August weather forecast and climate
Cape Town, South Africa

Cape Town, South Africa, with the surrounding calm clear waters and several mountains
Cape Town, South Africa, with the surrounding calm clear waters and several mountains

Weather in August

August, the last month of the winter, in Cape Town, is also an enjoyable month, with average temperature ranging between min 10.2°C (50.4°F) and max 16.6°C (61.9°F).

Temperature

August is the coldest month, with an average high-temperature of 16.6°C (61.9°F) and an average low-temperature of 10.2°C (50.4°F).

Humidity

Months with the highest humidity are June, August and September, with an average relative humidity of 74%.

Rainfall

In Cape Town, in August, it is raining for 13.7 days, with typically 70mm (2.76") of accumulated precipitation. Throughout the year, in Cape Town, there are 111 rainfall days, and 435mm (17.13") of precipitation is accumulated.

Sea temperature

July through September, with an average sea temperature of 15.3°C (59.5°F), are months with the coldest seawater in Cape Town.
Note: For swimming, a surface water temperature of 15.3°C (59.5°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).

Daylight

In August, the average length of the day in Cape Town, South Africa, is 10.9h.

Sunshine

In August, the average sunshine in Cape Town is 7.9h.

UV index

Months with the lowest UV index are May through September, with an average maximum UV index of 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 4 in August interpret into the following advice:
Take precautions - Protection against the skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the coldest month in Cape Town?

The coldest month is August, with an average high-temperature of 16.6°C (61.9°F) and an average low-temperature of 10.2°C (50.4°F).

What is the temperature in August in Cape Town?

The average high-temperature, in August, is 16.6°C (61.9°F), while the average low-temperature is 10.2°C (50.4°F).

What is the most humid month in Cape Town?

June, August and September, with an average relative humidity of 74%, are most humid months in Cape Town, South Africa.

What is the average humidity in August in Cape Town?

The average relative humidity in August in Cape Town, South Africa, is 74%.

How much does it rain in Cape Town in August?

In Cape Town, South Africa, in August, during 13.7 rainfall days, 70mm (2.76") of precipitation is typically accumulated.

When is the sea coldest in Cape Town?

July through September, with an average sea temperature of 15.3°C (59.5°F), are months with the coldest seawater.

What is the sea temperature in August in Cape Town?

In August, the average sea temperature in Cape Town, South Africa, is 15.3°C (59.5°F). For most, swimming in 15.3°C (59.5°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).

How many hours of daylight does Cape Town have in August?

In Cape Town, South Africa, the average length of the day in August is 10.9h.

How many hours of sunshine does Cape Town have in August?

In Cape Town, South Africa, the average sunshine in August is 7.9h.

What is the month with the lowest UV index in Cape Town?

Months with the lowest UV index in Cape Town, South Africa, are May through September, with an average maximum UV index of 4.

What is the UV index intensity in August in Cape Town?

The average daily maximum UV index in August in Cape Town, South Africa, is 4. A UV Index of 3 to 5 symbolizes a moderate health threat from unsafe exposure to the Sun's UV rays.

Average temperature in August
Cape Town, South Africa

Average temperature in August - Cape Town, South Africa
  • Average high temperature in August: 16.6°C

The warmest month (with the highest average high temperature) is February (26.1°C).
The month with the lowest average high temperature is August (16.6°C).

  • Average low temperature in August: 10.2°C

The month with the highest average low temperature is January (17.7°C).
The coldest months (with the lowest average low temperature) are July and August (10.2°C).

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Average pressure in August
Cape Town, South Africa

Average pressure in August - Cape Town, South Africa
  • Average pressure in August: 1020.4mbar

The month with the highest atmospheric pressure is July (1022mbar).
The month with the lowest atmospheric pressure is February (1013.4mbar).

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Average wind speed in August
Cape Town, South Africa

Average wind speed in August - Cape Town, South Africa
  • Average wind speed in August: 14.4km/h

The windiest month (with the highest average wind speed) is January (17.6km/h).
The calmest month (with the lowest average wind speed) is May (13.4km/h).

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Average humidity in August
Cape Town, South Africa

Average humidity in August - Cape Town, South Africa
  • Average humidity in August: 74%

Months with the highest relative humidity are June, August and September (74%).
Months with the lowest relative humidity are February, April and December (68%).

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Average rainfall in August
Cape Town, South Africa

Average rainfall in August - Cape Town, South Africa
  • Average rainfall in August: 70mm

The wettest month (with the highest rainfall) is June (98mm).
The driest month (with the least rainfall) is February (7mm).

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Average rainfall days in August
Cape Town, South Africa

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 June (13.8 days).
The month with the least rainy days is February (4.9 days).

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Average sea temperature in August
Cape Town, South Africa

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).
The coldest months (with the lowest average sea temperature) are July, August and September (15.3°C).

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Average daylight in August /
Average sunshine in August
Cape Town, South Africa

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 the shortest days is June (Average daylight: 9.9h).

  • Average sunshine in August: 7.9h

The month with the most sunshine is December (Average sunshine: 11.1h).
The month with the least sunshine is June (Average sunshine: 6h).

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Average sunshine days in August
Cape Town, South Africa

Average sunshine days in August - Cape Town, South Africa
  • Average sunshine days in August: 15.3 days

The month with the most sunshine days is January (23.1 days).
The month with the least sunshine days is June (14.6 days).

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Average UV index in August
Cape Town, South Africa

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

Months with the highest UV index are January, February and December (UV index 6).
Months with the lowest UV index are May, June, July, August and September (UV index 4).

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Average cloud cover in August
Cape Town, South Africa

Average cloud cover in August - Cape Town, South Africa
  • Average cloud cover in August: 32

The month with the most cloud cover is June (Cloud cover 34).
The month with the least cloud cover is February (Cloud cover 15).

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Average visibility in August
Cape Town, South Africa

Average visibility in August - Cape Town, South Africa
  • Average visibility in August: 10km

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

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