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
December
Weather in December
Temperature
With the onset of December, a modest change to a warm 23.5°C (74.3°F) from November's 22°C (71.6°F) is noted in high-temperature. Nighttime temperature in Swartkops lowers to an average of 17.8°C (64°F) in December.Humidity
January, February and December, with an average relative humidity of 76%, are the most humid months in Swartkops.Rainfall
In Swartkops, in December, during 15.8 rainfall days, 25mm (0.98") of precipitation is typically accumulated. Throughout the year, there are 138.6 rainfall days, and 314mm (12.36") of precipitation is accumulated.Daylight
December has the longest days of the year, with an average of 14h and 24min of daylight.On the first day of the month, sunrise is at 04:59 and sunset at 19:14. On the last day of December, in Swartkops, South Africa, sunrise is at 05:09 and sunset at 19:31 SAST.
Sunshine
The average sunshine in December is 9.4h.UV index
The months with the highest UV index are January, February and December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for average individuals.Note: A maximum high UV index of 6 in December translates into the following recommendations:
Sidestep overexposure. Individuals with fair complexions risk burning in fewer than 20 minutes. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Swartkops in December?
What are the most humid months in Swartkops?
What is the average humidity in December in Swartkops?
How much does it rain in Swartkops in December?
When are the longest days in Swartkops?
How many hours of daylight does Swartkops have in December?
When is the sunrise / sunset in December in Swartkops?
How long on average sun shines in December in Swartkops?
What are the months with the highest UV index in Swartkops?
What is the UV index intensity in December in Swartkops?
Average temperature in December
Swartkops, South Africa
- Average high temperature in December: 23.5°C
The warmest month (with the highest average high temperature) is February (25.3°C).
The month with the lowest average high temperature is July (19.7°C).
- Average low temperature in December: 17.8°C
The month with the highest average low temperature is February (19.5°C).
The coldest months (with the lowest average low temperature) are July and August (13.3°C).
Average pressure in December
Swartkops, South Africa
- Average pressure in December: 1014.2mbar
The month with the highest atmospheric pressure is July (1021.9mbar).
The month with the lowest atmospheric pressure is January (1013.5mbar).
Average wind speed in December
Swartkops, South Africa
- Average wind speed in December: 18.8km/h
The windiest month (with the highest average wind speed) is October (20.3km/h).
The calmest month (with the lowest average wind speed) is May (16.4km/h).
Average humidity in December
Swartkops, South Africa
- Average humidity in December: 76%
The months with the highest relative humidity are January, February and December (76%).
The month with the lowest relative humidity is June (62%).
Average rainfall in December
Swartkops, South Africa
- Average rainfall in December: 25mm
The wettest month (with the highest rainfall) is March (33mm).
The driest month (with the least rainfall) is May (21mm).
Average rainfall days in December
Swartkops, South Africa
- Average rainfall days in December: 15.8 days
The month with the highest number of rainy days is December (15.8 days).
The month with the least rainy days is June (7.8 days).
Average daylight in December /
Average sunshine in December
Swartkops, South Africa
- Average daylight in December: 14h and 2min
The month with the longest days is December (Average daylight: 14h and 24min).
The month with the shortest days is June (Average daylight: 9h and 54min).
- Average sunshine in December: 9h and 2min
The month with the most sunshine is November (Average sunshine: 9h and 48min).
The month with the least sunshine is August (Average sunshine: 6h and 30min).
Average sunshine days in December
Swartkops, South Africa
- Average sunshine days in December: 11 days
The month with the most sunshine days is May (21.3 days).
The month with the least sunshine days is February (10 days).
Average UV index in December
Swartkops, South Africa
- Average UV index in December: 6
The months with the highest UV index are January, February and December (UV index 6).
The months with the lowest UV index are March, April, May, June, July, August, September, October and November (UV index 5).
Average cloud cover in December
Swartkops, South Africa
- Average cloud cover in December: 39
The month with the most cloud cover is December (Cloud cover 39).
The month with the least cloud cover is June (Cloud cover 22).
Average visibility in December
Swartkops, 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).
