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 transition from November to December in Welkom brings an average high-temperature of a tropical 30.1°C (86.2°F), barely different from November's 28.8°C (83.8°F). Throughout December nights, a significant departure from daytime temperatures, with an average low of 17.5°C (63.5°F), is recognized.Heat index
For most parts of December, the heat index is estimated at a tropical 30°C (86°F). Long-standing exposure coupled with ongoing activity could result in exhaustion, possibly causing heat cramps.Evaluating the heat index requires understanding its values in the shade and with gentle winds. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', reflects the blend of air temperature and relative humidity to give a temperature impression. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
Humidity
The average relative humidity in December in Welkom is 44%.Rainfall
In Welkom, during December, the rain falls for 11.7 days and regularly aggregates up to 29mm (1.14") of precipitation. In Welkom, during the entire year, the rain falls for 73.3 days and collects up to 192mm (7.56") of precipitation.Daylight
December has the longest days of the year, with an average of 13h and 54min of daylight.On the first day of December, sunrise is at 05:08 and sunset at 18:55. On the last day of the month, sunrise is at 05:19 and sunset at 19:12 SAST.
Sunshine
In December, the average sunshine in Welkom, South Africa, is 11.7h.UV index
The months with the highest UV index in Welkom are January, February, October through December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In December, the UV index of 6 transforms into the following advice:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot in Welkom during December?
What is the average humidity in December in Welkom?
How many days does it rain in December in Welkom?
When are the longest days in Welkom?
How many hours of daylight does Welkom have in December?
When is the sunrise / sunset in December in Welkom?
How long on average sun shines in December in Welkom?
What is the month with the highest UV index in Welkom?
How high is the UV index in December in Welkom?
Average temperature in December
Welkom, South Africa
- Average high temperature in December: 30.1°C
The warmest month (with the highest average high temperature) is January (30.2°C).
The month with the lowest average high temperature is June (17.3°C).
- Average low temperature in December: 17.5°C
The month with the highest average low temperature is January (18.6°C).
The coldest month (with the lowest average low temperature) is July (5.5°C).
Average pressure in December
Welkom, South Africa
- Average pressure in December: 1012.5mbar
The month with the highest atmospheric pressure is July (1025mbar).
The month with the lowest atmospheric pressure is January (1012.4mbar).
Average wind speed in December
Welkom, South Africa
- Average wind speed in December: 13.2km/h
The windiest month (with the highest average wind speed) is November (14.4km/h).
The calmest month (with the lowest average wind speed) is May (9km/h).
Average humidity in December
Welkom, South Africa
- Average humidity in December: 44%
The month with the highest relative humidity is February (53%).
The month with the lowest relative humidity is September (30%).
Average rainfall in December
Welkom, South Africa
- Average rainfall in December: 29mm
The wettest month (with the highest rainfall) is January (33mm).
The driest months (with the least rainfall) are July and August (2mm).
Average rainfall days in December
Welkom, South Africa
- Average rainfall days in December: 11.7 days
The month with the highest number of rainy days is January (11.9 days).
The month with the least rainy days is July (1.4 days).
Average daylight in December /
Average sunshine in December
Welkom, South Africa
- Average daylight in December: 13h and 5min
The month with the longest days is December (Average daylight: 13h and 54min).
The month with the shortest days is June (Average daylight: 10h and 24min).
- Average sunshine in December: 11h and 4min
The month with the most sunshine is November (Average sunshine: 11h and 54min).
The month with the least sunshine is August (Average sunshine: 7h and 24min).
Average sunshine days in December
Welkom, South Africa
- Average sunshine days in December: 16.6 days
The month with the most sunshine days is July (29.3 days).
The month with the least sunshine days is February (15.3 days).
Average UV index in December
Welkom, 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
Welkom, South Africa
- Average cloud cover in December: 18
The months with the most cloud cover are January and February (Cloud cover 19).
The months with the least cloud cover are July and August (Cloud cover 6).
Average visibility in December
Welkom, 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).
Welkom, South Africa
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