Hillarys Sea Temperature

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

Water temperature in Hillarys right now

Below is the current sea temperature for Hillarys, Australia on 30th January 2023.

23.46° C

(74.23° F)

  • yesterday: 23.54° C (74.38° F)
  • a week ago: 22.6° C (72.68° 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 Hillarys on January 30th over the last 10 years is 22.46° C (72.42° F), with a low temperature of 20.6° C (69.08° F) and a high of 24.07° C (75.33° F).

Analysis and forecast for Hillarys water temperatures

The water temperature in Hillarys today is higher than the average temperature of 22.46° C (72.42° F) and the temperature on this day last year, 30th January 2022, was 23.53° C (74.35° F).

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

Date Temperature (Celsius) Temperature (Fahrenheit)
January 30 23.46° C 74.23° F
January 29 23.54° C 74.38° F
January 28 21.87° C 71.37° F
January 27 22.05° C 71.69° F
January 26 22.54° C 72.57° F
January 25 22.63° C 72.73° F
January 24 22.5° C 72.5° F
January 23 22.6° C 72.68° F
January 22 21.81° C 71.26° F
January 21 22.35° C 72.23° F
January 20 21.9° C 71.42° F
January 19 21.6° C 70.88° F
January 18 21.31° C 70.36° F
January 17 21.42° C 70.56° F
January 16 21.63° C 70.93° F
January 15 22.25° C 72.05° F
January 14 22.09° C 71.76° F
January 13 22.17° C 71.91° F
January 12 22.1° C 71.78° F
January 11 21.95° C 71.51° F
January 10 21.94° C 71.49° F
January 9 22.08° C 71.74° F
January 8 21.89° C 71.4° F
January 7 21.96° C 71.53° F
January 6 22.38° C 72.28° F
January 5 22.58° C 72.64° F
January 4 22.24° C 72.03° F
January 3 22.1° C 71.78° F
January 2 22.01° C 71.62° F
January 1 21.94° C 71.49° F
December 31 21.99° C 71.58° 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 Hillarys by month

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

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

Hillarys map and nearby water temperatures

Locations near Hillarys

The highest temperature in Australia today is 31.21° C (88.18° F) in Port Hedland. The lowest is in Bass Strait, where the temperature of the water is 17.03° C (62.66° F).

Why measure sea surface temperatures (SST) in Hillarys?

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

  • "Hillarys Sea Temperature". SeaTemperatures.net. Accessed on January 30, 2023. http://seatemperatures.net/australia-and-oceania/australia/hillarys/.

  • "Hillarys Sea Temperature". SeaTemperatures.net, http://seatemperatures.net/australia-and-oceania/australia/hillarys/. Accessed 30 January, 2023

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