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
The warmest period falls in January and December, when the average high-temperature reaches 27.3°C (81.1°F).Heat index
The average heat index in December is estimated at 28°C (82.4°F). Fatigue might occur with continuous exposure and activity, potentially causing heat cramps.Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', evaluates the perceived heat by adding the effect of moisture in the air. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance 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
In Roodepoort, the average relative humidity in December is 60%.Rainfall
In Roodepoort, South Africa, in December, during 19.2 rainfall days, 89mm (3.5") of precipitation is typically accumulated. In Roodepoort, during the entire year, the rain falls for 117.1 days and collects up to 441mm (17.36") of precipitation.Daylight
The month with the longest days in Roodepoort is December, with an average of 13h and 42min of daylight.On the first day of the month, sunrise is at 05:07 and sunset at 18:47. On the last day of December, sunrise is at 05:19 and sunset at 19:03 SAST.
Sunshine
The average sunshine in December is 11.2h.UV index
January, February, October through December, with an average maximum UV index of 6, are months with the highest UV index in Roodepoort. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index, 6 in December, converts into the following recommendations:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the hottest time of year in Roodepoort?
What is the temperature in December in Roodepoort?
What is the average humidity in December in Roodepoort?
How many days does it rain in December in Roodepoort?
When are the longest days in Roodepoort?
How many hours of daylight does Roodepoort have in December?
When are sunrise and sunset in December in Roodepoort?
How long on average sun shines in December in Roodepoort?
What is the month with the highest UV index in Roodepoort?
What is the UV index intensity in December in Roodepoort?
Average temperature in December
Roodepoort, South Africa
- Average high temperature in December: 27.3°C
The warmest months (with the highest average high temperature) are January and December (27.3°C).
The months with the lowest average high temperature are June and July (17.8°C).
- Average low temperature in December: 16.6°C
The month with the highest average low temperature is December (16.6°C).
The coldest month (with the lowest average low temperature) is July (6.1°C).
Average pressure in December
Roodepoort, South Africa
- Average pressure in December: 1013.2mbar
The month with the highest atmospheric pressure is July (1024.6mbar).
The month with the lowest atmospheric pressure is January (1012.9mbar).
Average wind speed in December
Roodepoort, South Africa
- Average wind speed in December: 10km/h
The windiest month (with the highest average wind speed) is November (11.7km/h).
The calmest month (with the lowest average wind speed) is May (7.8km/h).
Average humidity in December
Roodepoort, South Africa
- Average humidity in December: 60%
The months with the highest relative humidity are January and February (64%).
The month with the lowest relative humidity is September (34%).
Average rainfall in December
Roodepoort, South Africa
- Average rainfall in December: 89mm
The wettest month (with the highest rainfall) is January (90mm).
The driest month (with the least rainfall) is July (1mm).
Average rainfall days in December
Roodepoort, South Africa
- Average rainfall days in December: 19.2 days
The month with the highest number of rainy days is January (19.8 days).
The month with the least rainy days is July (1.2 days).
Average daylight in December /
Average sunshine in December
Roodepoort, 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 30min).
- Average sunshine in December: 11h and 1min
The month with the most sunshine is October (Average sunshine: 11h and 48min).
The month with the least sunshine is August (Average sunshine: 7h and 24min).
Average sunshine days in December
Roodepoort, South Africa
- Average sunshine days in December: 8.5 days
The month with the most sunshine days is July (29.3 days).
The month with the least sunshine days is December (8.5 days).
Average UV index in December
Roodepoort, South Africa
- Average UV index in December: 6
The months with the highest UV index are January, February, 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
Roodepoort, South Africa
- Average cloud cover in December: 25
The month with the most cloud cover is January (Cloud cover 26).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in December
Roodepoort, South Africa
- Average visibility in December: 10km
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (10km).
The month with the lowest visibility is January (9km).
Roodepoort, South Africa
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