Gymea Bay Sea Temperature

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

Water temperature in Gymea Bay right now

Below is the current sea temperature for Gymea Bay, Australia on 15th June 2025.

20.27° C

(68.49° F)

  • yesterday: 20.32° C (68.58° F)
  • a week ago: 19.43° C (66.97° 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 Gymea Bay on June 15th over the last 10 years is 20.01° C (68.01° F), with a low temperature of 18.73° C (65.71° F) and a high of 21.57° C (70.83° F).

Analysis and forecast for Gymea Bay water temperatures

The water temperature in Gymea Bay today is higher than the average temperature of 20.01° C (68.01° F) and the temperature on this day last year, 15th June 2024, was 20.33° C (68.59° F).

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

Date Temperature (Celsius) Temperature (Fahrenheit)
June 15 20.27° C 68.49° F
June 14 20.32° C 68.58° F
June 13 18.96° C 66.13° F
June 12 18.91° C 66.04° F
June 11 19.07° C 66.33° F
June 10 19.05° C 66.29° F
June 9 19.24° C 66.63° F
June 8 19.43° C 66.97° F
June 7 19.6° C 67.28° F
June 6 19.42° C 66.96° F
June 5 19.36° C 66.85° F
June 4 19.28° C 66.7° F
June 3 19.35° C 66.83° F
June 2 19.27° C 66.69° F
June 1 19.61° C 67.3° F
May 31 19.61° C 67.3° F
May 30 19.85° C 67.73° F
May 29 19.85° C 67.73° F
May 28 19.99° C 67.98° F
May 27 20.11° C 68.2° F
May 26 20.19° C 68.34° F
May 25 20.35° C 68.63° F
May 24 20.4° C 68.72° F
May 23 20.55° C 68.99° F
May 22 20.66° C 69.19° F
May 21 20.85° C 69.53° F
May 20 20.89° C 69.6° F
May 19 21.03° C 69.85° F
May 18 21.17° C 70.11° F
May 17 21.23° C 70.21° F
May 16 21.35° C 70.43° 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 Gymea Bay by month

The chart below shows the monthly average water temperature in Gymea Bay.

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

Gymea Bay map and nearby water temperatures

Locations near Gymea Bay

The highest temperature in Australia today is 27.45° C (81.41° F) in Darwin. The lowest is in Austins Ferry, where the temperature of the water is 13.45° C (56.21° F).

Why measure sea surface temperatures (SST) in Gymea Bay?

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

  • "Gymea Bay Sea Temperature". SeaTemperatures.net. Accessed on June 15, 2025. http://seatemperatures.net/australia-and-oceania/australia/gymea-bay/.

  • "Gymea Bay Sea Temperature". SeaTemperatures.net, http://seatemperatures.net/australia-and-oceania/australia/gymea-bay/. Accessed 15 June, 2025

  • Gymea Bay Sea Temperature. SeaTemperatures.net. Retrieved from http://seatemperatures.net/australia-and-oceania/australia/gymea-bay/.