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 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
As November transitions into December, the average high-temperature rests at a still moderately hot 25.5°C (77.9°F), maintaining a close resemblance to the previous month. Nightly readings in December display a noticeable downturn from daily highs, with the average low-temperature registering a fresh 12.7°C (54.9°F).Humidity
In Petrus Steyn, the average relative humidity in December is 61%.Rainfall
In December, in Petrus Steyn, South Africa, the rain falls for 18.1 days. Throughout December, 73mm (2.87") of precipitation is accumulated. Throughout the year, there are 117.6 rainfall days, and 432mm (17.01") of precipitation is accumulated.Snowfall
January through July, September through December are months without snowfall.Daylight
December has the longest days of the year, with an average of 13h and 54min of daylight.On the first day of the month, sunrise is at 05:03 and sunset at 18:49. On the last day of December, in Petrus Steyn, sunrise is at 05:14 and sunset at 19:06 SAST.
Sunshine
In Petrus Steyn, the average sunshine in December is 11.5h.UV index
The months with the highest UV index in Petrus Steyn are January through March, October through December, with an average maximum UV index of 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: In December, the average maximum UV index of 5 translates into the following recommendations:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Petrus Steyn in December?
What is the average humidity in December in Petrus Steyn?
How many days does it rain in December in Petrus Steyn?
When it does not snow in Petrus Steyn?
When are the longest days in Petrus Steyn?
What is the average length of the day in December in Petrus Steyn?
When are sunrise and sunset in December in Petrus Steyn?
How long on average sun shines in December in Petrus Steyn?
What is the month with the highest UV index in Petrus Steyn?
What is the UV index reading in December in Petrus Steyn?
Average temperature in December
Petrus Steyn, South Africa
- Average high temperature in December: 25.5°C
The warmest month (with the highest average high temperature) is January (25.9°C).
The month with the lowest average high temperature is June (15°C).
- Average low temperature in December: 12.7°C
The month with the highest average low temperature is January (13.5°C).
The coldest month (with the lowest average low temperature) is July (2.5°C).
Average pressure in December
Petrus Steyn, South Africa
- Average pressure in December: 1014.2mbar
The month with the highest atmospheric pressure is July (1025.3mbar).
The month with the lowest atmospheric pressure is December (1014.2mbar).
Average wind speed in December
Petrus Steyn, South Africa
- Average wind speed in December: 10.5km/h
The windiest month (with the highest average wind speed) is September (11.7km/h).
The calmest month (with the lowest average wind speed) is May (8.7km/h).
Average humidity in December
Petrus Steyn, South Africa
- Average humidity in December: 61%
The month with the highest relative humidity is February (66%).
The month with the lowest relative humidity is September (38%).
Average rainfall in December
Petrus Steyn, South Africa
- Average rainfall in December: 73mm
The wettest month (with the highest rainfall) is January (74mm).
The driest month (with the least rainfall) is July (2mm).
Average rainfall days in December
Petrus Steyn, South Africa
- Average rainfall days in December: 18.1 days
The month with the highest number of rainy days is January (19 days).
The month with the least rainy days is July (1.7 days).
Average snowfall in December
Petrus Steyn, South Africa
- Average snowfall in December: 0mm
The month with the highest snowfall is August (10mm).
The months with the least snowfall are January, February, March, April, May, June, July, September, October, November and December (0mm).
Average snowfall days in December
Petrus Steyn, South Africa
- Average snowfall days in December: 0 days
The month with the highest number of snowfall days is June (0.3 days).
The months with the least snowfall days are January, February, March, April, May, July, September, October, November and December (0 days).
Average daylight in December /
Average sunshine in December
Petrus Steyn, 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 3min
The month with the most sunshine is October (Average sunshine: 11h and 48min).
The months with the least sunshine are April and August (Average sunshine: 7h and 24min).
Average sunshine days in December
Petrus Steyn, South Africa
- Average sunshine days in December: 9 days
The month with the most sunshine days is July (28.8 days).
The month with the least sunshine days is January (7.8 days).
Average UV index in December
Petrus Steyn, South Africa
- Average UV index in December: 5
The months with the highest UV index are January, February, March, October, November and December (UV index 5).
The months with the lowest UV index are June and July (UV index 3).
Average cloud cover in December
Petrus Steyn, South Africa
- Average cloud cover in December: 24
The month with the most cloud cover is January (Cloud cover 26).
The months with the least cloud cover are July and August (Cloud cover 7).
Average visibility in December
Petrus Steyn, South Africa
- Average visibility in December: 9km
The months with the highest visibility are March, April, May, June, July, August, September, October and November (10km).
The months with the lowest visibility are January, February and December (9km).
