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 advent of December denotes an average high-temperature of a still moderately hot 26.5°C (79.7°F), subtly different from November's 26.2°C (79.2°F). In the month of December, Casseldale records a consistent average low-temperature of 15.7°C (60.3°F).Humidity
The average relative humidity in December is 64%.Rainfall
In December, the rain falls for 19.2 days. Throughout December, 85mm (3.35") of precipitation is accumulated. In Casseldale, during the entire year, the rain falls for 112.6 days and collects up to 431mm (16.97") of precipitation.Daylight
With an average of 13h and 48min of daylight, December has the longest days of the year in Casseldale.On the first day of the month, sunrise is at 05:05 and sunset at 18:45. On the last day of December, sunrise is at 05:16 and sunset at 19:02 SAST.
Sunshine
In December, the average sunshine is 11.1h.UV index
In Casseldale, the average daily maximum UV index in December is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: A maximum high UV index of 5 in December translates into the following recommendations:
Make use of precautions - It is urged to ward off sun damage. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Casseldale in December?
What is the average humidity in December in Casseldale?
How many days does it rain in December in Casseldale?
When are the longest days in Casseldale?
How many hours of daylight does Casseldale have in December?
When are sunrise and sunset in December in Casseldale?
How many hours of sunshine does Casseldale have in December?
How high is the UV index in December in Casseldale?
Average temperature in December
Casseldale, 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: 15.7°C
The month with the highest average low temperature is December (15.7°C).
The coldest month (with the lowest average low temperature) is July (5.5°C).
Average pressure in December
Casseldale, South Africa
- Average pressure in December: 1013.7mbar
The month with the highest atmospheric pressure is July (1024.7mbar).
The month with the lowest atmospheric pressure is January (1013.5mbar).
Average wind speed in December
Casseldale, South Africa
- Average wind speed in December: 10km/h
The windiest month (with the highest average wind speed) is October (12km/h).
The calmest month (with the lowest average wind speed) is March (8.3km/h).
Average humidity in December
Casseldale, South Africa
- Average humidity in December: 64%
The month with the highest relative humidity is February (69%).
The month with the lowest relative humidity is September (35%).
Average rainfall in December
Casseldale, South Africa
- Average rainfall in December: 85mm
The wettest month (with the highest rainfall) is January (88mm).
The driest months (with the least rainfall) are June and July (1mm).
Average rainfall days in December
Casseldale, South Africa
- Average rainfall days in December: 19.2 days
The month with the highest number of rainy days is January (20 days).
The month with the least rainy days is June (0.9 days).
Average daylight in December /
Average sunshine in December
Casseldale, 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 42min).
The month with the least sunshine is August (Average sunshine: 7h and 24min).
Average sunshine days in December
Casseldale, South Africa
- Average sunshine days in December: 9.2 days
The month with the most sunshine days is July (29.6 days).
The month with the least sunshine days is December (9.2 days).
Average UV index in December
Casseldale, 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
Casseldale, South Africa
- Average cloud cover in December: 28
The month with the most cloud cover is January (Cloud cover 30).
The month with the least cloud cover is August (Cloud cover 6).
Average visibility in December
Casseldale, 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).
Casseldale, South Africa
Weather forecast for your location
2. Allow the app to use your location