Water temperature in Trial Bay (NSW) in August

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Is it warm enough to swim in Trial Bay in August? Average water temperature in Trial Bay in August is 19.6°C and therefore is not suitable for comfortable swimming. The warmest sea in Trial Bay in August is 21.4°C, and the coldest is 16.8°C. To find out the sea temperature today and in the coming days, go to Current sea temperature in Trial Bay

Changes water temperature in Trial Bay in August 2025, 2024

To get an accurate forecast for the water temperature in Trial Bay for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Trial Bay, the selected years in the table also show the values of the maximum and minimum temperatures on each of the days of August.

Sea temperature

Sea state

Weather forecast

You can choose any other years:

Day	2025	2024	Min	Max
1 August	20.4°C	19.2°C	18.7°C	20.8°C
2 August	20.2°C	19.3°C	18.8°C	21°C
3 August	20.3°C	19.2°C	18.2°C	20.7°C
4 August	20.7°C	19.2°C	18.3°C	20.8°C
5 August	20.5°C	19.2°C	18.7°C	20.8°C
6 August	20.5°C	19.2°C	18.6°C	20.5°C
7 August	20.4°C	19.2°C	18.3°C	20.4°C
8 August	20.6°C	19.1°C	18.3°C	20.8°C
9 August	20.7°C	18.9°C	18.3°C	20.7°C
10 August	20.6°C	18.9°C	18.8°C	20.6°C
11 August	20.7°C	19°C	18.8°C	20.7°C
12 August	20.6°C	19.2°C	19.2°C	20.6°C
13 August	20.5°C	19.3°C	16.8°C	20.6°C
14 August	20.6°C	19.5°C	18.9°C	20.6°C
15 August	20.2°C	19.6°C	17.5°C	20.6°C

Day	2025	2024	Min	Max
16 August	20.3°C	19.6°C	18.2°C	20.4°C
17 August	20.3°C	19.5°C	18.5°C	20.4°C
18 August	20.4°C	19.7°C	18.4°C	20.4°C
19 August	20.3°C	20°C	18.2°C	20.3°C
20 August	20.3°C	19.7°C	18.1°C	20.3°C
21 August	20.3°C	19.8°C	18.4°C	20.9°C
22 August	20.2°C	19.9°C	18.3°C	20.9°C
23 August	20.1°C	19.5°C	18.3°C	20.9°C
24 August	19.6°C	19.6°C	18.3°C	20.8°C
25 August	20.1°C	19.8°C	18.3°C	21°C
26 August	19.7°C	19.5°C	18.3°C	21.1°C
27 August	20.1°C	19.8°C	18.5°C	21.4°C
28 August	19.9°C	19.7°C	18.5°C	21.2°C
29 August	19.7°C	20°C	18.6°C	21.1°C
30 August	19.3°C	20.3°C	18.6°C	21.2°C
31 August	19.5°C	20°C	18.4°C	21°C

Average water temperature in Trial Bay in August over a decade

2016	2017	2018	2019	2020
20.3°C	20.3°C	19.3°C	19.7°C	19.5°C

2021	2022	2023	2024	2025
19.8°C	18.5°C	19.8°C	19.5°C	20.2°C

Trial Bay water temperature during other months:

You can also view information about water temperature for other months by clicking on the month button below

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Our report for Trial Bay is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.