. Data in table shown for 6 September 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)

0-3 h3-6 h6-9 h9-12 h
3' 7"3' 9"4' 1"4' 1"
1.1 m1.14 m1.24 m1.25 m
12-15 h15-18 h18-21 h21-24 h
3' 10"3' 1"2' 9"2' 11"
1.17 m0.95 m0.83 m0.9 m

Surf report in Syros

Syros wave height and direction

Syros weather forecast

Syros wind speed and direction

Current temperature and weather

Data in a table show Syros temperature today (6 September 2025). For more information and forecast for a few days, go to the weather forecast Syros.

0-3 h3-6 h6-9 h9-12 h
24.2°C23.3°C22.6°C23.3°C
12-15 h15-18 h18-21 h21-24 h
23.6°C25.2°C25.6°C25°C

You may also be interested in other sections of our site for Syros: Sunrise and Sunset, Tides

Syros water temperature by month

These figures shows the average, minimum and maximum monthly sea temperature in Syros. In addition to the table values, the graph below displays of changes average surface temperature during the year. Values are calculated based on the data over the past 10 years. Using them, you can check the water temperature in Syros on any day of this period that interests you. Click on the month link and you will see a table for each day, or alternatively you can view the temperature curve of the month and select 2 different years you want to compare, either in a table or as a curve

MonthAvrMinMax
January16.3°C14.3°C18.2°Ccold
Sea water temperature in Syros in January
February15.8°C14.1°C17.3°Ccold
Sea water temperature in Syros in February
March15.8°C14.3°C18.1°Ccold
Sea water temperature in Syros in March
April16.6°C14.7°C19.8°Ccold
Sea water temperature in Syros in April
May18.9°C16.2°C22.5°Ccold
Sea water temperature in Syros in May
June22.5°C19.1°C26.9°Cwarm
Sea water temperature in Syros in June
July24.4°C22.1°C27.2°Cwarm
Sea water temperature in Syros in July
August25°C22.7°C27.3°Chot
Sea water temperature in Syros in August
September24.2°C21.5°C26.8°Cwarm
Sea water temperature in Syros in September
October21.9°C18.6°C24.7°Cwarm
Sea water temperature in Syros in October
November19.4°C16.6°C23.1°Ccold
Sea water temperature in Syros in November
December17.4°C15.5°C20.3°Ccold
Sea water temperature in Syros in December

Chart monthly average water temperature in Syros

Water temperature in Syros

Where is the warmest sea water in the world?

If you want to plan a vacation on the beach and enjoy the warm sea, choose the day of the year, region and the minimum comfortable sea/ocean temperature that interests you. As a result, you will get a list of countries and cities in which the average sea temperature or maximum temperature on this day over the past 10 years exceeds your chosen value

Region
Date (day and month)
Water temperature: min 16°C
 Average temperature  Maximum temperature

Nearby beaches and cities

The nearest beaches and cities from Syros with the water temperature today, as well as the air temperature and the state of the weather during the day and the average wave height for today

WaterWeatherWave
Ermoupoli24.8°C25°C1.07 m
Galissas24.8°C25°C1.09 m
Tinos24.7°C25°C1.08 m
Agios Stefanos24.7°C25°C1.12 m
Platis Yalos24.8°C25°C1.12 m
Elia Beach24.8°C25°C1.12 m
Naoussa24.6°C25°C0.86 m
Parikia24.6°C25°C1.01 m
Agia Anna Beach24.7°C25°C1.1 m
Kalafati24.7°C25°C1.1 m

Syros photo gallery

  • Sunrise over Vari Syros

If you have interesting photos of this place, you can upload them here. Photos will be available to all users after verification by the moderator.

Other names for Syros

Siros, Syra

Vote for Cyclades best beach

Sandy beach

Current rating: 5,0 (1 votes cast)

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[1] - The "Blue Flag" is awarded to beaches which fulfill a number of criteria, including: the quality of the bathing water, which must be in accordance with the relevant European Union Directive environmental education and information and beach area management and safety.

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Our report for Syros is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.

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