Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average sea temperature in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
Cape Town transitions into May recording an average high-temperature of a comfortable 19.7°C (67.5°F), closely aligning with the preceding month's temperature. Throughout the nights in May, Cape Town experiences an average low-temperature of 13.1°C (55.6°F).Humidity
The average relative humidity in May is 73%.Rainfall
In May, the rain falls for 11.1 days. Throughout May, 46mm (1.81") of precipitation is accumulated. Throughout the year, in Cape Town, there are 111 rainfall days, and 435mm (17.13") of precipitation is accumulated.Sea temperature
In Cape Town, in May, the average water temperature is 16.4°C (61.5°F).Note: The enjoyment of swimming decreases for most when the surface water temperature is 16.4°C (61.5°F). Breathing control becomes increasingly challenging as temperatures descend below 21°C (69.8°F).
Daylight
The average length of the day in May is 10h and 22min.On the first day of the month, sunrise is at 07:21 and sunset at 18:05. On the last day of May, sunrise is at 07:42 and sunset at 17:45 SAST.
Sunshine
The average sunshine in May is 6.5h.UV index
May through September, with an average maximum UV index of 4, are months with the lowest UV index in Cape Town, South Africa. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: A daily high UV index of 4 in May leads to these guidelines:
Guard yourself - Avoiding sunburn is suggested. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Frequently asked questions
What are the temperatures in Cape Town in May?
What is the average humidity in May in Cape Town?
How much does it rain in Cape Town in May?
What is the sea temperature in May in Cape Town?
How many hours of daylight does Cape Town have in May?
When is the sunrise / sunset in May in Cape Town?
How many hours of sunshine does Cape Town have in May?
When is the lowest UV index in Cape Town?
What is the UV index reading in May in Cape Town?
Average temperature in May
Cape Town, South Africa
- Average high temperature in May: 19.7°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 May: 13.1°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).
Average pressure in May
Cape Town, South Africa
- Average pressure in May: 1018.1mbar
The month with the highest atmospheric pressure is July (1022mbar).
The month with the lowest atmospheric pressure is February (1013.4mbar).
Average wind speed in May
Cape Town, South Africa
- Average wind speed in May: 13.4km/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).
Average humidity in May
Cape Town, South Africa
- Average humidity in May: 73%
The months with the highest relative humidity are June, August and September (74%).
The months with the lowest relative humidity are February, April and December (68%).
Average rainfall in May
Cape Town, South Africa
- Average rainfall in May: 46mm
The wettest month (with the highest rainfall) is June (98mm).
The driest month (with the least rainfall) is February (7mm).
Average rainfall days in May
Cape Town, South Africa
- Average rainfall days in May: 11.1 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).
Average sea temperature in May
Cape Town, South Africa
- Average sea temperature in May: 16.4°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).
Average daylight in May /
Average sunshine in May
Cape Town, South Africa
- Average daylight in May: 10h and 2min
The month with the longest days is December (Average daylight: 14h and 24min).
The month with the shortest days is June (Average daylight: 9h and 54min).
- Average sunshine in May: 6h and 3min
The month with the most sunshine is December (Average sunshine: 11h and 6min).
The month with the least sunshine is June (Average sunshine: 6h and 0min).
Average sunshine days in May
Cape Town, South Africa
- Average sunshine days in May: 18.4 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).
Average UV index in May
Cape Town, South Africa
- Average UV index in May: 4
The months with the highest UV index are January, February and December (UV index 6).
The months with the lowest UV index are May, June, July, August and September (UV index 4).
Average cloud cover in May
Cape Town, South Africa
- Average cloud cover in May: 31
The month with the most cloud cover is June (Cloud cover 34).
The month with the least cloud cover is February (Cloud cover 15).
Average visibility in May
Cape Town, South Africa
- Average visibility in May: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Cape Town, South Africa
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