This data the coastal Whyalla 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.
Water temperature in Whyalla today is 13.7°C. Based on our historical data over a period of ten years, the warmest water in this day in the Spencer Gulf near Whyalla was recorded in 2013 and was 15.6°C, and the coldest was recorded in 2017 at 13.5°C. Sea water temperature in Whyalla is expected to rise to 15°C in the next 10 days. September average water temperature in Whyalla is 15.1°C, the minimum temperature is 13.2°C, and the maximum is 18.3°C.
The swimming season in Whyalla lasts from November to April. During those months, Whyalla water temperature does not drop below 20°C and therefore suitable for comfortable swimming. The average water temperature in Whyalla in winter reaches 13.6°C, in spring 17.4°C, in summer the average temperature rises to 23°C, and in autumn it is 20.1°C.
5 September 2025 |
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today temp |
13.7°C |
4 September 2025 |
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yesterday temp |
13.5°C |
The ocean salinity in Whyalla is 43.17‰, and the average salinity of the World Ocean is 35‰.
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 Whyalla. 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 Whyalla. Data in table shown for 5 September 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)
0-3 h | 3-6 h | 6-9 h | 9-12 h |
---|---|---|---|
1' 2" | 1' 7" | 1' 6" | 1' 6" |
0.35 m | 0.49 m | 0.46 m | 0.46 m |
12-15 h | 15-18 h | 18-21 h | 21-24 h |
---|---|---|---|
1' 10" | 1' 10" | 1' 7" | 1' 5" |
0.57 m | 0.57 m | 0.48 m | 0.42 m |
Data in a table show Whyalla temperature today (5 September 2025). For more information and forecast for a few days, go to the weather forecast Whyalla.
0-3 h | 3-6 h | 6-9 h | 9-12 h |
---|---|---|---|
![]() | ![]() | ![]() | ![]() |
10.7°C | 11.1°C | 11.5°C | 14.7°C |
12-15 h | 15-18 h | 18-21 h | 21-24 h |
---|---|---|---|
![]() | ![]() | ![]() | ![]() |
18.7°C | 21.7°C | 18.2°C | 16.7°C |
You may also be interested in other sections of our site for Whyalla: Sunrise and Sunset, Tides
These figures shows the average, minimum and maximum monthly sea temperature in Whyalla. 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 Whyalla 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
Month | Avr | Min | Max | |
---|---|---|---|---|
January | 23.5°C | 20.9°C | 26.1°C | warm |
Ocean water temperature in Whyalla in January | ||||
February | 23.7°C | 21.8°C | 26.1°C | warm |
Ocean water temperature in Whyalla in February | ||||
March | 22.7°C | 20.6°C | 25.7°C | warm |
Ocean water temperature in Whyalla in March | ||||
April | 20.3°C | 17.1°C | 23.1°C | warm |
Ocean water temperature in Whyalla in April | ||||
May | 17.4°C | 14.7°C | 20.3°C | cold |
Ocean water temperature in Whyalla in May | ||||
June | 14.7°C | 12.7°C | 17°C | cold |
Ocean water temperature in Whyalla in June | ||||
July | 13°C | 11.8°C | 14.7°C | cold |
Ocean water temperature in Whyalla in July | ||||
August | 13.1°C | 11.6°C | 15.5°C | cold |
Ocean water temperature in Whyalla in August | ||||
September | 15.1°C | 13.2°C | 18.3°C | cold |
Ocean water temperature in Whyalla in September | ||||
October | 17.4°C | 14.5°C | 20.5°C | cold |
Ocean water temperature in Whyalla in October | ||||
November | 19.8°C | 16.9°C | 23.2°C | cold |
Ocean water temperature in Whyalla in November | ||||
December | 21.8°C | 19.7°C | 25.2°C | warm |
Ocean water temperature in Whyalla in December |