Great Barrier Reef Sea Temperature

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

Water temperature in Great Barrier Reef right now

Below is the current sea temperature for Great Barrier Reef, Australia on 30th March 2023.

29.02° C

(84.23° F)

  • yesterday: 28.88° C (83.98° F)
  • a week ago: 28.8° C (83.84° F)

This water temperature is comparable to that of a swimming pool, but it might be higher than most open water swimmers prefer for serious swimming. Make sure to drink plenty of water before and after swimming and don't wear a wetsuit to avoid overheating.

The average sea temperature for Great Barrier Reef on March 30th over the last 10 years is 28.42° C (83.15° F), with a low temperature of 27.79° C (82.02° F) and a high of 29.11° C (84.4° F).

Analysis and forecast for Great Barrier Reef water temperatures

The water temperature in Great Barrier Reef today is higher than the average temperature of 28.42° C (83.15° F) and the temperature on this day last year, 30th March 2022, was 29.01° C (84.22° F).

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

Date Temperature (Celsius) Temperature (Fahrenheit)
March 30 29.02° C 84.23° F
March 29 28.88° C 83.98° F
March 28 28.84° C 83.91° F
March 27 28.76° C 83.77° F
March 26 28.78° C 83.8° F
March 25 28.84° C 83.91° F
March 24 29.01° C 84.22° F
March 23 28.8° C 83.84° F
March 22 28.74° C 83.73° F
March 21 28.67° C 83.61° F
March 20 28.83° C 83.89° F
March 19 28.94° C 84.09° F
March 18 29.15° C 84.47° F
March 17 29.33° C 84.79° F
March 16 29.48° C 85.06° F
March 15 29.28° C 84.7° F
March 14 29.31° C 84.76° F
March 13 29.26° C 84.67° F
March 12 28.95° C 84.11° F
March 11 28.77° C 83.79° F
March 10 28.64° C 83.55° F
March 9 28.83° C 83.89° F
March 8 28.65° C 83.57° F
March 7 28.73° C 83.71° F
March 6 28.84° C 83.91° F
March 5 29.11° C 84.4° F
March 4 29.07° C 84.33° F
March 3 29.2° C 84.56° F
March 2 29.1° C 84.38° F
March 1 28.74° C 83.73° F
February 28 28.66° C 83.59° 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 Great Barrier Reef by month

The chart below shows the monthly average water temperature in Great Barrier Reef.

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

Great Barrier Reef map and nearby water temperatures

The highest temperature in Australia today is 32.4° C (90.31° F) in Port Hedland. The lowest is in Bass Strait, where the temperature of the water is 17.23° C (63.01° F).

Why measure sea surface temperatures (SST) in Great Barrier Reef?

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

  • "Great Barrier Reef Sea Temperature". Accessed on March 30, 2023.

  • "Great Barrier Reef Sea Temperature"., Accessed 30 March, 2023

  • Great Barrier Reef Sea Temperature. Retrieved from