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 shift into December finds Stellenbosch at an average high-temperature of a moderately hot 25.4°C (77.7°F), closely comparable to November's conditions. During the month of December, the temperature in Stellenbosch generally drops to a low average of 14.4°C (57.9°F).Humidity
In Stellenbosch, the average relative humidity in December is 67%.Rainfall
In Stellenbosch, during December, the rain falls for 7.2 days and regularly aggregates up to 18mm (0.71") of precipitation. Throughout the year, in Stellenbosch, there are 109.6 rainfall days, and 458mm (18.03") of precipitation is accumulated.Daylight
With an average of 14h and 24min of daylight, December has the longest days of the year in Stellenbosch.On the first day of December, sunrise is at 05:26 and sunset at 19:41. On the last day of the month, sunrise is at 05:36 and sunset at 19:58 SAST.
Sunshine
The month with the most sunshine is December, with an average of 11.2h of sunshine.UV index
The months with the highest UV index in Stellenbosch 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: An average maximum UV index of 6 in December leads to these recommendations:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Frequently asked questions
What is the temperature in December in Stellenbosch?
What is the average humidity in December in Stellenbosch?
How much does it rain in Stellenbosch in December?
When are the longest days in Stellenbosch?
What is the average length of the day in December in Stellenbosch?
When are sunrise and sunset in December in Stellenbosch?
What month has the most sunshine in Stellenbosch?
How long on average sun shines in December in Stellenbosch?
What are the months with the highest UV index in Stellenbosch?
How high is the UV index in December in Stellenbosch?
Average temperature in December
Stellenbosch, South Africa
- Average high temperature in December: 25.4°C
The warmest month (with the highest average high temperature) is February (27.3°C).
The months with the lowest average high temperature are June and July (16.2°C).
- Average low temperature in December: 14.4°C
The months with the highest average low temperature are January and February (15.8°C).
The coldest month (with the lowest average low temperature) is August (7.6°C).
Average pressure in December
Stellenbosch, South Africa
- Average pressure in December: 1014.2mbar
The month with the highest atmospheric pressure is July (1022.1mbar).
The month with the lowest atmospheric pressure is February (1013.4mbar).
Average wind speed in December
Stellenbosch, South Africa
- Average wind speed in December: 13.2km/h
The windiest months (with the highest average wind speed) are January and November (13.5km/h).
The calmest month (with the lowest average wind speed) is May (11.1km/h).
Average humidity in December
Stellenbosch, South Africa
- Average humidity in December: 67%
The months with the highest relative humidity are August and September (77%).
The month with the lowest relative humidity is February (66%).
Average rainfall in December
Stellenbosch, South Africa
- Average rainfall in December: 18mm
The wettest month (with the highest rainfall) is June (103mm).
The driest month (with the least rainfall) is February (8mm).
Average rainfall days in December
Stellenbosch, South Africa
- Average rainfall days in December: 7.2 days
The month with the highest number of rainy days is August (13.5 days).
The month with the least rainy days is February (4.5 days).
Average daylight in December /
Average sunshine in December
Stellenbosch, 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: 11h and 1min
The month with the most sunshine is December (Average sunshine: 11h and 12min).
The month with the least sunshine is June (Average sunshine: 5h and 54min).
Average sunshine days in December
Stellenbosch, South Africa
- Average sunshine days in December: 22.4 days
The month with the most sunshine days is March (23.1 days).
The month with the least sunshine days is June (14.5 days).
Average UV index in December
Stellenbosch, 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 April, May, June, July, August and September (UV index 4).
Average cloud cover in December
Stellenbosch, South Africa
- Average cloud cover in December: 19
The month with the most cloud cover is June (Cloud cover 35).
The month with the least cloud cover is February (Cloud cover 15).
Average visibility in December
Stellenbosch, South Africa
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, June, October, November and December (10km).
The months with the lowest visibility are May, July, August and September (9km).
Stellenbosch, South Africa
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