Dee Why Sea Temperature

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

Water temperature in Dee Why right now

Below is the current sea temperature for Dee Why, Australia on 29th February 2024.

23.69° C

(74.65° F)

  • yesterday: 23.65° C (74.58° F)
  • a week ago: 24.69° C (76.44° 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 Dee Why on February 29th over the last 10 years is 23.26° C (73.87° F), with a low temperature of 22.34° C (72.21° F) and a high of 24.81° C (76.66° F).

Analysis and forecast for Dee Why water temperatures

The water temperature in Dee Why today is higher than the average temperature of 23.26° C (73.87° F) and the temperature on this day last year, 1st March 2023, was 23.68° C (74.62° F).

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

Date Temperature (Celsius) Temperature (Fahrenheit)
February 29 23.69° C 74.65° F
February 28 23.65° C 74.58° F
February 27 24.43° C 75.97° F
February 26 25.11° C 77.2° F
February 25 24.61° C 76.3° F
February 24 24.87° C 76.77° F
February 23 25.36° C 77.65° F
February 22 24.69° C 76.44° F
February 21 24.49° C 76.08° F
February 20 24.64° C 76.35° F
February 19 24.57° C 76.23° F
February 18 24.32° C 75.78° F
February 17 24.1° C 75.38° F
February 16 23.77° C 74.79° F
February 15 23.61° C 74.5° F
February 14 23.62° C 74.52° F
February 13 23.93° C 75.07° F
February 12 23.9° C 75.02° F
February 11 23.9° C 75.02° F
February 10 24.03° C 75.25° F
February 9 24.26° C 75.67° F
February 8 24.42° C 75.96° F
February 7 24.51° C 76.12° F
February 6 24.78° C 76.6° F
February 5 25.14° C 77.25° F
February 4 24.91° C 76.84° F
February 3 24.53° C 76.15° F
February 2 24.4° C 75.92° F
February 1 24.16° C 75.49° F
January 31 23.99° C 75.18° F
January 30 23.78° C 74.8° 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 Dee Why by month

The chart below shows the monthly average water temperature in Dee Why.

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

Dee Why map and nearby water temperatures

Locations near Dee Why

The highest temperature in Australia today is 31.51° C (88.73° F) in Port Hedland. The lowest is in Bruny Island, where the temperature of the water is 16.9° C (62.43° F).

Why measure sea surface temperatures (SST) in Dee Why?

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

  • "Dee Why Sea Temperature". Accessed on February 29, 2024.

  • "Dee Why Sea Temperature"., Accessed 29 February, 2024

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