Fremantle Sea Temperature

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

Water temperature in Fremantle right now

Below is the current sea temperature for Fremantle, Australia on 30th March 2023.

22.7° C

(72.85° F)

  • yesterday: 22.7° C (72.85° F)
  • a week ago: 23.06° C (73.51° 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 Fremantle on March 30th over the last 10 years is 22.26° C (72.07° F), with a low temperature of 21.18° C (70.12° F) and a high of 23.67° C (74.61° F).

Analysis and forecast for Fremantle water temperatures

The water temperature in Fremantle today is higher than the average temperature of 22.26° C (72.07° F) and the temperature on this day last year, 30th March 2022, was 22.7° C (72.86° F).

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

Date Temperature (Celsius) Temperature (Fahrenheit)
March 30 22.7° C 72.85° F
March 29 22.7° C 72.85° F
March 28 22.78° C 73° F
March 27 22.94° C 73.29° F
March 26 23.04° C 73.47° F
March 25 23.32° C 73.98° F
March 24 23.06° C 73.51° F
March 23 23.06° C 73.51° F
March 22 22.89° C 73.2° F
March 21 22.75° C 72.95° F
March 20 22.93° C 73.27° F
March 19 22.71° C 72.88° F
March 18 22.76° C 72.97° F
March 17 22.98° C 73.36° F
March 16 23.16° C 73.69° F
March 15 23.28° C 73.9° F
March 14 22.9° C 73.22° F
March 13 22.91° C 73.24° F
March 12 23.06° C 73.51° F
March 11 23.03° C 73.45° F
March 10 22.93° C 73.27° F
March 9 22.83° C 73.09° F
March 8 22.97° C 73.35° F
March 7 22.91° C 73.24° F
March 6 22.95° C 73.31° F
March 5 22.84° C 73.11° F
March 4 23.28° C 73.9° F
March 3 23.46° C 74.23° F
March 2 23.72° C 74.7° F
March 1 23.63° C 74.53° F
February 28 23.32° C 73.98° 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 Fremantle by month

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

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

Fremantle map and nearby water temperatures

Locations near Fremantle

The highest temperature in Australia today is 32.39° C (90.3° F) in Port Hedland. The lowest is in Bass Strait, where the temperature of the water is 17.22° C (62.99° F).

Why measure sea surface temperatures (SST) in Fremantle?

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

  • "Fremantle Sea Temperature". Accessed on March 30, 2023.

  • "Fremantle Sea Temperature"., Accessed 30 March, 2023

  • Fremantle Sea Temperature. Retrieved from