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 21st March 2025.

20.8° C

(69.43° F)

yesterday: 21.12° C (70.01° F)
a week ago: 22.44° C (72.39° 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 St Kilda beach on March 21st over the last 10 years is 19.92° C (67.86° F), with a low temperature of 18.37° C (65.07° F) and a high of 20.95° C (69.71° 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 19.92° C (67.86° F) and the temperature on this day last year, 21st March 2024, was 20.74° C (69.33° 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)
March 21	20.8° C	69.43° F
March 20	21.12° C	70.01° F
March 19	21.96° C	71.53° F
March 18	21.84° C	71.31° F
March 17	22.42° C	72.36° F
March 16	22.55° C	72.59° F
March 15	23.85° C	74.93° F
March 14	22.44° C	72.39° F
March 13	22.28° C	72.1° F
March 12	23.17° C	73.71° F
March 11	23.44° C	74.19° F
March 10	23.3° C	73.94° F
March 9	22.76° C	72.97° F
March 8	22.03° C	71.65° F
March 7	21.46° C	70.63° F
March 6	21.34° C	70.41° F
March 5	21.69° C	71.04° F
March 4	21.56° C	70.81° F
March 3	21.31° C	70.36° F
March 2	21.35° C	70.43° F
March 1	21.38° C	70.48° F
February 28	21.21° C	70.18° F
February 27	21.26° C	70.27° F
February 26	21.3° C	70.34° F
February 25	21.17° C	70.11° F
February 24	20.97° C	69.75° F
February 23	20.98° C	69.76° F
February 22	20.97° C	69.75° F
February 21	20.77° C	69.39° F
February 20	20.64° C	69.15° F
February 19	20.69° C	69.24° 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