August weather forecast and climate
Cape Town, South Africa

An aerial view of Cape Town, South Africa, with the surrounding calm clear waters and several mountains in view
An aerial view of Cape Town, South Africa, with the surrounding calm clear waters and several mountains in view

What is the temperature in August in Cape Town?

In Cape Town, in August, the average high-temperature is 17.8°C (64°F), and the average low-temperature is 7.5°C (45.5°F).

How many days does it rain in August in Cape Town?

In Cape Town, South Africa, in August, during 13.7 rainfall days, typically 77mm (3") of precipitation is accumulated.
Average temperature in August - Cape Town, South Africa
  • Average high temperature in August: 17.8°C

The warmest month (with the highest average high temperature) is February (26.5°C).
The month with the lowest average high temperature is July (17.5°C).

  • Average low temperature in August: 7.5°C

The month with the highest average low temperature is January (15.7°C).
The coldest month (with the lowest average low temperature) is July (7°C).

Average humidity in August - Cape Town, South Africa
  • Average humidity in August: 80%

Months with the highest relative humidity are May, June and July (81%).
Months with the lowest relative humidity are January, November and December (71%).

Average rainfall in August - Cape Town, South Africa
  • Average rainfall in August: 77mm

The wettest month (with the highest rainfall) is June (93mm).
The driest month (with the lowest rainfall) is November (14mm).

Average rainfall days in August - Cape Town, South Africa
  • Average rainfall days in August: 13.7 days

The month with the highest number of rainy days is August (13.7 days).
The month with the lowest number of rainy days is February (4.6 days).

Average sea temperature in August - Cape Town, South Africa
  • Average sea temperature in August: 15.3°C

The best month for swimming (with the highest average sea temperature) is January (18.5°C).
Coldest months (with the lowest average sea temperature) are July, August and September (15.3°C).

Average daylight in August / Average sunshine in August - Cape Town, South Africa
  • Average daylight in August: 10.9h

The month with the longest days is December (Average daylight: 14.4h).
The month with shortest days is June (Average daylight: 9.9h).

  • Average sunshine in August: 6.8h

The month with most sunshine is January (Average sunshine: 10.9h).
The month with least sunshine is June (Average sunshine: 5.8h).

Average UV index in August - Cape Town, South Africa
  • Average UV index in August: 4

Months with the highest UV index are January and December (UV index 12).
Months with the lowest UV index are June and July (UV index 3).

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