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 transition from November to December brings an average high-temperature of a still warm 29.7°C (85.5°F), barely different from November's 29.5°C (85.1°F). In December, Hammanskraal records an average nighttime temperature of 18.5°C (65.3°F).Heat index
December's mean heat index is calculated to be a tropical 32°C (89.6°F). Persistent activity under exposure might lead to a feeling of weariness, with subsequent heat cramps.Research indicates the heat index considers values in shaded locales and with light winds. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', quantifies the warmth felt when relative humidity is considered. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children frequently do not understand the need for recuperation and hydration. Thirst, being a late manifestation of dehydration, underlines the need to hydrate frequently, especially when engaging in prolonged physical exercises.
Humidity
In Hammanskraal, South Africa, the average relative humidity in December is 57%.Rainfall
In Hammanskraal, in December, it is raining for 17 days, with typically 71mm (2.8") of accumulated precipitation. Throughout the year, in Hammanskraal, there are 95.5 rainfall days, and 331mm (13.03") of precipitation is accumulated.Daylight
The month with the longest days in Hammanskraal is December, with an average of 13h and 42min of daylight.On the first day of December in Hammanskraal, sunrise is at 05:07 and sunset at 18:44. On the last day of the month, sunrise is at 05:19 and sunset at 19:00 SAST.
Sunshine
In December, the average sunshine in Hammanskraal is 11.3h.UV index
The months with the highest UV index are January through March, September through December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 6 in December translates into these instructions:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in Hammanskraal in December?
What is the average humidity in December in Hammanskraal?
How much does it rain in Hammanskraal in December?
When are the longest days in Hammanskraal?
How many hours of daylight does Hammanskraal have in December?
When are sunrise and sunset in December in Hammanskraal?
How long on average sun shines in December in Hammanskraal?
When is the highest UV index in Hammanskraal?
What is the UV index intensity in December in Hammanskraal?
Average temperature in December
Hammanskraal, South Africa
- Average high temperature in December: 29.7°C
The warmest month (with the highest average high temperature) is January (30.1°C).
The month with the lowest average high temperature is June (19.8°C).
- Average low temperature in December: 18.5°C
The month with the highest average low temperature is January (19°C).
The coldest month (with the lowest average low temperature) is July (7.3°C).
Average pressure in December
Hammanskraal, South Africa
- Average pressure in December: 1013.2mbar
The month with the highest atmospheric pressure is July (1024.5mbar).
The month with the lowest atmospheric pressure is January (1012.9mbar).
Average wind speed in December
Hammanskraal, South Africa
- Average wind speed in December: 10km/h
The windiest month (with the highest average wind speed) is October (11.6km/h).
The calmest month (with the lowest average wind speed) is May (7.3km/h).
Average humidity in December
Hammanskraal, South Africa
- Average humidity in December: 57%
The months with the highest relative humidity are January and February (59%).
The month with the lowest relative humidity is September (34%).
Average rainfall in December
Hammanskraal, South Africa
- Average rainfall in December: 71mm
The wettest month (with the highest rainfall) is January (74mm).
The driest month (with the least rainfall) is July (0mm).
Average rainfall days in December
Hammanskraal, South Africa
- Average rainfall days in December: 17 days
The month with the highest number of rainy days is January (17.8 days).
The months with the least rainy days are July and August (0.8 days).
Average daylight in December /
Average sunshine in December
Hammanskraal, South Africa
- Average daylight in December: 13h and 4min
The month with the longest days is December (Average daylight: 13h and 42min).
The month with the shortest days is June (Average daylight: 10h and 36min).
- Average sunshine in December: 11h and 2min
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 30min).
Average sunshine days in December
Hammanskraal, South Africa
- Average sunshine days in December: 10.1 days
The month with the most sunshine days is July (30.3 days).
The month with the least sunshine days is January (9.9 days).
Average UV index in December
Hammanskraal, South Africa
- Average UV index in December: 6
The months with the highest UV index are January, February, March, September, October, November and December (UV index 6).
The months with the lowest UV index are May, June and July (UV index 4).
Average cloud cover in December
Hammanskraal, South Africa
- Average cloud cover in December: 24
The month with the most cloud cover is January (Cloud cover 25).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in December
Hammanskraal, South Africa
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
