Water temperature in Second Valley in May

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Is it warm enough to swim in Second Valley in May? Average water temperature in Second Valley in May is 17.6°C and therefore is not suitable for comfortable swimming. The warmest sea in Second Valley in May is 19.8°C, and the coldest is 15.6°C. To find out the sea temperature today and in the coming days, go to Current sea temperature in Second Valley

Changes water temperature in Second Valley in May 2025, 2024

To get an accurate forecast for the water temperature in Second Valley for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Second Valley, 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	19.8°C	17.8°C	17.6°C	19.8°C
2 May	19.7°C	17.6°C	17.6°C	19.7°C
3 May	19.6°C	17.7°C	17.7°C	19.6°C
4 May	19.7°C	17.6°C	17.6°C	19.7°C
5 May	19.5°C	17.7°C	17.4°C	19.5°C
6 May	19.4°C	17.7°C	17.2°C	19.4°C
7 May	19.3°C	17.8°C	17°C	19.3°C
8 May	19.2°C	17.7°C	17.1°C	19.2°C
9 May	19.1°C	17.7°C	17°C	19.1°C
10 May	19°C	17.6°C	17°C	19°C
11 May	19°C	17.4°C	17.1°C	19°C
12 May	19°C	17.3°C	16.7°C	19°C
13 May	18.7°C	17.5°C	16.5°C	18.9°C
14 May	18.6°C	17.3°C	16.5°C	18.6°C
15 May	18.7°C	17°C	16.2°C	18.7°C

Day	2025	2024	Min	Max
16 May	18.7°C	17.1°C	16.4°C	18.7°C
17 May	18.5°C	17.3°C	16.4°C	18.5°C
18 May	18.4°C	17.1°C	16.4°C	18.4°C
19 May	18.3°C	16.9°C	16.3°C	18.3°C
20 May	18.1°C	16.8°C	16.2°C	18.1°C
21 May	18.1°C	16.8°C	15.9°C	18.1°C
22 May	18°C	16.7°C	15.8°C	18°C
23 May	17.9°C	16.9°C	15.8°C	17.9°C
24 May	17.9°C	16.7°C	16°C	17.9°C
25 May	17.7°C	16.8°C	15.9°C	17.8°C
26 May	17.6°C	16.8°C	16.1°C	17.6°C
27 May	17.5°C	16.6°C	16°C	17.6°C
28 May	17.4°C	16.5°C	15.8°C	17.5°C
29 May	17.3°C	16.2°C	15.8°C	17.4°C
30 May	17.4°C	16.4°C	15.7°C	17.4°C
31 May	17.2°C	16°C	15.6°C	17.2°C

Average water temperature in Second Valley in May over a decade

2016	2017	2018	2019	2020
17.8°C	18°C	18°C	17.6°C	16.9°C

2021	2022	2023	2024	2025
17.8°C	17.6°C	17.4°C	17.1°C	18.5°C

Second Valley sea state in May

Chart comparing the height of waves in Second Valley 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.

Second Valley 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
Rapid Bay	17.6°C	15.6°C	19.7°C
Carrickalinga	17.7°C	15.6°C	19.8°C
Cape Jervis	17.4°C	15.4°C	19.6°C
Penneshaw	16.9°C	15.1°C	19°C
Aldinga	17.6°C	15.5°C	19.8°C
Maslin Beach	17.6°C	15.5°C	19.8°C
Seaford	17.6°C	15.5°C	19.8°C
Victor Harbor	16.6°C	14.3°C	18.5°C
Encounter Bay	16.6°C	14.3°C	18.6°C
Christies Beach	17.5°C	15.5°C	19.8°C

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Our report for Second Valley 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