Weather averages
MonthHigh / Low(°C)Rain
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CAPE TOWN
SOUTH AFRICA
SOUTH AFRICA
Long-term weather forecast
An aerial view of Cape Town, South Africa, with the surrounding calm clear waters and several mountains in view
The average temperature in May Cape Town, South Africa
- The average high temperature in May: 20.3°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 May: 9.4°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 May Cape Town, South Africa
- The average humidity in May: 81%
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 May Cape Town, South Africa
- The average rainfall in May: 69mm
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 May Cape Town, South Africa
- The average rainfall days in May: 11.4 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 May Cape Town, South Africa
- The average sea temperature in May: 16.4°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).
The average daylight in May / The average sunshine in May Cape Town, South Africa
- The average daylight in May: 10h
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 May: 6.6h
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 May Cape Town, South Africa
- The average UV index in May: 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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