Mount Martha Sea Temperature in April

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

Average water temperature in Mount Martha for April

The average, high, and low temperatures below should help you if you can swim in the water in Mount Martha in April.

18.06° C

(64.52° F)

highest: 20.91° C (69.64° F)
lowest: 15.86° C (60.55° 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 April in Mount Martha

The chart below shows the range of low and high temperatures by day for the month of April in Mount Martha.

Water temperatures for April in Mount Martha in recent years

Day	2025	2024	2023	2022
1	20.39° C	19.85° C	18.63° C	19.98° C
2	20.2° C	19.69° C	18.54° C	19.84° C
3	20.15° C	19.42° C	18.54° C	19.46° C
4	19.8° C	19.25° C	18.47° C	19.17° C
5	19.44° C	19.26° C	18.35° C	19.05° C
6	19.2° C	19.17° C	18.43° C	18.69° C
7	18.96° C	19.1° C	18.41° C	18.62° C
8	18.92° C	19.02° C	18.27° C	18.75° C
9	19.11° C	18.81° C	18.03° C	18.86° C
10	19.18° C	18.5° C	17.68° C	18.92° C
11	18.99° C	18.26° C	17.54° C	18.76° C
12	19.19° C	18.14° C	17.41° C	18.54° C
13	19.42° C	18.07° C	17.46° C	18.55° C
14	19.1° C	18° C	17.5° C	18.48° C
15	19.27° C	18.04° C	17.38° C	18.58° C
16	19.39° C	18.1° C	17.2° C	18.88° C
17	19.57° C	18.19° C	17.14° C	18.92° C
18	19.52° C	18.14° C	17.1° C	18.83° C
19	19.54° C	18.08° C	16.99° C	18.34° C
20	19.42° C	17.96° C	16.93° C	18.22° C
21	19.13° C	17.94° C	16.95° C	18.09° C
22	19.05° C	18° C	17.08° C	17.75° C
23	19.14° C	17.98° C	17.18° C	17.57° C
24	19.24° C	17.63° C	17.29° C	17.54° C
25	19.04° C	17.35° C	17.43° C	17.69° C
26	0° C	16.97° C	17.43° C	17.71° C
27	0° C	16.88° C	17.39° C	17.72° C
28	0° C	16.71° C	17.11° C	17.76° C
29	0° C	16.73° C	16.97° C	17.62° C
30	0° C	16.66° C	16.95° C	17.47° C