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 snowfall in May
- Average snowfall days 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
The commencement of May includes a gentle temperature shift, with the average high-temperature dropping a bit from a pleasant 20.8°C (69.4°F) in April to a refreshing 17.8°C (64°F). Throughout the May nights, Williston encounters a low-temperature of 8.3°C (46.9°F).Humidity
In Williston, the average relative humidity in May is 48%.Rainfall
In Williston, during May, the rain falls for 3.3 days and regularly aggregates up to 8mm (0.31") of precipitation. Throughout the year, in Williston, South Africa, there are 48.1 rainfall days, and 112mm (4.41") of precipitation is accumulated.Snowfall
In Williston, snow does not fall in January through June, October through December.Daylight
The average length of the day in May is 10h and 32min.On the first day of May in Williston, sunrise is at 07:07 and sunset at 17:59. On the last day of the month, sunrise is at 07:26 and sunset at 17:41 SAST.
Sunshine
The average sunshine in May in Williston is 7.3h.UV index
May through July, with an average maximum UV index of 3, are months with the lowest UV index in Williston. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for average individuals.Note: A maximum daily UV index of 3 during May morphs into the following directions:
Take precautions - Protection against skin and eye damage is obliged. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Frequently asked questions
What are the temperatures in Williston in May?
What is the average humidity in May in Williston?
How much does it rain in Williston in May?
When it does not snow in Williston?
What is the average length of the day in May in Williston?
When is the sunrise / sunset in May in Williston?
How many hours of sunshine does Williston have in May?
What is the month with the lowest UV index in Williston?
What is the UV index reading in May in Williston?
Average temperature in May
Williston, South Africa
- Average high temperature in May: 17.8°C
The warmest month (with the highest average high temperature) is January (29.1°C).
The month with the lowest average high temperature is June (13.2°C).
- Average low temperature in May: 8.3°C
The months with the highest average low temperature are January and February (16.8°C).
The coldest month (with the lowest average low temperature) is July (3.9°C).
Average pressure in May
Williston, South Africa
- Average pressure in May: 1019.2mbar
The month with the highest atmospheric pressure is July (1023.4mbar).
The month with the lowest atmospheric pressure is January (1011.7mbar).
Average wind speed in May
Williston, South Africa
- Average wind speed in May: 16.5km/h
The windiest month (with the highest average wind speed) is June (19.2km/h).
The calmest month (with the lowest average wind speed) is March (15.8km/h).
Average humidity in May
Williston, South Africa
- Average humidity in May: 48%
The month with the highest relative humidity is June (57%).
The month with the lowest relative humidity is November (36%).
Average rainfall in May
Williston, South Africa
- Average rainfall in May: 8mm
The wettest month (with the highest rainfall) is January (21mm).
The driest month (with the least rainfall) is November (3mm).
Average rainfall days in May
Williston, South Africa
- Average rainfall days in May: 3.3 days
The month with the highest number of rainy days is January (5.9 days).
The month with the least rainy days is November (2.6 days).
Average snowfall in May
Williston, South Africa
- Average snowfall in May: 0mm
The month with the highest snowfall is July (6mm).
The months with the least snowfall are January, February, March, April, May, June, October, November and December (0mm).
Average snowfall days in May
Williston, South Africa
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is July (0.8 days).
The months with the least snowfall days are January, February, March, October, November and December (0 days).
Average daylight in May /
Average sunshine in May
Williston, South Africa
- Average daylight in May: 10h and 3min
The month with the longest days is December (Average daylight: 14h and 6min).
The month with the shortest days is June (Average daylight: 10h and 6min).
- Average sunshine in May: 7h and 2min
The months with the most sunshine are January and November (Average sunshine: 12h and 0min).
The month with the least sunshine is June (Average sunshine: 7h and 12min).
Average sunshine days in May
Williston, South Africa
- Average sunshine days in May: 27 days
The month with the most sunshine days is May (27 days).
The month with the least sunshine days is February (21.8 days).
Average UV index in May
Williston, South Africa
- Average UV index in May: 3
The months with the highest UV index are January, February, November and December (UV index 6).
The months with the lowest UV index are May, June and July (UV index 3).
Average cloud cover in May
Williston, South Africa
- Average cloud cover in May: 15
The month with the most cloud cover is June (Cloud cover 20).
The months with the least cloud cover are January, February and March (Cloud cover 10).
Average visibility in May
Williston, 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).
Williston, South Africa
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