Water temperature in Half Moon Bay Beach (VIC) in January

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Is it warm enough to swim in Half Moon Bay Beach in January? Average water temperature in Half Moon Bay Beach in January is 21°C and therefore suitable for comfortable swimming. The warmest sea in Half Moon Bay Beach in January is 24.5°C, and the coldest is 17.9°C. To find out the sea temperature today and in the coming days, go to Current sea temperature in Half Moon Bay Beach

Changes water temperature in Half Moon Bay Beach in January 2026, 2025

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

Sea temperature

Sea state

Weather forecast

You can choose any other years:

Day	2026	2025	Min	Max
1 January	18.7°C	21.1°C	17.9°C	22.4°C
2 January	19.1°C	20.9°C	17.9°C	22.1°C
3 January	19.4°C	21.4°C	19°C	22.1°C
4 January	19.4°C	21.8°C	18.3°C	22.5°C
5 January	19.5°C	21.7°C	18.3°C	22.2°C
6 January	20.3°C	21.3°C	18.9°C	22.1°C
7 January	20.7°C	21.1°C	18.4°C	22°C
8 January	20.7°C	21.1°C	18.8°C	22.1°C
9 January	21°C	21.2°C	19.1°C	21.9°C
10 January	20.8°C	22°C	18.6°C	22°C
11 January	20.5°C	22.4°C	18.8°C	22.4°C
12 January	20.1°C	22.3°C	19.7°C	22.6°C
13 January	19.6°C	22°C	18.9°C	22.5°C
14 January	20.1°C	22.5°C	18.8°C	22.9°C
15 January	20.2°C	22.3°C	20.2°C	22.5°C

Day	2026	2025	Min	Max
16 January	20.1°C	22.1°C	20.1°C	23.2°C
17 January	20.4°C	22.2°C	19.1°C	23.1°C
18 January	20.4°C	22°C	19.1°C	22.5°C
19 January	20.8°C	22.4°C	19.1°C	22.8°C
20 January	20.9°C	22.8°C	19.1°C	22.8°C
21 January	20.8°C	22.7°C	19.1°C	22.7°C
22 January	20.5°C	22.6°C	18.9°C	23.2°C
23 January	20.8°C	22.2°C	19°C	23.4°C
24 January	21.2°C	21.8°C	18.9°C	24°C
25 January	21.1°C	22.1°C	18.9°C	23.7°C
26 January	21.7°C	22.3°C	18.8°C	24.2°C
27 January		22.2°C	20.7°C	24.5°C
28 January		22.3°C	18.8°C	24°C
29 January		21.9°C	19.2°C	23.7°C
30 January		21.6°C	19.2°C	23.7°C
31 January		21.7°C	19.1°C	24.2°C

Half Moon Bay Beach water temp chart in January

Average water temperature in Half Moon Bay Beach in January over a decade

2016	2017	2018	2019	2020
21.2°C	21.3°C	22°C	22.8°C	21°C

2021	2022	2023	2024	2025
20.5°C	22.5°C	21.2°C	21.4°C	21.9°C

Half Moon Bay Beach 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 Half Moon Bay Beach 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.

Region

Date (day and month)

Water temperature: min 16°C

Average temperature Maximum temperature