December weather forecastOnankali, Namibia

December

Weather in December

The first month of the summer, December, is also a hot month in Onankali, Namibia, with an average temperature varying between 23.3°C (73.9°F) and 31.8°C (89.2°F).

Temperature

The arrival of December sees a recorded average high-temperature of a still hot 31.8°C (89.2°F), showing little divergence from the previous month's conditions. Throughout December, a steady low-temperature average of 23.3°C (73.9°F) is noted.

Heat index

In December, the heat index is appraised at a tropical 33°C (91.4°F). Special measures are necessary to avoid heat cramps and heat exhaustion. Persistent activity could result in heatstroke.
When referencing the heat index, its values are suitable for shady environments and light breezes. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', represents the fusion of temperature and moisture in the air to suggest how warm it feels. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. 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 highly critical for babies and toddlers. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.

Humidity

In December, the average relative humidity is 44%.

Rainfall

In Onankali, during December, the rain falls for 16.4 days and regularly aggregates up to 61mm (2.4") of precipitation. In Onankali, during the entire year, the rain falls for 91.8 days and collects up to 272mm (10.71") of precipitation.

Daylight

With an average of 13h and 12min of daylight, December has the longest days of the year.
On the first day of December, sunrise is at 06:09 and sunset at 19:17. On the last day of the month, sunrise is at 06:21 and sunset at 19:33 CAT.

Sunshine

In Onankali, the average sunshine in December is 9.1h.

UV index

The months with the highest UV index are January, September through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the ordinary person.
Note: The UV index of 7 in December translates into these instructions:
Stay clear of intense sun exposure. Solar protection is of utmost significance. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.

Updated: Jun 4, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

During December, Onankali experiences an average high-temperature of 31.8°C (89.2°F) and a low-temperature of 23.3°C (73.9°F). In December, the average heat index (a.k.a. 'real feel', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, is appraised at 33°C (91.4°F).

In Onankali, the average relative humidity in December is 44%.

In Onankali, during December, the rain falls for 16.4 days and regularly aggregates up to 61mm (2.4") of precipitation.

The month with the longest days is December, with an average of 13h and 12min of daylight.

The average day length in December in Onankali is 13h and 12min.

In December, on the first day of the month, sunrise is at 06:09 and sunset at 19:17. On the last day of the month, sunrise is at 06:21 and sunset at 19:33 CAT.

The average sunshine duration in December is 9.1h.

January, September through December, with an average maximum UV index of 7, are months with the highest UV index.

In Onankali, the average daily maximum UV index in December is 7. A UV Index reading of 6 to 7 represents a high hazard to health from exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

33.1°C

31.8°C

31.4°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

13km/h

12.4km/h

12km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

15.5

12.6

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Onankali, Namibia

Average high temperature in December: 31.8°C

The warmest month (with the highest average high temperature) is October (35.8°C).
The month with the lowest average high temperature is June (26.7°C).

Average low temperature in December: 23.3°C

The month with the highest average low temperature is December (23.3°C).
The coldest month (with the lowest average low temperature) is July (11.3°C).

Average pressure in December
Onankali, Namibia

Average pressure in December: 1009.4mbar

The month with the highest atmospheric pressure is July (1018.7mbar).
The months with the lowest atmospheric pressure are January and December (1009.4mbar).

Average wind speed in December
Onankali, Namibia

Average wind speed in December: 10.6km/h

The windiest month (with the highest average wind speed) is July (13.4km/h).
The calmest month (with the lowest average wind speed) is February (9.6km/h).

Average humidity in December
Onankali, Namibia

Average humidity in December: 44%

The month with the highest relative humidity is March (55%).
The month with the lowest relative humidity is September (17%).

Average rainfall in December
Onankali, Namibia

Average rainfall in December: 61mm

The wettest month (with the highest rainfall) is January (62mm).
The driest months (with the least rainfall) are May, June, July, August and September (0mm).

Average rainfall days in December
Onankali, Namibia

Average rainfall days in December: 16.4 days

The month with the highest number of rainy days is March (17.5 days).
The months with the least rainy days are July and August (0 days).

Average daylight in December /
Average sunshine in December
Onankali, Namibia

Average daylight in December: 13h and 12min

The month with the longest days is December (Average daylight: 13h and 12min).
The month with the shortest days is June (Average daylight: 11h and 6min).

Average sunshine in December: 9h and 6min

The months with the most sunshine are August and September (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 8h and 54min).

Average sunshine days in December
Onankali, Namibia

Average sunshine days in December: 12 days

The months with the most sunshine days are July and August (31 days).
The month with the least sunshine days is February (11.2 days).

Average UV index in December
Onankali, Namibia

Average UV index in December: 7

The months with the highest UV index are January, September, October, November and December (UV index 7).
The months with the lowest UV index are June and July (UV index 5).

Average cloud cover in December
Onankali, Namibia

Average cloud cover in December: 25

The months with the most cloud cover are January, February and March (Cloud cover 28).
The month with the least cloud cover is August (Cloud cover 1).

Average visibility in December
Onankali, 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).