Cape Town
South Africa
Long-term weather forecast
Long-term weather forecast

December 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
  • The average high temperature in December: 24.9°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).

  • The average low temperature in December: 14.9°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).

  • The average humidity in December: 71%

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

  • The average rainfall in December: 17mm

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

  • The average rainfall days in December: 6.3 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).

  • The average sea temperature in December: 18°C

Best months for swimming (with the highest average sea temperature) are January and February (19°C).
Coldest months (with the lowest average sea temperature) are July, August and September (15°C).

  • The average daylight in December: 14h

Months with the longest days are January, November and December (Average daylight: 14h).
Months with shortest days are May, June and July (Average daylight: 10h).

  • The average sunshine in December: 10.8h

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

  • The average UV index in December: 12

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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