Water temperature in South Arm

This data the coastal South Arm 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 South Arm

Water temperature in South Arm today is 11.5°C. Based on our historical data over a period of ten years, the warmest water in this day in the Tasman Sea near South Arm was recorded in 2007 and was 12.9°C, and the coldest was recorded in 2012 at 10.6°C. Sea water temperature in South Arm is expected to rise to 12°C in the next 10 days. September average water temperature in South Arm is 11.3°C, the minimum temperature is 9.4°C, and the maximum is 12.9°C.

Throughout the year, the water temperature in South Arm does not rise above 20°C and therefore is not suitable for comfortable swimming. The average water temperature in South Arm in winter reaches 11.1°C, in spring 12.8°C, in summer the average temperature rises to 17.1°C, and in autumn it is 15.3°C.

South Arm water temperature now

The ocean salinity in South Arm is 35.76‰, and the average salinity of the World Ocean is 35‰.

Surf Forecast in South Arm 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 South Arm. 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 South Arm. 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 South Arm

South Arm weather forecast

Current temperature and weather

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

0-3 h	3-6 h	6-9 h	9-12 h
6°C	6.4°C	5.4°C	7.1°C

12-15 h	15-18 h	18-21 h	21-24 h
9.6°C	9°C	5.9°C	3.5°C

South Arm water temperature by month

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

The nearest beaches and cities from South Arm 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
Coningham	11.5°C	9°C		0.38 m
Snug	11.5°C	9°C		0.38 m
Lauderdale	11.2°C	9°C		0.41 m
Cremorne	11.2°C	9°C		0.41 m
Bellerive	11.1°C	10°C		0.3 m
Claremont	11.1°C	10°C		0.3 m
Glenorchy	11.1°C	10°C		0.3 m
Park Beach	11.1°C	9°C		0.41 m
Middleton	11.7°C	8°C		0.4 m
Berriedale	11.1°C	10°C		0.3 m

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South Arm Beach

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Our report for South Arm 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.