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
The onset of December marks an average high-temperature of a still moderately hot 25°C (77°F), hardly differing from November's 23.4°C (74.1°F). Hillcrest's nighttime temperature in December drops to an average of 18.6°C (65.5°F).Humidity
With an average relative humidity of 83%, December is the most humid month.Rainfall
December is the month with the most rainfall in Hillcrest. Rain falls for 21.7 days and accumulates 78mm (3.07") of precipitation.Daylight
December has the longest days of the year in Hillcrest, with an average of 14h and 0min of daylight.On the first day of the month, sunrise is at 04:48 and sunset at 18:43. On the last day of December, in Hillcrest, sunrise is at 04:59 and sunset at 19:00 SAST.
Sunshine
In Hillcrest, the average sunshine in December is 7.3h.UV index
The months with the highest UV index are January through March and December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for the average person.Note: In December, an average UV index of 6 transforms into the following instructions:
Shield from overexposure. Defense against sun-related harm is required. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are December temperatures in Hillcrest?
What is the most humid month in Hillcrest?
What is the average humidity in December in Hillcrest?
What is the rainiest month in Hillcrest?
How much does it rain in Hillcrest in December?
When are the longest days in Hillcrest?
How many hours of daylight does Hillcrest have in December?
When is the sunrise / sunset in December in Hillcrest?
How many hours of sunshine does Hillcrest have in December?
What are the months with the highest UV index in Hillcrest?
What is the UV index reading in December in Hillcrest?
Average temperature in December
Hillcrest, South Africa
- Average high temperature in December: 25°C
The warmest month (with the highest average high temperature) is February (26.6°C).
The month with the lowest average high temperature is July (21.2°C).
- Average low temperature in December: 18.6°C
The month with the highest average low temperature is February (20°C).
The coldest month (with the lowest average low temperature) is July (13.2°C).
Average pressure in December
Hillcrest, South Africa
- Average pressure in December: 1014.3mbar
The month with the highest atmospheric pressure is July (1023.2mbar).
The month with the lowest atmospheric pressure is January (1014.2mbar).
Average wind speed in December
Hillcrest, South Africa
- Average wind speed in December: 12.6km/h
The windiest month (with the highest average wind speed) is October (13.9km/h).
The calmest month (with the lowest average wind speed) is May (10.7km/h).
Average humidity in December
Hillcrest, South Africa
- Average humidity in December: 83%
The month with the highest relative humidity is December (83%).
The months with the lowest relative humidity are June and July (64%).
Average rainfall in December
Hillcrest, South Africa
- Average rainfall in December: 78mm
The wettest month (with the highest rainfall) is December (78mm).
The driest month (with the least rainfall) is June (10mm).
Average rainfall days in December
Hillcrest, South Africa
- Average rainfall days in December: 21.7 days
The month with the highest number of rainy days is December (21.7 days).
The month with the least rainy days is June (5.8 days).
Average daylight in December /
Average sunshine in December
Hillcrest, South Africa
- Average daylight in December: 14h and 0min
The month with the longest days is December (Average daylight: 14h and 0min).
The month with the shortest days is June (Average daylight: 10h and 18min).
- Average sunshine in December: 7h and 2min
The month with the most sunshine is February (Average sunshine: 8h and 36min).
The month with the least sunshine is April (Average sunshine: 6h and 0min).
Average sunshine days in December
Hillcrest, South Africa
- Average sunshine days in December: 6.5 days
The months with the most sunshine days are June and July (22.1 days).
The month with the least sunshine days is December (6.5 days).
Average UV index in December
Hillcrest, South Africa
- Average UV index in December: 6
The months with the highest UV index are January, February, March and December (UV index 6).
The months with the lowest UV index are April, May, June, July, August, September, October and November (UV index 5).
Average cloud cover in December
Hillcrest, South Africa
- Average cloud cover in December: 57
The month with the most cloud cover is December (Cloud cover 57).
The month with the least cloud cover is June (Cloud cover 17).
Average visibility in December
Hillcrest, South Africa
- Average visibility in December: 9km
The months with the highest visibility are April, May, June, July, August and September (10km).
The months with the lowest visibility are January, February, March, October, November and December (9km).
