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
Weather in December
Temperature
December observes an average high-temperature of a still moderately hot 27.9°C (82.2°F), marking an insignificant difference from November's 27.3°C (81.1°F). December witnesses an average nighttime temperature of 16.4°C (61.5°F) in Vanderbijlpark.Heat index
The heat index for December is calculated to be 29°C (84.2°F). Exhaustion might be the outcome of enduring exposure and continuous activity, with a risk of heat cramps.Take into consideration that the heat index values are calculated for shade and light wind conditions. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is found by incorporating humidity levels into the air temperature measurement. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.
Humidity
In December, the average relative humidity is 57%.Rainfall
December is the month with the most rainfall in Vanderbijlpark. Rain falls for 17.8 days and accumulates 83mm (3.27") of precipitation.Snowfall
January through July, September through December are months without snowfall.Daylight
December has the longest days of the year in Vanderbijlpark, with an average of 13h and 48min of daylight.On the first day of December, sunrise is at 05:07 and sunset at 18:48. On the last day of the month, sunrise is at 05:18 and sunset at 19:05 SAST.
Sunshine
In December, the average sunshine in Vanderbijlpark is 11.3h.UV index
The months with the highest UV index in Vanderbijlpark are January, October through December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The UV index of 6 in December translates into these instructions:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Frequently asked questions
What are December temperatures in Vanderbijlpark?
What is the average humidity in December in Vanderbijlpark?
What is the wettest month in Vanderbijlpark?
How much does it rain in Vanderbijlpark in December?
When it does not snow in Vanderbijlpark?
When are the longest days in Vanderbijlpark?
How many hours of daylight does Vanderbijlpark have in December?
When are sunrise and sunset in December in Vanderbijlpark?
How long on average sun shines in December in Vanderbijlpark?
When is the highest UV index in Vanderbijlpark?
How high is the UV index in December in Vanderbijlpark?
Average temperature in December
Vanderbijlpark, 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
Vanderbijlpark, 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
Vanderbijlpark, 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
Vanderbijlpark, 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
Vanderbijlpark, 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
Vanderbijlpark, 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
Vanderbijlpark, 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
Vanderbijlpark, 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
Vanderbijlpark, 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
Vanderbijlpark, 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
Vanderbijlpark, 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
Vanderbijlpark, 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).
Vanderbijlpark, South Africa
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