St Kilda beach Sea Temperature

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

Water temperature in St Kilda beach right now

Below is the current sea temperature for St Kilda beach, Australia on 18th July 2025.

11.57° C

(52.82° F)

yesterday: 11.62° C (52.91° F)
a week ago: 11.61° C (52.9° 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 St Kilda beach on July 18th over the last 10 years is 11.49° C (52.68° F), with a low temperature of 10.89° C (51.6° F) and a high of 12.14° C (53.85° F).

Analysis and forecast for St Kilda beach water temperatures

The water temperature in St Kilda beach today is higher than the average temperature of 11.49° C (52.68° F) and the temperature on this day last year, 18th July 2024, was 11.53° C (52.75° F).

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

Date	Temperature (Celsius)	Temperature (Fahrenheit)
July 18	11.57° C	52.82° F
July 17	11.62° C	52.91° F
July 16	11.57° C	52.83° F
July 15	11.6° C	52.88° F
July 14	11.67° C	53.01° F
July 13	11.71° C	53.08° F
July 12	11.47° C	52.65° F
July 11	11.61° C	52.9° F
July 10	11.78° C	53.2° F
July 9	11.75° C	53.15° F
July 8	11.85° C	53.33° F
July 7	11.92° C	53.46° F
July 6	11.77° C	53.19° F
July 5	11.87° C	53.37° F
July 4	11.9° C	53.42° F
July 3	12.12° C	53.82° F
July 2	12.1° C	53.78° F
July 1	12.12° C	53.82° F
June 30	12.02° C	53.64° F
June 29	12.02° C	53.64° F
June 28	12.04° C	53.67° F
June 27	12.18° C	53.92° F
June 26	12.27° C	54.09° F
June 25	12.35° C	54.23° F
June 24	12.49° C	54.48° F
June 23	12.57° C	54.63° F
June 22	12.34° C	54.21° F
June 21	12.5° C	54.5° F
June 20	12.54° C	54.57° F
June 19	12.53° C	54.55° F
June 18	12.81° C	55.06° 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 St Kilda beach by month

The chart below shows the monthly average water temperature in St Kilda beach.

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

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

St Kilda beach map and nearby water temperatures