Water temperature in Dalmeny

This data the coastal Dalmeny 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 Dalmeny

Water temperature in Dalmeny today is 16.5°C. Based on our historical data over a period of ten years, the warmest water in this day in the Tasman Sea near Dalmeny was recorded in 2013 and was 17.7°C, and the coldest was recorded in 2018 at 15°C. Sea water temperature in Dalmeny is expected to rise to 16.7°C in the next 10 days. September average water temperature in Dalmeny is 16.2°C, the minimum temperature is 14.4°C, and the maximum is 18.3°C.

The swimming season in Dalmeny lasts from December to May. During those months, Dalmeny water temperature does not drop below 20°C and therefore suitable for comfortable swimming. The average water temperature in Dalmeny in winter reaches 16.8°C, in spring 17.3°C, in summer the average temperature rises to 21.2°C, and in autumn it is 20.9°C.

Dalmeny water temperature now

The ocean salinity in Dalmeny is 35.46‰, and the average salinity of the World Ocean is 35‰.

Surf Forecast in Dalmeny 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 Dalmeny. 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 Dalmeny. Data in table shown for 25 September 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)

Surf report in Dalmeny

Dalmeny weather forecast

Current temperature and weather

Data in a table show Dalmeny temperature today (25 September 2025). For more information and forecast for a few days, go to the weather forecast Dalmeny.

0-3 h	3-6 h	6-9 h	9-12 h
10.5°C	7.9°C	6.7°C	16.4°C

12-15 h	15-18 h	18-21 h	21-24 h
21.2°C	19.8°C	14.2°C	12.3°C

Dalmeny water temperature by month

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

The nearest beaches and cities from Dalmeny 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
Batemans Bay	16.5°C	22°C		1.18 m
Surf Beach	16.5°C	22°C		1.18 m
Depot Beach	16.6°C	22°C		1.29 m
Bawley Point	16.5°C	22°C		1.07 m
Ulladulla	16.7°C	20°C		1.34 m
Mollymook	16.9°C	20°C		1.34 m
Narrawallee	17.1°C	20°C		1.25 m
Manyana	17.3°C	20°C		1.25 m
Berrara	17.6°C	20°C		1.61 m
Bendalong	17.6°C	20°C		1.61 m

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Our report for Dalmeny 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.