Water temperature in Heron island

This data the coastal Heron island ocean 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 ocean temperature in Heron island

Water temperature in Heron island today is 22.7°C. Based on our historical data over a period of ten years, the warmest water in this day in the Great Barrier Reef near Heron island was recorded in 2024 and was 23°C, and the coldest was recorded in 2011 at 21.5°C. Sea water temperature in Heron island is expected to be constant 22.7°C in the next 10 days. September average water temperature in Heron island is 22.1°C, the minimum temperature is 20.6°C, and the maximum is 23.6°C.

The swimming season in Heron island lasts from January to December, twelve months per year! During those months, Heron island water temperature does not drop below 20°C and therefore suitable for comfortable swimming. The average water temperature in Heron island in winter reaches 22.1°C, in spring 23.3°C, in summer the average temperature rises to 26.9°C, and in autumn it is 25.8°C.

Heron island water temperature now

The ocean salinity in Heron island is 35.44‰, and the average salinity of the World Ocean is 35‰.

Surf Forecast in Heron island 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 Heron island. 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 Heron island. 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 Heron island

Heron island weather forecast

Current temperature and weather

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

0-3 h	3-6 h	6-9 h	9-12 h
19°C	18°C	17.6°C	21.2°C

12-15 h	15-18 h	18-21 h	21-24 h
22.3°C	22.8°C	20.7°C	19.9°C

Heron island water temperature by month

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

The nearest beaches and cities from Heron island 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
Lady Musgrave Island	23.3°C	23°C		0.49 m
Tannum Sands	21.8°C	24°C		0.22 m
Seventeen Seventy	22.1°C	23°C		0.37 m
Great Keppel Island	22.1°C	27°C		0.16 m
Lady Elliot Island	23.1°C	20°C		0.6 m
Emu Park	22.4°C	27°C		0.14 m
Kinka Beach	22.3°C	27°C		0.14 m
Moore Park Beach	22°C	20°C		0.4 m
Bargara	21.7°C	20°C		0.35 m
Elliott Heads	21.7°C	20°C		0.35 m

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Our report for Heron island 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.