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 average high-temperature for December is a still warm 26.5°C (79.7°F), closely aligning with the temperature of the preceding month. In December, the nighttime temperature in Grootvlei, South Africa, lowers to an average of 15.5°C (59.9°F).Humidity
In December, the average relative humidity is 63%.Rainfall
December is the month with the most rainfall in Grootvlei. Rain falls for 19.5 days and accumulates 93mm (3.66") of precipitation.Daylight
The month with the longest days in Grootvlei is December, with an average of 13h and 48min of daylight.On the first day of the month, sunrise is at 05:03 and sunset at 18:46. On the last day of December, sunrise is at 05:15 and sunset at 19:02 SAST.
Sunshine
In December, the average sunshine in Grootvlei is 11.2h.UV index
In Grootvlei, the average daily maximum UV index in December is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: The maximum UV index, 5 during December, leads to the following recommendations:
Make use of precautions - Shielding skin and eyes from injury is a requirement. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Stay sun-safe with clothing that is both closely woven and worn loosely.
Frequently asked questions
What are the temperatures in Grootvlei in December?
What is the average humidity in December in Grootvlei?
What is the wettest month in Grootvlei?
How much does it rain in Grootvlei in December?
When are the longest days in Grootvlei?
How many hours of daylight does Grootvlei have in December?
What time are sunrise and sunset in December in Grootvlei?
How long on average sun shines in December in Grootvlei?
How high is the UV index in December in Grootvlei?
Average temperature in December
Grootvlei, South Africa
- Average high temperature in December: 26.5°C
The warmest month (with the highest average high temperature) is January (26.6°C).
The month with the lowest average high temperature is July (17.3°C).
- Average low temperature in December: 15.5°C
The month with the highest average low temperature is December (15.5°C).
The coldest month (with the lowest average low temperature) is July (5.2°C).
Average pressure in December
Grootvlei, South Africa
- Average pressure in December: 1013.8mbar
The month with the highest atmospheric pressure is July (1024.8mbar).
The month with the lowest atmospheric pressure is January (1013.6mbar).
Average wind speed in December
Grootvlei, South Africa
- Average wind speed in December: 10.2km/h
The windiest months (with the highest average wind speed) are September and October (12.1km/h).
The calmest months (with the lowest average wind speed) are March and May (8.3km/h).
Average humidity in December
Grootvlei, South Africa
- Average humidity in December: 63%
The months with the highest relative humidity are January and February (68%).
The month with the lowest relative humidity is September (35%).
Average rainfall in December
Grootvlei, South Africa
- Average rainfall in December: 93mm
The wettest month (with the highest rainfall) is December (93mm).
The driest month (with the least rainfall) is July (1mm).
Average rainfall days in December
Grootvlei, South Africa
- Average rainfall days in December: 19.5 days
The month with the highest number of rainy days is January (20.4 days).
The month with the least rainy days is June (1.5 days).
Average daylight in December /
Average sunshine in December
Grootvlei, 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 1min
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 24min).
Average sunshine days in December
Grootvlei, South Africa
- Average sunshine days in December: 8 days
The month with the most sunshine days is July (29.1 days).
The month with the least sunshine days is January (7.8 days).
Average UV index in December
Grootvlei, South Africa
- Average UV index in December: 5
The months with the highest UV index are January, October and November (UV index 6).
The months with the lowest UV index are May, June and July (UV index 4).
Average cloud cover in December
Grootvlei, South Africa
- Average cloud cover in December: 27
The month with the most cloud cover is January (Cloud cover 30).
The months with the least cloud cover are July and August (Cloud cover 6).
Average visibility in December
Grootvlei, South Africa
- Average visibility in December: 9km
The months with the highest visibility are April, May, June, July, August, September, October and November (10km).
The months with the lowest visibility are January, February, March and December (9km).
Grootvlei, South Africa
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