Water temperature in Arniston in March

Is it warm enough to swim in Arniston in March? Average water temperature in Arniston in March is 20.5°C and therefore suitable for comfortable swimming. The warmest sea in Arniston in March is 22.5°C, and the coldest is 17.7°C. To find out the sea temperature today and in the coming days, go to Current sea temperature in Arniston

Changes water temperature in Arniston in March 2025, 2024

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

Sea temperature

Tides

Weather forecast

You can choose any other years:

Day	2025	2024	Min	Max
1 March	20.6°C	19.4°C	19.4°C	22.3°C
2 March	20.6°C	19.5°C	19.5°C	22.4°C
3 March	20.4°C	19.6°C	19.6°C	22.5°C
4 March	20.7°C	19.5°C	19.5°C	22.5°C
5 March	20.8°C	19.3°C	19.3°C	22.4°C
6 March	21.2°C	19.3°C	19.3°C	22.2°C
7 March	21.3°C	19.6°C	19.6°C	22.1°C
8 March	21.6°C	20.1°C	20°C	21.8°C
9 March	21.5°C	20.2°C	19.6°C	21.8°C
10 March	21.1°C	20.4°C	20.2°C	21.7°C
11 March	20.7°C	20.4°C	20.2°C	21.6°C
12 March	21.2°C	20.1°C	20°C	21.7°C
13 March	21.3°C	20.2°C	19.9°C	22°C
14 March	20.3°C	20.4°C	19.9°C	22°C
15 March	19.2°C	20.2°C	19.2°C	22°C

Day	2025	2024	Min	Max
16 March	18.5°C	20.1°C	18.5°C	21.8°C
17 March	18.9°C	20.1°C	18.9°C	21.7°C
18 March	18.3°C	19.9°C	18.3°C	21.6°C
19 March	18.1°C	19.7°C	18.1°C	21.5°C
20 March	18.5°C	19.7°C	18.5°C	21.5°C
21 March	18.8°C	19.6°C	18.8°C	21.5°C
22 March	19.1°C	19.6°C	19.1°C	21.3°C
23 March	19.3°C	19.7°C	19.3°C	21.3°C
24 March	18.9°C	19.2°C	18.9°C	21°C
25 March	18.5°C	19°C	18.5°C	20.9°C
26 March	18.8°C	18.9°C	18.7°C	21°C
27 March	19.2°C	19.2°C	17.7°C	20.9°C
28 March	18.7°C	18.9°C	18.1°C	20.9°C
29 March	18.7°C	19.1°C	18.3°C	20.8°C
30 March	18.9°C	18.9°C	18.3°C	20.7°C
31 March	18.7°C	19.3°C	18.2°C	20.7°C

Average water temperature in Arniston in March over a decade

2016	2017	2018	2019	2020
20.4°C	20.7°C	20.2°C	20.7°C	20°C

2021	2022	2023	2024	2025
20.2°C	20.4°C	19.8°C	19.6°C	19.8°C

Arniston sea state in March

Chart comparing the height of waves in Arniston in March 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.

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

	Avr	Min	Max
Infanta	20.5°C	17.8°C	22.7°C
Witsand	20.5°C	17.3°C	22.7°C
Franskraal	17.8°C	13.2°C	20.6°C
Gansbaai	17.7°C	12.8°C	20.5°C
Grotto Beach	17.6°C	13.3°C	20.3°C
Hermanus	17.6°C	13.2°C	20.3°C
Onrus	17.5°C	13.2°C	20.4°C
Vermont	17.5°C	13.3°C	20.4°C
Kleinmond	17.4°C	13.8°C	20.4°C
Stilbaai	20.4°C	17.1°C	22.7°C

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Our report for Arniston 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