Water temperature in Cape Town

This data the coastal Cape Town 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 Town

Water temperature in Cape Town today is 16°C. Based on our historical data over a period of ten years, the warmest water in this day in the Atlantic Ocean near Cape Town was recorded in 2007 and was 17.2°C, and the coldest was recorded in 2024 at 14.4°C. Sea water temperature in Cape Town is expected to rise to 16.2°C in the next 10 days. September average water temperature in Cape Town is 16.2°C, the minimum temperature is 14.4°C, and the maximum is 18.5°C.

The swimming season in Cape Town lasts from December to February. During those months, Cape Town water temperature does not drop below 20°C and therefore suitable for comfortable swimming. The average water temperature in Cape Town in winter reaches 16.5°C, in spring 16.8°C, in summer the average temperature rises to 19.1°C, and in autumn it is 18°C.

Cape Town water temperature now

The sea salinity in Cape Town is 35.13‰, and the average salinity of the World Ocean is 35‰.

Surf Forecast in Cape Town 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 Town. 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 Town. 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 Town

Cape Town weather forecast

Current temperature and weather

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

0-3 h	3-6 h	6-9 h	9-12 h
14.3°C	14.5°C	14.9°C	15.7°C

12-15 h	15-18 h	18-21 h	21-24 h
17.7°C	18.9°C	18.1°C	16.7°C

Cape Town water temperature by month

These figures shows the average, minimum and maximum monthly sea temperature in Cape Town. 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 Town 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 Town

The nearest beaches and cities from Cape Town 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
Robben Island	14.3°C	22°C		1.88 m
Yzerfontein	13°C	21°C		2.17 m
Grotto Bay	12.6°C	24°C		2 m
Oudekraal Beach	12.9°C	22°C		2.28 m
Hout Bay	12.9°C	23°C		2.31 m
Llandudno	12.9°C	23°C		2.31 m
Sea Point	13.8°C	22°C		2.24 m
Camps Bay	13.4°C	22°C		2.28 m
Clifton	13.4°C	22°C		2.28 m
Bakoven	13.4°C	22°C		2.28 m

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Cidade do Cabo

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Our report for Cape Town 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.