Water temperature in Sifnos

This data the coastal Sifnos 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 Sifnos

Water temperature in Sifnos today is 23.7°C. Based on our historical data over a period of ten years, the warmest water in this day in the Aegean Sea near Sifnos was recorded in 2024 and was 25°C, and the coldest was recorded in 2007 at 22.2°C. Sea water temperature in Sifnos is expected to drop to 23°C in the next 10 days. September average water temperature in Sifnos is 24.3°C, the minimum temperature is 21.8°C, and the maximum is 26.7°C.

The swimming season in Sifnos lasts from May to November. During those months, Sifnos water temperature does not drop below 20°C and therefore suitable for comfortable swimming. The average water temperature in Sifnos in winter reaches 16.7°C, in spring 17.3°C, in summer the average temperature rises to 24.2°C, and in autumn it is 22.1°C.

Sifnos water temperature now

The sea salinity in Sifnos is 39.33‰, and the average salinity of the World Ocean is 35‰.

Surf Forecast in Sifnos 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 Sifnos. 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 Sifnos. Data in table shown for 26 September 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)

Surf report in Sifnos

Sifnos weather forecast

Current temperature and weather

Data in a table show Sifnos temperature today (26 September 2025). For more information and forecast for a few days, go to the weather forecast Sifnos.

0-3 h	3-6 h	6-9 h	9-12 h
23.5°C	22.8°C	22°C	22°C

12-15 h	15-18 h	18-21 h	21-24 h
22.2°C	22.3°C	22.8°C	22.4°C

Sifnos water temperature by month

These figures shows the average, minimum and maximum monthly sea temperature in Sifnos. 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 Sifnos 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

Chart monthly average water temperature in Sifnos

The nearest beaches and cities from Sifnos 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

	Water	Weather		Wave
Kamares	23.7°C	22°C		1.79 m
Vathi	23.7°C	22°C		1.77 m
Serifos	23.7°C	22°C		1.69 m
Kimolos	23.8°C	22°C		1.63 m
Pollonia	23.9°C	22°C		1.47 m
Antiparos	23.4°C	23°C		1.72 m
Adamas	24.1°C	22°C		1.46 m
Paros	23.3°C	23°C		1.57 m
Parikia	23.3°C	23°C		1.57 m
Kleftiko Beach	24.3°C	22°C		1.52 m

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Our report for Sifnos 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.