Water temperature in Heraklion

This data the coastal Heraklion 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 Heraklion

Water temperature in Heraklion today is 25°C. Based on our historical data over a period of ten years, the warmest water in this day in the Aegean Sea near Heraklion was recorded in 2020 and was 26°C, and the coldest was recorded in 2008 at 23.9°C. Sea water temperature in Heraklion is expected to drop to 24.4°C in the next 10 days. September average water temperature in Heraklion is 25.5°C, the minimum temperature is 23.1°C, and the maximum is 27.5°C.

The swimming season in Heraklion lasts from May to November. During those months, Heraklion water temperature does not drop below 20°C and therefore suitable for comfortable swimming. The average water temperature in Heraklion in winter reaches 17°C, in spring 17.5°C, in summer the average temperature rises to 25.1°C, and in autumn it is 23.2°C.

Heraklion water temperature now

The sea salinity in Heraklion is 39.28‰, and the average salinity of the World Ocean is 35‰.

Surf Forecast in Heraklion 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 Heraklion. 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 Heraklion. Data in table shown for 21 September 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)

Surf report in Heraklion

Heraklion weather forecast

Current temperature and weather

Data in a table show Heraklion temperature today (21 September 2025). For more information and forecast for a few days, go to the weather forecast Heraklion.

0-3 h	3-6 h	6-9 h	9-12 h
18.7°C	18.8°C	19.7°C	23.2°C

12-15 h	15-18 h	18-21 h	21-24 h
24.4°C	23.4°C	20.7°C	18.6°C

Heraklion water temperature by month

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

The nearest beaches and cities from Heraklion 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
Agia Pelagia	25.3°C	23°C		0.97 m
Made	25.3°C	23°C		0.97 m
Amoudara	25.3°C	23°C		0.97 m
Ammoudara	25.3°C	23°C		0.97 m
Fodele	25.6°C	21°C		0.97 m
Kokkini Hani	25.4°C	23°C		0.97 m
Gouves	25.6°C	24°C		0.97 m
Bali	25.5°C	25°C		0.99 m
Anissaras	25.6°C	24°C		0.96 m
Hersonissos	25.5°C	24°C		0.95 m

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Heraclion, Iraklion

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Our report for Heraklion 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.