Water temperature in Cape of Good Hope

This data the coastal Cape of Good Hope sea water temperature today, tomorrow and the upcoming days. Besides, you can also get information about the weather and surf forecast, as well as the data on sunrise / sunset and moonrise / moonset at a given point on any given day.

Current sea temperature in Cape of Good Hope

Water temperature in Cape of Good Hope today is 15.2°C. Based on our historical data over a period of ten years, the warmest water in this day in Cape of Good Hope was recorded in 2007 and was 16.5°C, and the coldest was recorded in 2012 at 14.2°C. Sea water temperature in Cape of Good Hope is expected to be constant 15.2°C in the next 10 days. September average water temperature in Cape of Good Hope is 15.2°C, the minimum temperature is 13.2°C, and the maximum is 16.9°C.

The swimming season in Cape of Good Hope lasts from January to February. During those months, Cape of Good Hope water temperature does not drop below 20°C and therefore suitable for comfortable swimming. The average water temperature in Cape of Good Hope in winter reaches 15.3°C, in spring 15.9°C, in summer the average temperature rises to 18.7°C, and in autumn it is 16.7°C.

Cape of Good Hope water temperature now

The sea salinity in Cape of Good Hope is 34.18‰, and the average salinity of the World Ocean is 35‰.

Surf Forecast in Cape of Good Hope for today

Another important indicators for a comfortable holiday on the beach are the presence and height of the waves, as well as the speed and direction of the wind. Please find below data on the swell size for Cape of Good Hope. We calculate the swell size based on the mean wave height (trough to crest) of each third highest wave. For more information on surf forecasts for the next ten days, please visit sea state forecast Cape of Good Hope. Data in table shown for 8 September 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)

Surf report in Cape of Good Hope

Cape of Good Hope weather forecast

Current temperature and weather

Data in a table show Cape of Good Hope temperature today (8 September 2025). For more information and forecast for a few days, go to the weather forecast Cape of Good Hope.

0-3 h	3-6 h	6-9 h	9-12 h
14.2°C	14.4°C	14.7°C	15.8°C

12-15 h	15-18 h	18-21 h	21-24 h
18.5°C	19.8°C	18.5°C	16.7°C

Cape of Good Hope water temperature by month

These figures shows the average, minimum and maximum monthly sea temperature in Cape of Good Hope. In addition to the table values, the graph below displays of changes average surface temperature during the year. Values are calculated based on the data over the past 10 years. Using them, you can check the water temperature in Cape of Good Hope on any day of this period that interests you. Click on the month link and you will see a table for each day, or alternatively you can view the temperature curve of the month and select 2 different years you want to compare, either in a table or as a curve

Chart monthly average water temperature in Cape of Good Hope

The nearest beaches and cities from Cape of Good Hope with the water temperature today, as well as the air temperature and the state of the weather during the day and the average wave height for today

	Water	Weather		Wave
Windmill Beach	15.2°C	20°C		1.95 m
Kalk Bay	16°C	20°C		2.35 m
Muizenberg	16°C	20°C		2.35 m
Fish Hoek	16°C	20°C		2.35 m
False Bay	15.4°C	20°C		1.55 m
Kommetjie	13.6°C	20°C		2.46 m
Rooiels	15.2°C	24°C		2.16 m
Noordhoek	13.1°C	20°C		2.46 m
Hout Bay	12.9°C	23°C		2.31 m
Llandudno	12.9°C	23°C		2.31 m

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Our report for Cape of Good Hope 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.