Water temperature in Adelaide in May

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Is it warm enough to swim in Adelaide in May? Average water temperature in Adelaide in May is 18.1°C and therefore is not suitable for comfortable swimming. The warmest sea in Adelaide in May is 19.7°C, and the coldest is 16.4°C. Average high air temperature in Adelaide in May is 19°C, and average low temperature is 10°C. To find out the sea temperature today and in the coming days, go to Current sea temperature in Adelaide

Changes water temperature in Adelaide in May 2025, 2024

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

Sea temperature

Tides

Weather forecast

You can choose any other years:

Day	2025	2024	Min	Max
1 May	19.2°C	16.5°C	16.5°C	19.3°C
2 May	18.7°C	16.9°C	16.9°C	19.2°C
3 May	18.9°C	17.5°C	17.5°C	19.2°C
4 May	19.1°C	17.3°C	17.3°C	19.1°C
5 May	19.1°C	17.2°C	17.2°C	19.1°C
6 May	19.2°C	16.8°C	16.8°C	19.3°C
7 May	19.1°C	16.7°C	16.7°C	19.3°C
8 May	19.2°C	16.6°C	16.6°C	19.5°C
9 May	19.3°C	16.5°C	16.5°C	19.7°C
10 May	19.2°C	16.5°C	16.5°C	19.5°C
11 May	19.2°C	16.6°C	16.6°C	19.2°C
12 May	19.3°C	16.8°C	16.8°C	19.3°C
13 May	19.3°C	16.7°C	16.7°C	19.3°C
14 May	19.2°C	16.9°C	16.9°C	19.2°C
15 May	19.1°C	16.4°C	16.4°C	19.1°C

Day	2025	2024	Min	Max
16 May	19.1°C	17°C	17°C	19.1°C
17 May	19°C	17.2°C	17.2°C	19°C
18 May	18.9°C	17°C	17°C	18.9°C
19 May	18.8°C	16.9°C	16.9°C	18.8°C
20 May	18.8°C	17.2°C	17.2°C	18.8°C
21 May	18.7°C	17.1°C	17.1°C	18.7°C
22 May	18.7°C	17.1°C	17.1°C	18.7°C
23 May	18.7°C	16.8°C	16.8°C	18.7°C
24 May	18.6°C	16.7°C	16.7°C	18.6°C
25 May	18.4°C	16.9°C	16.9°C	18.5°C
26 May	18.5°C	16.7°C	16.7°C	18.5°C
27 May	18.3°C	16.8°C	16.8°C	18.5°C
28 May	18.4°C	16.8°C	16.8°C	18.4°C
29 May	18.4°C	17.2°C	17.2°C	18.5°C
30 May	18.3°C	17.1°C	17.1°C	18.6°C
31 May	18.4°C	17°C	17°C	18.4°C

Average water temperature in Adelaide in May over a decade

2016	2017	2018	2019	2020
18°C	18.1°C	18.5°C	18.1°C	17.7°C

2021	2022	2023	2024	2025
18.2°C	17.9°C	18°C	16.9°C	18.9°C

Adelaide sea state in May

Chart comparing the height of waves in Adelaide in May 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.

Weather and climate in Adelaide in May

This data display average monthly climate indicators in Adelaide in May based on our historical weather readings over a period of ten years. In addition to temperature, we include data on the number of rainy and sunny days so you can have all the information about your destination before your trip

Average HIGH temperature19°C
Average LOW temperature10°C
Average humidity
55
Average rainfall days12 days
Average rainfall2.4''/61mm
Average daylight10h
Average sunshine5.4h
Average UV index3

Adelaide 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 May. In addition, the maximum and minimum water temperatures for that month, recorded over the last decade, are shown

	Avr	Min	Max
Port Lincoln	17°C	15.2°C	18.9°C
Marion Bay	17.2°C	15.7°C	19.1°C
Stokes Bay	17.2°C	15.1°C	19.2°C
Vivonne Bay	17.1°C	14.5°C	18.9°C
Kangaroo Island	17.1°C	14.4°C	18.9°C
Tumby Bay	16.8°C	14.7°C	19.4°C
Coffin Bay	16.7°C	13.3°C	18.8°C
Point Turton	16.7°C	14.5°C	19.1°C
Kingscote	16.7°C	14.9°C	18.8°C
Port Neill	17.2°C	14.9°C	19.9°C

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Our report for Adelaide 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