Garden Island Sea Temperature in September

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

Average water temperature in Garden Island for September

The average, high, and low temperatures below should help you if you can swim in the water in Garden Island in September.

18.62° C

(65.52° F)

highest: 20.34° C (68.61° F)
lowest: 17.06° C (62.71° 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 September in Garden Island

The chart below shows the range of low and high temperatures by day for the month of September in Garden Island.

Water temperatures for September in Garden Island in recent years

Day	2024	2023	2022	2021
1	0° C	18.64° C	18.21° C	18.81° C
2	0° C	18.41° C	18.44° C	18.51° C
3	0° C	18.5° C	18.39° C	18.44° C
4	0° C	18.19° C	18.45° C	18.62° C
5	0° C	18.49° C	18.49° C	18.73° C
6	0° C	18.18° C	18.43° C	18.58° C
7	0° C	17.96° C	18.35° C	18.42° C
8	0° C	17.98° C	18.42° C	18.52° C
9	0° C	18.11° C	18.34° C	18.62° C
10	0° C	18.24° C	18.26° C	18.38° C
11	0° C	18.44° C	18.32° C	18.35° C
12	0° C	18.52° C	18.38° C	18.41° C
13	0° C	18.53° C	18.35° C	18.53° C
14	0° C	18.46° C	18.32° C	18.46° C
15	0° C	18.57° C	18.23° C	18.38° C
16	0° C	18.66° C	18.16° C	18.32° C
17	0° C	18.54° C	18.23° C	18.39° C
18	0° C	18.49° C	18.43° C	18.59° C
19	0° C	18.45° C	18.45° C	18.97° C
20	0° C	18.5° C	18.39° C	18.97° C
21	0° C	18.57° C	18.3° C	18.92° C
22	0° C	18.67° C	18.21° C	18.85° C
23	0° C	18.5° C	18.28° C	18.96° C
24	0° C	18.48° C	18.22° C	19.05° C
25	0° C	18.51° C	18.19° C	19.19° C
26	0° C	18.76° C	18.15° C	19.17° C
27	0° C	19.17° C	18.21° C	19.05° C
28	0° C	19.25° C	18.34° C	19.01° C
29	0° C	19.15° C	18.49° C	19.24° C
30	0° C	19.13° C	18.57° C	19.34° C