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 snowfall 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
December
Weather in December
Temperature
The average high-temperature is a still warm 27.9°C (82.2°F) in December, hardly different from the 27.3°C (81.1°F) recorded in November. Throughout December, Sasolburg anticipates an average low-temperature of 16.4°C (61.5°F).Heat index
The heat index value during December is calculated to be 29°C (84.2°F). If one persists in activity during exposure, it could induce weariness and subsequently, heat cramps.For clarity, heat index numbers account for light winds and areas under shade. 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 'felt air temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
Humidity
In December, the average relative humidity in Sasolburg is 57%.Rainfall
The month with the most rainfall in Sasolburg, South Africa, is December, when the rain falls for 17.8 days and typically aggregates up to 83mm (3.27") of precipitation.Snowfall
January through July, September through December are months without snowfall.Daylight
The month with the longest days in Sasolburg is December, with an average of 13h and 48min of daylight.On the first day of December in Sasolburg, South Africa, sunrise is at 05:06 and sunset at 18:48. On the last day of the month, sunrise is at 05:17 and sunset at 19:05 SAST.
Sunshine
The average sunshine in December is 11.3h.UV index
January, October through December, with an average maximum UV index of 6, are months with the highest UV index in Sasolburg. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum daily UV index of 6 during December morphs into the following directions:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are December temperatures in Sasolburg?
What is the average humidity in December in Sasolburg?
What is the wettest month in Sasolburg?
How much does it rain in Sasolburg in December?
When it does not snow in Sasolburg?
When are the longest days in Sasolburg?
How many hours of daylight does Sasolburg have in December?
What time are sunrise and sunset in December in Sasolburg?
How long on average sun shines in December in Sasolburg?
What are the months with the highest UV index in Sasolburg?
What is the UV index reading in December in Sasolburg?
Average temperature in December
Sasolburg, South Africa
- Average high temperature in December: 27.9°C
The warmest month (with the highest average high temperature) is January (28°C).
The months with the lowest average high temperature are June and July (17.6°C).
- Average low temperature in December: 16.4°C
The month with the highest average low temperature is December (16.4°C).
The coldest month (with the lowest average low temperature) is July (5.4°C).
Average pressure in December
Sasolburg, South Africa
- Average pressure in December: 1013.4mbar
The month with the highest atmospheric pressure is July (1024.8mbar).
The month with the lowest atmospheric pressure is January (1013.3mbar).
Average wind speed in December
Sasolburg, South Africa
- Average wind speed in December: 11.1km/h
The windiest months (with the highest average wind speed) are September, October and November (12.7km/h).
The calmest month (with the lowest average wind speed) is May (8.4km/h).
Average humidity in December
Sasolburg, South Africa
- Average humidity in December: 57%
The month with the highest relative humidity is February (63%).
The month with the lowest relative humidity is September (32%).
Average rainfall in December
Sasolburg, South Africa
- Average rainfall in December: 83mm
The wettest month (with the highest rainfall) is December (83mm).
The driest months (with the least rainfall) are July and August (2mm).
Average rainfall days in December
Sasolburg, South Africa
- Average rainfall days in December: 17.8 days
The month with the highest number of rainy days is January (18.3 days).
The months with the least rainy days are June, July and August (1.8 days).
Average snowfall days in December
Sasolburg, South Africa
- Average snowfall days in December: 0 days
The month with the highest number of snowfall days is August (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, September, October, November and December (0 days).
Average daylight in December /
Average sunshine in December
Sasolburg, South Africa
- Average daylight in December: 13h and 5min
The month with the longest days is December (Average daylight: 13h and 48min).
The month with the shortest days is June (Average daylight: 10h and 30min).
- Average sunshine in December: 11h and 2min
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 30min).
Average sunshine days in December
Sasolburg, South Africa
- Average sunshine days in December: 9.5 days
The months with the most sunshine days are July and August (28.9 days).
The month with the least sunshine days is January (9.4 days).
Average UV index in December
Sasolburg, South Africa
- Average UV index in December: 6
The months with the highest UV index are January, 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
Sasolburg, South Africa
- Average cloud cover in December: 23
The month with the most cloud cover is January (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in December
Sasolburg, 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).
