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
Gertrudsburg's December weather reaches an average high of 28.5°C (83.3°F) and an average low of 17.7°C (63.9°F), making it the warmest month.Heat index
In December, the heat index is calculated to be a hot 32°C (89.6°F). A sense of exhaustion might occur with extended exposure and activity, potentially causing heat cramps.Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is an aggregate value of air's warmth and moisture to show the human-felt temperature. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. 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 December, the average relative humidity in Gertrudsburg, South Africa, is 70%.Rainfall
December is the month with the most rainfall in Gertrudsburg. Rain falls for 20.1 days and accumulates 106mm (4.17") of precipitation.Daylight
December has the longest days of the year, with an average of 13h and 30min of daylight.On the first day of December in Gertrudsburg, sunrise is at 05:06 and sunset at 18:33. On the last day of the month, sunrise is at 05:18 and sunset at 18:49 SAST.
Sunshine
In December, the average sunshine in Gertrudsburg is 9.6h.UV index
The months with the highest UV index in Gertrudsburg are January, March, September through December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the average person.Note: The daily high UV index of 6 in December translates into this advice:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Frequently asked questions
What time of the year is the hottest in Gertrudsburg?
How hot does it get in Gertrudsburg in December?
What is the average humidity in December in Gertrudsburg?
What is the wettest month in Gertrudsburg?
How many days does it rain in December in Gertrudsburg?
When are the longest days in Gertrudsburg?
What is the average length of the day in December in Gertrudsburg?
When are sunrise and sunset in December in Gertrudsburg?
How long on average sun shines in December in Gertrudsburg?
What is the month with the highest UV index in Gertrudsburg?
How high is the UV index in December in Gertrudsburg?
Average temperature in December
Gertrudsburg, South Africa
- Average high temperature in December: 28.5°C
The warmest month (with the highest average high temperature) is December (28.5°C).
The month with the lowest average high temperature is July (21°C).
- Average low temperature in December: 17.7°C
The month with the highest average low temperature is December (17.7°C).
The coldest month (with the lowest average low temperature) is July (8.6°C).
Average pressure in December
Gertrudsburg, South Africa
- Average pressure in December: 1012.7mbar
The month with the highest atmospheric pressure is July (1023.6mbar).
The month with the lowest atmospheric pressure is January (1012.2mbar).
Average wind speed in December
Gertrudsburg, South Africa
- Average wind speed in December: 9.2km/h
The windiest month (with the highest average wind speed) is October (10.6km/h).
The calmest month (with the lowest average wind speed) is May (6.7km/h).
Average humidity in December
Gertrudsburg, South Africa
- Average humidity in December: 70%
The month with the highest relative humidity is February (76%).
The month with the lowest relative humidity is September (51%).
Average rainfall in December
Gertrudsburg, South Africa
- Average rainfall in December: 106mm
The wettest month (with the highest rainfall) is December (106mm).
The driest month (with the least rainfall) is August (2mm).
Average rainfall days in December
Gertrudsburg, South Africa
- Average rainfall days in December: 20.1 days
The month with the highest number of rainy days is December (20.1 days).
The month with the least rainy days is June (2.8 days).
Average daylight in December /
Average sunshine in December
Gertrudsburg, South Africa
- Average daylight in December: 13h and 3min
The month with the longest days is December (Average daylight: 13h and 30min).
The month with the shortest days is June (Average daylight: 10h and 42min).
- Average sunshine in December: 9h and 4min
The month with the most sunshine is October (Average sunshine: 10h and 36min).
The month with the least sunshine is April (Average sunshine: 6h and 24min).
Average sunshine days in December
Gertrudsburg, South Africa
- Average sunshine days in December: 7.4 days
The month with the most sunshine days is August (25.9 days).
The month with the least sunshine days is December (7.4 days).
Average UV index in December
Gertrudsburg, South Africa
- Average UV index in December: 6
The months with the highest UV index are January, March, September, October, November and December (UV index 6).
The month with the lowest UV index is June (UV index 4).
Average cloud cover in December
Gertrudsburg, South Africa
- Average cloud cover in December: 43
The month with the most cloud cover is January (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in December
Gertrudsburg, South Africa
- Average visibility in December: 9km
The months with the highest visibility are June, August, September and October (10km).
The month with the lowest visibility is January (8km).
Gertrudsburg, South Africa
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