Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
January temperatures tend to peak at an average high of 29.1°C (84.4°F) and dip to a low of 16.8°C (62.2°F).Heat index
January's mean heat index is evaluated at 29°C (84.2°F). Ongoing activity coupled with exposure often results in weariness and could induce heat cramps.It is emphasized that the heat index's values are meant for shaded zones with mild winds. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'feels like' or 'apparent temperature', joins air temperature with relative humidity to produce a temperature perception for humans. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
Humidity
The average relative humidity in January is 40%.Rainfall
January is the month with the most rainfall in Williston. Rain falls for 5.9 days and accumulates 21mm (0.83") of precipitation.Snowfall
January through June, October through December are months without snowfall.Daylight
In January, the average length of the day in Williston is 13h and 55min.On the first day of January in Williston, sunrise is at 05:35 and sunset at 19:44. On the last day of the month, sunrise is at 06:01 and sunset at 19:38 SAST.
Sunshine
The months with the most sunshine in Williston are January and November, with an average of 12h of sunshine.UV index
January, February, November and December, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum UV index of 6 in January translates into the following recommendations:
Inhibit overexposure. Warding off sun damage is of utmost importance. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Frequently asked questions
What time of the year is the hottest in Williston?
How hot is January in Williston?
What is the average humidity in January in Williston?
What is the wettest month in Williston?
How much does it rain in Williston in January?
When it does not snow in Williston?
How many hours of daylight does Williston have in January?
When is the sunrise / sunset in January in Williston?
What are the months with the most sunshine in Williston?
How many hours of sunshine does Williston have in January?
When is the highest UV index in Williston?
How high is the UV index in January in Williston?
Average temperature in January
Williston, South Africa
- Average high temperature in January: 29.1°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 January: 16.8°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 January
Williston, South Africa
- Average pressure in January: 1011.7mbar
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 January
Williston, South Africa
- Average wind speed in January: 17.5km/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 January
Williston, South Africa
- Average humidity in January: 40%
The month with the highest relative humidity is June (57%).
The month with the lowest relative humidity is November (36%).
Average rainfall in January
Williston, South Africa
- Average rainfall in January: 21mm
The wettest month (with the highest rainfall) is January (21mm).
The driest month (with the least rainfall) is November (3mm).
Average rainfall days in January
Williston, South Africa
- Average rainfall days in January: 5.9 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 January
Williston, South Africa
- Average snowfall in January: 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 January
Williston, South Africa
- Average snowfall days in January: 0 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 January /
Average sunshine in January
Williston, South Africa
- Average daylight in January: 13h and 5min
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 January: 12h and 0min
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 January
Williston, South Africa
- Average sunshine days in January: 23.8 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 January
Williston, South Africa
- Average UV index in January: 6
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 January
Williston, South Africa
- Average cloud cover in January: 10
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 January
Williston, South Africa
- Average visibility in January: 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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