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
Hermanus, South Africa, marks the onset of May with an average high-temperature of an enjoyable 18.9°C (66°F), subtly divergent from April's 20.8°C (69.4°F). Hermanus, in May, registers an average low temperature of 14.1°C (57.4°F), showing a minute reduction from daily highs.Humidity
January through March, May, September and October, with an average relative humidity of 76%, are the most humid months in Hermanus, South Africa.Rainfall
In Hermanus, during May, the rain falls for 8.7 days and regularly aggregates up to 18mm (0.71") of precipitation. In Hermanus, during the entire year, the rain falls for 113.9 days and collects up to 270mm (10.63") of precipitation.Sea temperature
In Hermanus, in May, the average water temperature is 17°C (62.6°F).Note: Swimming in 17°C (62.6°F) does not offer a pleasant experience for most individuals. The act of controlling one's breathing becomes progressively difficult as the water temperature goes under 21°C (69.8°F).
Daylight
The average length of the day in May in Hermanus is 10h and 20min.On the first day of May in Hermanus, sunrise is at 07:18 and sunset at 18:01. On the last day of the month, sunrise is at 07:40 and sunset at 17:41 SAST.
Sunshine
In Hermanus, 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. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: In May, the UV index of 4 transforms into the following advice:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Frequently asked questions
What is the temperature in May in Hermanus?
What are the most humid months in Hermanus?
What is the average humidity in May in Hermanus?
How much does it rain in Hermanus in May?
How cold is the water in May in Hermanus?
How many hours of daylight does Hermanus have in May?
When is the sunrise / sunset in May in Hermanus?
How many hours of sunshine does Hermanus have in May?
What is the month with the lowest UV index in Hermanus?
How high is the UV index in May in Hermanus?
Average temperature in May
Hermanus, South Africa
- Average high temperature in May: 18.9°C
The warmest month (with the highest average high temperature) is February (23.3°C).
The month with the lowest average high temperature is August (16.2°C).
- Average low temperature in May: 14.1°C
The month with the highest average low temperature is February (18.3°C).
The coldest month (with the lowest average low temperature) is August (11.5°C).
Average pressure in May
Hermanus, South Africa
- Average pressure in May: 1017.9mbar
The month with the highest atmospheric pressure is July (1021.8mbar).
The month with the lowest atmospheric pressure is February (1013.8mbar).
Average wind speed in May
Hermanus, South Africa
- Average wind speed in May: 17.7km/h
The windiest month (with the highest average wind speed) is November (21.5km/h).
The calmest month (with the lowest average wind speed) is May (17.7km/h).
Average humidity in May
Hermanus, South Africa
- Average humidity in May: 76%
The months with the highest relative humidity are January, February, March, May, September and October (76%).
The months with the lowest relative humidity are April, June and July (74%).
Average rainfall in May
Hermanus, South Africa
- Average rainfall in May: 18mm
The wettest month (with the highest rainfall) is June (47mm).
The driest months (with the least rainfall) are February and December (13mm).
Average rainfall days in May
Hermanus, South Africa
- Average rainfall days in May: 8.7 days
The month with the highest number of rainy days is March (12.3 days).
The month with the least rainy days is October (7.1 days).
Average sea temperature in May
Hermanus, South Africa
- Average sea temperature in May: 17°C
The best month for swimming (with the highest average sea temperature) is January (20°C).
The coldest month (with the lowest average sea temperature) is August (15.4°C).
Average daylight in May /
Average sunshine in May
Hermanus, 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: 10h and 24min).
The month with the least sunshine is June (Average sunshine: 6h and 12min).
Average sunshine days in May
Hermanus, South Africa
- Average sunshine days in May: 20.9 days
The month with the most sunshine days is October (22 days).
The month with the least sunshine days is February (13.9 days).
Average UV index in May
Hermanus, South Africa
- Average UV index in May: 4
The months with the highest UV index are January and February (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
Hermanus, South Africa
- Average cloud cover in May: 30
The months with the most cloud cover are March and October (Cloud cover 33).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in May
Hermanus, 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).
Hermanus, South Africa
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