Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
December's beginning signals an average high-temperature of a still warm 29.1°C (84.4°F), barely different from November's 28.7°C (83.7°F). Nighttime temperature in Rustenburg experiences an average drop to a refreshing 18°C (64.4°F) in December.Heat index
During December, the heat index is computed to be a tropical 31°C (87.8°F). If exposure and ongoing activity persist, they might induce a state of tiredness and heat cramps.Bear in mind that the heat index values are determined for shaded areas and light breezes. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
Humidity
In December, the average relative humidity is 57%.Rainfall
The month with the most rainfall is December, when the rain falls for 19.6 days and typically aggregates up to 95mm (3.74") of precipitation.Daylight
December has the longest days of the year, with an average of 13h and 42min of daylight.On the first day of December, sunrise is at 05:11 and sunset at 18:48. On the last day of the month, sunrise is at 05:22 and sunset at 19:05 SAST.
Sunshine
In Rustenburg, the average sunshine in December is 11.3h.UV index
The months with the highest UV index in Rustenburg are January through March, October through December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the average person.Note: The daily maximum UV index of 6 in December interprets into the following advice:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Frequently asked questions
How hot is December in Rustenburg?
What is the average humidity in December in Rustenburg?
What is the rainiest month in Rustenburg?
How much does it rain in Rustenburg in December?
When are the longest days in Rustenburg?
How many hours of daylight does Rustenburg have in December?
What time are sunrise and sunset in December in Rustenburg?
How many hours of sunshine does Rustenburg have in December?
When is the highest UV index in Rustenburg?
What is the UV index reading in December in Rustenburg?
Average temperature in December
Rustenburg, South Africa
- Average high temperature in December: 29.1°C
The warmest month (with the highest average high temperature) is January (29.3°C).
The month with the lowest average high temperature is July (18.9°C).
- Average low temperature in December: 18°C
The months with the highest average low temperature are January and December (18°C).
The coldest month (with the lowest average low temperature) is July (6.3°C).
Average pressure in December
Rustenburg, South Africa
- Average pressure in December: 1012.6mbar
The month with the highest atmospheric pressure is July (1024.4mbar).
The month with the lowest atmospheric pressure is January (1012.3mbar).
Average wind speed in December
Rustenburg, South Africa
- Average wind speed in December: 8.9km/h
The windiest month (with the highest average wind speed) is October (10.6km/h).
The calmest months (with the lowest average wind speed) are March and May (7km/h).
Average humidity in December
Rustenburg, South Africa
- Average humidity in December: 57%
The month with the highest relative humidity is February (61%).
The month with the lowest relative humidity is September (32%).
Average rainfall in December
Rustenburg, South Africa
- Average rainfall in December: 95mm
The wettest month (with the highest rainfall) is December (95mm).
The driest months (with the least rainfall) are July and August (1mm).
Average rainfall days in December
Rustenburg, South Africa
- Average rainfall days in December: 19.6 days
The month with the highest number of rainy days is January (20.7 days).
The month with the least rainy days is August (1 days).
Average daylight in December /
Average sunshine in December
Rustenburg, South Africa
- Average daylight in December: 13h and 4min
The month with the longest days is December (Average daylight: 13h and 42min).
The month with the shortest days is June (Average daylight: 10h and 36min).
- Average sunshine in December: 11h and 2min
The month with the most sunshine is October (Average sunshine: 11h and 54min).
The months with the least sunshine are June and August (Average sunshine: 7h and 30min).
Average sunshine days in December
Rustenburg, South Africa
- Average sunshine days in December: 6.9 days
The month with the most sunshine days is July (29.3 days).
The month with the least sunshine days is January (6.6 days).
Average UV index in December
Rustenburg, South Africa
- Average UV index in December: 6
The months with the highest UV index are January, February, March, October, November and December (UV index 6).
The months with the lowest UV index are May, June and July (UV index 4).
Average cloud cover in December
Rustenburg, South Africa
- Average cloud cover in December: 24
The months with the most cloud cover are January and December (Cloud cover 24).
The months with the least cloud cover are July and August (Cloud cover 5).
Average visibility in December
Rustenburg, South Africa
- Average visibility in December: 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).
Rustenburg, South Africa
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