Dunsborough Sea Temperature

Looking to find out what the sea water temperature in Dunsborough is for today and the next few days? Below are data and charts that will give you information about sea temperatures in Dunsborough and nearby locations.

Water temperature in Dunsborough right now

Below is the current sea temperature for Dunsborough, Australia on 21st April 2025.

22.48° C

(72.46° F)

  • yesterday: 22.44° C (72.39° F)
  • a week ago: 23.05° C (73.49° 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 Dunsborough on April 21st over the last 10 years is 21.31° C (70.36° F), with a low temperature of 19.32° C (66.78° F) and a high of 22.81° C (73.06° F).

Analysis and forecast for Dunsborough water temperatures

The water temperature in Dunsborough today is higher than the average temperature of 21.31° C (70.36° F) and the temperature on this day last year, 21st April 2024, was 22.4° C (72.32° F).

The chart and table below shows the change in water temperature in Dunsborough over the last 30 days:

Date Temperature (Celsius) Temperature (Fahrenheit)
April 21 22.48° C 72.46° F
April 20 22.44° C 72.39° F
April 19 22.88° C 73.18° F
April 18 22.96° C 73.33° F
April 17 23.42° C 74.16° F
April 16 23.41° C 74.14° F
April 15 23.39° C 74.1° F
April 14 23.05° C 73.49° F
April 13 22.66° C 72.79° F
April 12 22.57° C 72.63° F
April 11 22.74° C 72.93° F
April 10 22.74° C 72.93° F
April 9 22.72° C 72.9° F
April 8 22.66° C 72.79° F
April 7 22.55° C 72.59° F
April 6 22.4° C 72.32° F
April 5 22.45° C 72.41° F
April 4 22.57° C 72.63° F
April 3 22.8° C 73.04° F
April 2 22.9° C 73.22° F
April 1 22.93° C 73.27° F
March 31 22.97° C 73.35° F
March 30 22.99° C 73.38° F
March 29 23.09° C 73.56° F
March 28 22.97° C 73.35° F
March 27 22.59° C 72.66° F
March 26 22.77° C 72.99° F
March 25 22.62° C 72.72° F
March 24 22.6° C 72.68° F
March 23 22.39° C 72.3° F
March 22 22.31° C 72.16° F

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 Dunsborough by month

The chart below shows the monthly average water temperature in Dunsborough.

For more detailed information on how the sea temperature in Dunsborough changes for each month of the year, choose from the months below.

Dunsborough map and nearby water temperatures

Locations near Dunsborough

The highest temperature in Australia today is 30.07° C (86.12° F) in Weipa. The lowest is in Coffin Bay, where the temperature of the water is 14.86° C (58.74° F).

Why measure sea surface temperatures (SST) in Dunsborough?

The ocean covers about 71% of the Earth's surface, and scientists record the sea surface temperature (SST) of locations such as Dunsborough 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 Dunsborough 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 Dunsborough 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.

  • "Dunsborough Sea Temperature". SeaTemperatures.net. Accessed on April 21, 2025. http://seatemperatures.net/australia-and-oceania/australia/dunsborough/.

  • "Dunsborough Sea Temperature". SeaTemperatures.net, http://seatemperatures.net/australia-and-oceania/australia/dunsborough/. Accessed 21 April, 2025

  • Dunsborough Sea Temperature. SeaTemperatures.net. Retrieved from http://seatemperatures.net/australia-and-oceania/australia/dunsborough/.