Average monthly water temperature in Cape Town, South Africa
On this page you find the mean water temperature over the year in Cape Town (Western Cape), South Africa. Dive into the water temperature trends, highlighting the best times for swimming and other activities.
In Cape Town, the water undergoes seasonal changes. The warmest month is February, with an average water temperature of 20°C (68°F).
The coldest water temperature month, August, has an average temperature of 14°C (57°F). It may not be the ideal time for a swim.
Cape Town Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Cape Town - and find the best time to visit.
Cape Town 3-Day Forecast
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Cape Town climate overview or explore weather in South Africa.
Popular this month
Where to go in August - average daytime high across popular destinations.
Pretoria
24°C (75°F) Durban
24°C (75°F) Johannesburg22°C (72°F) Gqeberha20°C (68°F) Knysna18°C (64°F) Cape Town17°C (63°F) Hermanus
17°C (63°F) Stellenbosch18°C (64°F) 
Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
Paraglide at the Western Cape
In summer months (December to March) it is warm, sunny and dry in Cape Town. For many, this is the ideal time to visit and paraglide at the Cape.
One of South Africa's most spectacular private game reserves
Sabi Sand Game Reserve is one of South Africa's most spectacular private game reserves. The chance that you see the entire Big Five is high in winter (June - August).
Stay in the world's largest open-air gallery
Vast mountains, beautiful nature, tranquility and the possibility of hiking and seeing fascinating rock paintings. This can all be experienced at the Cederberg Mountains.
Kwazulu Natal
Countless beautiful landscapes, a colorful collection of cultures, wildlife parks, busy and deserted beaches, lively cities, small villages and a subtropical climate.