St Kilda Sea Temperature in December

Looking to find out what the average sea water temperature in St Kilda is for December? Find out what the lowest, highest, and average water temperatures are for St Kilda over the past 10 years.

Average water temperature in St Kilda for December

The average, high, and low temperatures below should help you if you can swim in the water in St Kilda in December.

18.86° C

(65.95° F)

highest: 22.23° C (72.01° F)
lowest: 16.64° C (61.95° F)

At this temperature, water will feel cold compared to a swimming pool, but with a bit of experience and practice most people will find the water relatively comfortable to swim in.

Water temperature range by day in December in St Kilda

The chart below shows the range of low and high temperatures by day for the month of December in St Kilda.

Water temperatures for December in St Kilda in recent years

Day	2024	2023	2022	2021
1	0° C	18.54° C	16.88° C	18.78° C
2	0° C	18.25° C	17.35° C	18.43° C
3	0° C	17.92° C	18.25° C	18.25° C
4	0° C	18.47° C	19.05° C	18.22° C
5	0° C	18.63° C	18.12° C	18.21° C
6	0° C	18.95° C	17.97° C	18.24° C
7	0° C	19.09° C	17.81° C	18.11° C
8	0° C	19.27° C	17.66° C	18.02° C
9	0° C	19.36° C	17.63° C	17.65° C
10	0° C	19.95° C	17.83° C	17.55° C
11	0° C	20.17° C	17.66° C	17.67° C
12	0° C	20.11° C	17.41° C	18.06° C
13	0° C	20.02° C	17.07° C	18.45° C
14	0° C	19.67° C	16.71° C	18.28° C
15	0° C	19.77° C	16.64° C	18.21° C
16	0° C	19.7° C	16.73° C	18.3° C
17	0° C	19.74° C	16.88° C	18.99° C
18	0° C	19.44° C	17.05° C	18.63° C
19	0° C	19.35° C	17.32° C	18.44° C
20	0° C	19.43° C	17.39° C	18.53° C
21	0° C	19.35° C	17.56° C	18.69° C
22	0° C	19.24° C	17.93° C	18.8° C
23	0° C	19.16° C	18.18° C	19.14° C
24	0° C	19.23° C	18.52° C	19.48° C
25	0° C	19.61° C	19.12° C	19.45° C
26	0° C	19.59° C	19.89° C	19.27° C
27	0° C	19.6° C	21.06° C	19.16° C
28	0° C	19.75° C	20.11° C	19.23° C
29	0° C	19.74° C	19.5° C	19.48° C
30	0° C	19.61° C	19.72° C	20.11° C
31	0° C	19.47° C	20.15° C	20.82° C