Mount Martha Sea Temperature
Looking to find out what the sea water temperature in Mount Martha is for today and the next few days? Below are data and charts that will give you information about sea temperatures in Mount Martha and nearby locations.
Water temperature in Mount Martha right now
Below is the current sea temperature for Mount Martha, Australia on 25th March 2025.
20.15° C
(68.27° F)
- yesterday: 20.27° C (68.48° F)
- a week ago: 22.22° C (72° 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 Mount Martha on March 25th over the last 10 years is 19.69° C (67.45° F), with a low temperature of 18.47° C (65.25° F) and a high of 20.97° C (69.75° F).
Analysis and forecast for Mount Martha water temperatures
The water temperature in Mount Martha today is higher than the average temperature of 19.69° C (67.45° F) and the temperature on this day last year, 25th March 2024, was 20.12° C (68.22° F).
The chart and table below shows the change in water temperature in Mount Martha 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 Mount Martha by month
The chart below shows the monthly average water temperature in Mount Martha.
For more detailed information on how the sea temperature in Mount Martha changes for each month of the year, choose from the months below.
Mount Martha map and nearby water temperatures

Locations near Mount Martha
The highest temperature in Australia today is 30.84° C (87.51° F) in Port Hedland. The lowest is in Coffin Bay, where the temperature of the water is 16.27° C (61.28° F).
Why measure sea surface temperatures (SST) in Mount Martha?
The ocean covers about 71% of the Earth's surface, and scientists record the sea surface temperature (SST) of locations such as Mount Martha 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 Mount Martha 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 Mount Martha 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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"Mount Martha Sea Temperature". SeaTemperatures.net. Accessed on March 25, 2025. http://seatemperatures.net/australia-and-oceania/australia/mount-martha/.
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