Coolum Beach Sea Temperature

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

Water temperature in Coolum Beach right now

Below is the current sea temperature for Coolum Beach, Australia on 26th September 2023.

21.44° C

(70.59° F)

  • yesterday: 21.69° C (71.04° F)
  • a week ago: 22.32° C (72.18° 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 Coolum Beach on September 26th over the last 10 years is 21.76° C (71.16° F), with a low temperature of 20.42° C (68.76° F) and a high of 22.76° C (72.97° F).

Analysis and forecast for Coolum Beach water temperatures

The water temperature in Coolum Beach today is lower than the average temperature of 21.76° C (71.16° F) and the temperature on this day last year, 26th September 2022, was 21.37° C (70.47° F).

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

Date Temperature (Celsius) Temperature (Fahrenheit)
September 26 21.44° C 70.59° F
September 25 21.69° C 71.04° F
September 25 21.69° C 71.04° F
September 24 21.73° C 71.11° F
September 23 22.01° C 71.62° F
September 22 22.17° C 71.91° F
September 21 22.26° C 72.07° F
September 20 22.23° C 72.01° F
September 19 22.32° C 72.18° F
September 18 22.23° C 72.01° F
September 17 22.23° C 72.01° F
September 16 22.01° C 71.62° F
September 15 21.87° C 71.37° F
September 14 21.85° C 71.33° F
September 13 21.94° C 71.49° F
September 12 22.02° C 71.64° F
September 11 22.08° C 71.74° F
September 10 22.09° C 71.76° F
September 9 22.07° C 71.73° F
September 8 22.04° C 71.67° F
September 7 21.92° C 71.46° F
September 6 21.74° C 71.13° F
September 5 21.52° C 70.74° F
September 4 21.48° C 70.66° F
September 3 21.31° C 70.36° F
September 2 21.48° C 70.66° F
September 1 21.36° C 70.45° F
August 31 21.27° C 70.29° F
August 30 21.15° C 70.07° F
August 29 21.05° C 69.89° 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 Coolum Beach by month

The chart below shows the monthly average water temperature in Coolum Beach.

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

Coolum Beach map and nearby water temperatures

Locations near Coolum Beach

The highest temperature in Australia today is 29.3° C (84.74° F) in Darwin. The lowest is in Austins Ferry, where the temperature of the water is 11.81° C (53.26° F).

Why measure sea surface temperatures (SST) in Coolum Beach?

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

  • "Coolum Beach Sea Temperature". Accessed on September 26, 2023.

  • "Coolum Beach Sea Temperature"., Accessed 26 September, 2023

  • Coolum Beach Sea Temperature. Retrieved from