December weather forecastMount Cotton, Australia

December

Weather in December

The first month of the summer, December, is also a moderately hot month in Mount Cotton, Australia, with temperature in the range of an average low of 20.8°C (69.4°F) and an average high of 27.2°C (81°F).

Temperature

Mount Cotton signifies an average high-temperature of a still moderately hot 27.2°C (81°F) in December, closely mirroring the 26.5°C (79.7°F) of November. Mount Cotton's nights in December experience an average temperature drop to a pleasant 20.8°C (69.4°F).

Heat index

The heat index value for December is calculated to be a tropical 30°C (86°F). Exhaustion might be the outcome of enduring exposure and continuous activity, with a risk of heat cramps.
Data suggests that the heat index is set for environments in shade and with a light wind. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'real feel' or 'apparent temperature', reflects the feeling of heat when considering both air temperature and humidity. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.

Humidity

The average relative humidity in December is 74%.

Rainfall

In December, the rain falls for 17.1 days. Throughout December, 71mm (2.8") of precipitation is accumulated. Throughout the year, in Mount Cotton, there are 178.8 rainfall days, and 665mm (26.18") of precipitation is accumulated.

Daylight

The month with the longest days in Mount Cotton is December, with an average of 13h and 54min of daylight.
On the first day of the month, sunrise is at 4:43 am and sunset at 6:28 pm. On the last day of December, in Mount Cotton, sunrise is at 4:54 am and sunset at 6:45 pm AEST.

Sunshine

In December, the average sunshine in Mount Cotton, Australia, is 9.9h.

UV index

January through March, October through December, with an average maximum UV index of 6, are months with the highest UV index in Mount Cotton. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for average individuals.
Note: The maximum daily UV index, 6 in December, converts into the following recommendations:
Guard against overexposure. Protection from sun-induced harm is essential. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.

Updated: Jan 26, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

In Mount Cotton, 27.2°C (81°F) is the average high-temperature and 20.8°C (69.4°F) is the average low-temperature during December. In December, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, is calculated to be 30°C (86°F).

In Mount Cotton, the average relative humidity in December is 74%.

In December, the rain falls for 17.1 days. Throughout December, 71mm (2.8") of precipitation is accumulated.

The month with the longest days is December, with an average of 13h and 54min of daylight.

In December, the average day length in Mount Cotton, Australia, is 13h and 52min.

On the first day of December in Mount Cotton, Australia, sunrise is at 4:43 am and sunset at 6:28 pm. On the last day of the month, sunrise is at 4:54 am and sunset at 6:45 pm AEST.

In Mount Cotton, the average sunshine duration in December is 9.9h.

The months with the highest UV index in Mount Cotton are January through March, October through December, with an average maximum UV index of 6.

In Mount Cotton, the average daily maximum UV index in December is 6. A UV Index estimate of 6 to 7 represents a high health threat from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

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

Nov

December

Jan

Average high temperature

26.5°C

27.2°C

28.1°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

16.1km/h

16.2km/h

16km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

14.7

10.9

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Mount Cotton, Australia

Average high temperature in December: 27.2°C

The warmest month (with the highest average high temperature) is January (28.1°C).
The month with the lowest average high temperature is July (19.4°C).

Average low temperature in December: 20.8°C

The month with the highest average low temperature is January (22.1°C).
The coldest month (with the lowest average low temperature) is July (12.7°C).

Average pressure in December
Mount Cotton, Australia

Average pressure in December: 1013.3mbar

The month with the highest atmospheric pressure is July (1020.6mbar).
The month with the lowest atmospheric pressure is January (1012.3mbar).

Average wind speed in December
Mount Cotton, Australia

Average wind speed in December: 15km/h

The windiest month (with the highest average wind speed) is February (16.4km/h).
The calmest months (with the lowest average wind speed) are May and August (13.7km/h).

Average humidity in December
Mount Cotton, Australia

Average humidity in December: 74%

The months with the highest relative humidity are February and March (77%).
The month with the lowest relative humidity is August (68%).

Average rainfall in December
Mount Cotton, Australia

Average rainfall in December: 71mm

The wettest month (with the highest rainfall) is March (89mm).
The driest month (with the least rainfall) is September (26mm).

Average rainfall days in December
Mount Cotton, Australia

Average rainfall days in December: 17.1 days

The month with the highest number of rainy days is March (20.1 days).
The month with the least rainy days is August (9.5 days).

Average daylight in December /
Average sunshine in December
Mount Cotton, Australia

Average daylight in December: 13h and 54min

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: 9h and 54min

The month with the most sunshine is November (Average sunshine: 10h and 36min).
The month with the least sunshine is June (Average sunshine: 6h and 12min).

Average sunshine days in December
Mount Cotton, Australia

Average sunshine days in December: 10.9 days

The month with the most sunshine days is August (18.3 days).
The month with the least sunshine days is March (7.9 days).

Average UV index in December
Mount Cotton, Australia

Average UV index in December: 6

The months with the highest UV index are January, February, March, October, November and December (UV index 6).
The month with the lowest UV index is June (UV index 4).

Average cloud cover in December
Mount Cotton, Australia

Average cloud cover in December: 38

The months with the most cloud cover are February and March (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 19).

Average visibility in December
Mount Cotton, Australia

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).