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
As Grunau steps into December, the average high-temperature holds at a still tropical 33.6°C (92.5°F), hinting at a minor fluctuation from the prior month. In stark contrast to the day's heat, the temperature dips to an average of 18.6°C (65.5°F) during December nights.Humidity
The average relative humidity in December is 32%.Rainfall
In Grunau, during December, the rain falls for 2.4 days and regularly aggregates up to 3mm (0.12") of precipitation. Throughout the year, there are 28.1 rainfall days, and 43mm (1.69") of precipitation is accumulated.Daylight
With an average of 13h and 54min of daylight, December has the longest days of the year.On the first day of the month, sunrise is at 05:42 and sunset at 19:28. On the last day of December, sunrise is at 05:53 and sunset at 19:45 CAT.
Sunshine
December has the most sunshine of the year, with an average of 12.2h of sunshine.UV index
January through March, November and December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: A daily maximum UV index of 7 in December translates into the following instructions:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. 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. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in December?
What is the average humidity in December?
How much does it rain in December?
When are the longest days?
What is the average length of the day in December?
When is the sunrise / sunset in December?
What month has the most sunshine?
How long on average sun shines in December?
What is the month with the highest UV index?
What is the UV index intensity in December?
Average temperature in December
Grunau, Namibia
- Average high temperature in December: 33.6°C
The warmest month (with the highest average high temperature) is January (34.4°C).
The month with the lowest average high temperature is June (20.8°C).
- Average low temperature in December: 18.6°C
The month with the highest average low temperature is February (21.3°C).
The coldest month (with the lowest average low temperature) is July (9.1°C).
Average pressure in December
Grunau, Namibia
- Average pressure in December: 1011.8mbar
The month with the highest atmospheric pressure is July (1021.9mbar).
The months with the lowest atmospheric pressure are January and February (1011.2mbar).
Average wind speed in December
Grunau, Namibia
- Average wind speed in December: 12.2km/h
The windiest month (with the highest average wind speed) is December (12.2km/h).
The calmest month (with the lowest average wind speed) is May (9.7km/h).
Average humidity in December
Grunau, Namibia
- Average humidity in December: 32%
The month with the highest relative humidity is June (41%).
The month with the lowest relative humidity is November (29%).
Average rainfall in December
Grunau, Namibia
- Average rainfall in December: 3mm
The wettest month (with the highest rainfall) is February (14mm).
The driest months (with the least rainfall) are June, July, August and September (1mm).
Average rainfall days in December
Grunau, Namibia
- Average rainfall days in December: 2.4 days
The month with the highest number of rainy days is February (5.7 days).
The month with the least rainy days is November (0.9 days).
Average daylight in December /
Average sunshine in December
Grunau, Namibia
- Average daylight in December: 13h and 5min
The month with the longest days is December (Average daylight: 13h and 54min).
The month with the shortest days is June (Average daylight: 10h and 24min).
- Average sunshine in December: 12h and 1min
The month with the most sunshine is December (Average sunshine: 12h and 12min).
The months with the least sunshine are April, May and June (Average sunshine: 9h and 36min).
Average sunshine days in December
Grunau, Namibia
- Average sunshine days in December: 27.5 days
The month with the most sunshine days is July (29.4 days).
The month with the least sunshine days is February (20.3 days).
Average UV index in December
Grunau, Namibia
- Average UV index in December: 7
The months with the highest UV index are January, February, March, November and December (UV index 7).
The months with the lowest UV index are May, June, July and August (UV index 5).
Average cloud cover in December
Grunau, Namibia
- Average cloud cover in December: 5
The months with the most cloud cover are February and April (Cloud cover 9).
The months with the least cloud cover are July, August and December (Cloud cover 5).
Average visibility in December
Grunau, Namibia
- 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).
