Margaret River Sea Temperature
Looking to find out what the sea water temperature in Margaret River is for today and the next few days? Below are data and charts that will give you information about sea temperatures in Margaret River and nearby locations.
Water temperature in Margaret River right now
Below is the current sea temperature for Margaret River, Australia on 15th December 2025.
20.55° C
(69° F)
- yesterday: 20.98° C (69.77° F)
- a week ago: 20.1° C (68.18° F)
Water at this temperature is very pleasant to swim in and if you tend to wear a wetsuit when swimming, you might consider removing it now to avoid the body overheating.
The average sea temperature for Margaret River on December 15th over the last 10 years is 19.99° C (67.98° F), with a low temperature of 18.89° C (66° F) and a high of 21.19° C (70.14° F).
Analysis and forecast for Margaret River water temperatures
The water temperature in Margaret River today is higher than the average temperature of 19.99° C (67.98° F) and the temperature on this day last year, 15th December 2024, was 20.54° C (68.97° F).
The chart and table below shows the change in water temperature in Margaret River over the last 30 days:
The actual nearshore temperatures may vary by several degrees and this can also be heavily affected by weather. Strong winds can cause cold, deep waters to replace the surface waters that had been warmed by the sun, and heavy rain can also reduce the temperature of the sea surface temperature as well.
Water temperature in Margaret River by month
The chart below shows the monthly average water temperature in Margaret River.
For more detailed information on how the sea temperature in Margaret River changes for each month of the year, choose from the months below.
Margaret River map and nearby water temperatures
Locations near Margaret River
The highest temperature in Australia today is 31.23° C (88.22° F) in Broome. The lowest is in Bruny Island, where the temperature of the water is 15.24° C (59.44° F).
Why measure sea surface temperatures (SST) in Margaret River?
The ocean covers about 71% of the Earth's surface, and scientists record the sea surface temperature (SST) of locations such as Margaret River because they want to understand and learn how the ocean communicates with the atomosphere of Earth.
SST is one measure that provides information on the global climate, and it can be used to predict the weather in Margaret River as well as atmospheric model simulations and to study marine ecosystems in the area.
Data source and citation
Raw data for the calculations made to find the sea surface temperature in Margaret River comes from the National Oceanic and Atmospheric Administration (NOAA) and their 1/4° daily Optimum Interpolation Sea Surface Temperature.
The water temperature data is constructed by combining observations from different platforms (satellites, ships, buoys, and Argo floats) on a regular global grid. A spatially complete sea surface temperature map is then built by interpolating to fill in gaps in the data.
If you'd like to use any of the information above in the format it is presented, please use the citation tool below.
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<a href="http://seatemperatures.net/australia-and-oceania/australia/margaret-river/">Margaret River Sea Temperature</a>
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"Margaret River Sea Temperature". SeaTemperatures.net. Accessed on December 15, 2025. http://seatemperatures.net/australia-and-oceania/australia/margaret-river/.
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"Margaret River Sea Temperature". SeaTemperatures.net, http://seatemperatures.net/australia-and-oceania/australia/margaret-river/. Accessed 15 December, 2025
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Margaret River Sea Temperature. SeaTemperatures.net. Retrieved from http://seatemperatures.net/australia-and-oceania/australia/margaret-river/.