Swansea Sea Temperature

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

Water temperature in Swansea right now

Below is the current sea temperature for Swansea, Australia on 10th November 2025.

14.01° C

(57.22° F)

  • yesterday: 13.59° C (56.46° F)
  • a week ago: 13.76° C (56.77° F)

Water at this temperature is cold and will feel very cold initially, but the body will get used to it and longer swims are possible. Experienced swimmers can manage several hours of swimming, however hypothermia is still a very big risk.

The average sea temperature for Swansea on November 10th over the last 10 years is 14.1° C (57.38° F), with a low temperature of 12.66° C (54.79° F) and a high of 15.48° C (59.86° F).

Analysis and forecast for Swansea water temperatures

The water temperature in Swansea today is lower than the average temperature of 14.1° C (57.38° F) and the temperature on this day last year, 10th November 2024, was 14.01° C (57.22° F).

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

Date Temperature (Celsius) Temperature (Fahrenheit)
November 10 14.01° C 57.22° F
November 9 13.59° C 56.46° F
November 9 13.59° C 56.46° F
November 8 13.48° C 56.26° F
November 7 13.4° C 56.12° F
November 6 13.64° C 56.55° F
November 5 13.57° C 56.43° F
November 4 13.72° C 56.7° F
November 3 13.76° C 56.77° F
November 2 13.42° C 56.16° F
November 1 13.57° C 56.43° F
October 31 13.6° C 56.48° F
October 30 13.05° C 55.49° F
October 29 12.64° C 54.75° F
October 28 12.72° C 54.9° F
October 27 12.64° C 54.75° F
October 26 12.8° C 55.04° F
October 25 12.8° C 55.04° F
October 24 12.6° C 54.68° F
October 23 12.66° C 54.79° F
October 22 12.48° C 54.46° F
October 21 12.61° C 54.7° F
October 20 12.5° C 54.5° F
October 19 12.62° C 54.72° F
October 18 12.75° C 54.95° F
October 17 12.57° C 54.63° F
October 16 12.74° C 54.93° F
October 15 12.58° C 54.64° F
October 14 12.21° C 53.98° F
October 13 12.33° C 54.19° 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 Swansea by month

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

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

January February March April May June July August September October November December

Swansea map and nearby water temperatures

Locations near Swansea

Coles Bay

Australia, Australia and Oceania

11.04 miles away

Freycinet

Australia, Australia and Oceania

12.00 miles away

Wineglass Bay

Australia, Australia and Oceania

12.18 miles away

Bicheno

Australia, Australia and Oceania

20.97 miles away

The highest temperature in Australia today is 30.47° C (86.85° F) in Darwin. The lowest is in Bruny Island, where the temperature of the water is 12.95° C (55.31° F).

Why measure sea surface temperatures (SST) in Swansea?

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

  • "Swansea Sea Temperature". SeaTemperatures.net. Accessed on November 10, 2025. http://seatemperatures.net/australia-and-oceania/australia/swansea/.

  • "Swansea Sea Temperature". SeaTemperatures.net, http://seatemperatures.net/australia-and-oceania/australia/swansea/. Accessed 10 November, 2025

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