Water temperature in Summerstrand in September

Is it warm enough to swim in Summerstrand in September? Average water temperature in Summerstrand in September is 17.3°C and therefore is not suitable for comfortable swimming. The warmest sea in Summerstrand in September is 19.7°C, and the coldest is 15.4°C. To find out the sea temperature today and in the coming days, go to Current sea temperature in Summerstrand

Changes water temperature in Summerstrand in September 2025, 2024

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

Sea temperature

Sea state

Weather forecast

You can choose any other years:

Day	2025	2024	Min	Max
1 September	17.7°C	17.5°C	15.7°C	19°C
2 September	18.2°C	17.9°C	15.6°C	18.8°C
3 September	17.8°C	17.8°C	15.6°C	19.7°C
4 September	18.1°C	17.8°C	15.5°C	19.5°C
5 September	17.8°C	17.6°C	15.9°C	19.2°C
6 September	18.1°C	17.6°C	15.8°C	18.8°C
7 September	18°C	17.6°C	16.3°C	18.6°C
8 September		17.5°C	16.3°C	18.2°C
9 September		17.5°C	16.3°C	18.2°C
10 September		17.7°C	15.8°C	18.4°C
11 September		17.6°C	16.6°C	18.5°C
12 September		17.7°C	16.4°C	19.4°C
13 September		17.7°C	16.6°C	18.2°C
14 September		17.8°C	15.6°C	18.9°C
15 September		17.8°C	15.8°C	18.4°C

Day	2024	Min	Max
16 September	17.5°C	16.4°C	19.1°C
17 September	17.8°C	16.4°C	19.1°C
18 September	18°C	16.4°C	19.3°C
19 September	17.6°C	16.2°C	19.1°C
20 September	17.8°C	16.5°C	17.8°C
21 September	17.5°C	16.6°C	18.4°C
22 September	17.7°C	16.3°C	18.3°C
23 September	17.7°C	16.3°C	18.7°C
24 September	17.5°C	16.5°C	18.9°C
25 September	17.6°C	16.1°C	18.5°C
26 September	17.3°C	16.5°C	19°C
27 September	17.3°C	15.8°C	18.6°C
28 September	17.5°C	15.4°C	18.1°C
29 September	17°C	15.5°C	18°C
30 September	17°C	15.8°C	18.7°C

Summerstrand water temp chart in September

Average water temperature in Summerstrand in September over a decade

2015	2016	2017	2018	2019
17.5°C	17°C	16.2°C	18.2°C	18.3°C

2020	2021	2022	2023	2024
17°C	16.5°C	16.9°C	17.8°C	17.6°C

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

	Avr	Min	Max
Plettenberg Bay	16.6°C	14.8°C	18.7°C
Knysna	16.5°C	13.7°C	18.8°C
Buffelsbaai	16.5°C	13.6°C	18.7°C
Wilderness	16.4°C	14.3°C	18.8°C
Victoria Bay	16.4°C	14.4°C	18.8°C
George	16.4°C	14.2°C	18.9°C
Mossel Bay	16.3°C	14.4°C	18.7°C
Hartenbos	16.3°C	14.5°C	18.5°C
Stilbaai	16°C	14.5°C	18.4°C
Coffee Bay	20.7°C	18.5°C	22.3°C

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Our report for Summerstrand 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.

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Date (day and month)

Water temperature: min 16°C

Average temperature Maximum temperature