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
Stompneusbaai transitions into December recording an average high-temperature of a still warm 27.1°C (80.8°F), closely aligning with the preceding month's temperature. In Stompneusbaai, the average temperature during the nights of December marks a significant drop from the daily high, settling at a mild 14.3°C (57.7°F).Heat index
The average heat index in December is calculated to be 28°C (82.4°F). Persistently participating in activities during exposure may lead to fatigue and induce heat cramps.Heat index guidelines indicate values are for light wind scenarios and shaded regions. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'feels like' or 'real feel', takes into account both air temperature and humidity to illustrate what people actually feel. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
Humidity
The average relative humidity in December is 62%.Rainfall
In Stompneusbaai, during December, the rain falls for 6.6 days and regularly aggregates up to 16mm (0.63") of precipitation. Throughout the year, in Stompneusbaai, South Africa, there are 98.9 rainfall days, and 437mm (17.2") of precipitation is accumulated.Daylight
December has the longest days of the year in Stompneusbaai, South Africa, with an average of 14h and 18min of daylight.On the first day of the month, sunrise is at 05:32 and sunset at 19:41. On the last day of December, sunrise is at 05:43 and sunset at 19:59 SAST.
Sunshine
January and December, with an average of 11.2h of sunshine, are months with the most sunshine.UV index
The months with the highest UV index are January, February, November and December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: In December, a daily maximum UV index of 6 leads to the following instructions:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in December in Stompneusbaai?
What is the average humidity in December in Stompneusbaai?
How much does it rain in Stompneusbaai in December?
When are the longest days in Stompneusbaai?
What is the average length of the day in December in Stompneusbaai?
When are sunrise and sunset in December in Stompneusbaai?
What is the month with the most sunshine in Stompneusbaai?
How long on average sun shines in December in Stompneusbaai?
What are the months with the highest UV index in Stompneusbaai?
How high is the UV index in December in Stompneusbaai?
Average temperature in December
Stompneusbaai, South Africa
- Average high temperature in December: 27.1°C
The warmest month (with the highest average high temperature) is February (29.1°C).
The months with the lowest average high temperature are June and July (16.3°C).
- Average low temperature in December: 14.3°C
The month with the highest average low temperature is January (15.8°C).
The coldest month (with the lowest average low temperature) is August (6.7°C).
Average pressure in December
Stompneusbaai, South Africa
- Average pressure in December: 1014mbar
The month with the highest atmospheric pressure is July (1022.1mbar).
The months with the lowest atmospheric pressure are January and February (1013.3mbar).
Average wind speed in December
Stompneusbaai, South Africa
- Average wind speed in December: 10.9km/h
The windiest months (with the highest average wind speed) are January and November (11.4km/h).
The calmest month (with the lowest average wind speed) is May (9.4km/h).
Average humidity in December
Stompneusbaai, South Africa
- Average humidity in December: 62%
The month with the highest relative humidity is August (76%).
The months with the lowest relative humidity are January and February (61%).
Average rainfall in December
Stompneusbaai, South Africa
- Average rainfall in December: 16mm
The wettest month (with the highest rainfall) is June (107mm).
The driest month (with the least rainfall) is February (6mm).
Average rainfall days in December
Stompneusbaai, South Africa
- Average rainfall days in December: 6.6 days
The month with the highest number of rainy days is August (12.4 days).
The month with the least rainy days is February (3.7 days).
Average daylight in December /
Average sunshine in December
Stompneusbaai, South Africa
- Average daylight in December: 14h and 2min
The month with the longest days is December (Average daylight: 14h and 18min).
The month with the shortest days is June (Average daylight: 10h and 0min).
- Average sunshine in December: 11h and 1min
The months with the most sunshine are January and December (Average sunshine: 11h and 12min).
The month with the least sunshine is June (Average sunshine: 6h and 0min).
Average sunshine days in December
Stompneusbaai, South Africa
- Average sunshine days in December: 22.7 days
The month with the most sunshine days is March (24.3 days).
The month with the least sunshine days is June (16.1 days).
Average UV index in December
Stompneusbaai, South Africa
- Average UV index in December: 6
The months with the highest UV index are January, February, November and December (UV index 6).
The month with the lowest UV index is June (UV index 3).
Average cloud cover in December
Stompneusbaai, South Africa
- Average cloud cover in December: 17
The month with the most cloud cover is June (Cloud cover 33).
The month with the least cloud cover is February (Cloud cover 12).
Average visibility in December
Stompneusbaai, South Africa
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, November and December (10km).
The months with the lowest visibility are May, June, July, August, September and October (9km).
