Water temperature in Mornington (VIC) in August

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Is it warm enough to swim in Mornington in August? Average water temperature in Mornington in August is 11°C and therefore is not suitable for comfortable swimming. The warmest sea in Mornington in August is 12.4°C, and the coldest is 9.9°C. To find out the sea temperature today and in the coming days, go to Current sea temperature in Mornington

Changes water temperature in Mornington in August 2025, 2024

To get an accurate forecast for the water temperature in Mornington for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Mornington, 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

Tides

Weather forecast

You can choose any other years:

Day	2025	2024	Min	Max
1 August	10.8°C	10.6°C	10.1°C	11.5°C
2 August	10.7°C	10.8°C	10.1°C	11.5°C
3 August	10.7°C	10.6°C	10.1°C	11.6°C
4 August	10.8°C	10.7°C	10°C	11.4°C
5 August	11°C	10.5°C	10°C	11.3°C
6 August	10.9°C	10.7°C	10.1°C	11.3°C
7 August	10.9°C	10.5°C	10.1°C	11.4°C
8 August	11.1°C	10.6°C	10°C	11.4°C
9 August	11.2°C	10.6°C	10.1°C	11.4°C
10 August	11.1°C	10.7°C	10°C	11.4°C
11 August	11.2°C	11°C	10.1°C	11.4°C
12 August	11.1°C	11.1°C	10.2°C	11.5°C
13 August	11.1°C	11.4°C	10.2°C	11.5°C
14 August	11.1°C	11.5°C	10.4°C	11.5°C
15 August	11.2°C	11.5°C	10.3°C	11.6°C

Day	2025	2024	Min	Max
16 August	11.2°C	11.5°C	10.4°C	11.6°C
17 August	11.1°C	11.4°C	10.2°C	11.6°C
18 August	11°C	11.7°C	10.2°C	11.7°C
19 August	11°C	11.7°C	10.2°C	11.7°C
20 August	11.2°C	11.7°C	10°C	11.7°C
21 August	11.3°C	11.9°C	9.9°C	11.9°C
22 August	11.3°C	11.9°C	10.1°C	11.9°C
23 August	11.2°C	12°C	10.2°C	12°C
24 August	11.6°C	12.4°C	10.4°C	12.4°C
25 August	11.5°C	12.4°C	10.4°C	12.4°C
26 August	11.5°C	12.4°C	10.5°C	12.4°C
27 August	11.7°C	12.3°C	10.5°C	12.3°C
28 August	11.7°C	12.3°C	10.5°C	12.3°C
29 August	11.5°C	12.3°C	10.6°C	12.3°C
30 August	11.6°C	12.3°C	10.6°C	12.3°C
31 August	11.5°C	12.3°C	10.6°C	12.3°C

Average water temperature in Mornington in August over a decade

2016	2017	2018	2019	2020
11.1°C	11.1°C	10.4°C	10.9°C	11.1°C

2021	2022	2023	2024	2025
11.2°C	10.9°C	11.6°C	11.5°C	10.9°C

Mornington sea state in August

Chart comparing the height of waves in Mornington in August over the past years. The red line indicates the height of the waves when swimming in the sea is prohibited. To view the current sea conditions, click on the graph.

Mornington water temperature during other months:

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

Temperature in neighboring cities

The nearest locations with the average water temperature in August. In addition, the maximum and minimum water temperatures for that month, recorded over the last decade, are shown

	Avr	Min	Max
Mount Eliza	11°C	9.9°C	12.4°C
Frankston	11°C	9.8°C	12.4°C
Mount Martha	11.1°C	10°C	12.4°C
Carrum	11°C	9.9°C	12.5°C
Seaford	11°C	9.9°C	12.5°C
Parkdale	11°C	9.8°C	12.5°C
Mordialloc	11°C	9.8°C	12.5°C
Aspendale	11°C	9.8°C	12.5°C
Edithvale	11°C	9.8°C	12.5°C
Chelsea	11°C	9.8°C	12.5°C

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Our report for Mornington 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