December weather forecast
Cooranbong, Australia

December

Weather in December

The first month of the summer, December, is also a moderately hot month in Cooranbong, Australia, with an average temperature fluctuating between 16.2°C (61.2°F) and 28.3°C (82.9°F).

Temperature

With the onset of December, the average high-temperature registers at a still moderately hot 28.3°C (82.9°F), subtly different from November's 26.5°C (79.7°F). A sharp divergence from daytime highs is noted in Cooranbong during the month of December, with the average nighttime temperature settling at an enjoyable 16.2°C (61.2°F).

Heat index

The heat index value during December is calculated to be a tropical 31°C (87.8°F). Continuing activity during long-lasting exposure might induce tiredness and result in heat cramps.
Heat index determinations are made taking into account the shade and light air movements. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', gauges the sensation of temperature factoring in the air's moisture content. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Younglings frequently fail to recognize the requirement to rest and rehydrate. Thirst emerges late in dehydration - it is imperative to keep hydration levels high, particularly during extended physical exertions.

Humidity

In December, the average relative humidity in Cooranbong is 70%.

Rainfall

In Cooranbong, in December, it is raining for 14.3 days, with typically 45mm (1.77") of accumulated precipitation. In Cooranbong, during the entire year, the rain falls for 149.9 days and collects up to 518mm (20.39") of precipitation.

Daylight

With an average of 14h and 18min of daylight, December has the longest days of the year.
On the first day of the month, sunrise is at 5:38 am and sunset at 7:48 pm. On the last day of December, in Cooranbong, sunrise is at 5:48 am and sunset at 8:06 pm AEDT.

Sunshine

November and December, with an average of 9.7h of sunshine, are months with the most sunshine in Cooranbong.

UV index

The months with the highest UV index are January, February, October through December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: A maximum UV index of 6 in December translates into the following recommendations:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.

Frequently asked questions

How hot is it in Cooranbong in December?
The average high-temperature, in December, in Cooranbong, is 28.3°C (82.9°F), while the average low-temperature is 16.2°C (61.2°F). In December, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which factors the actual air temperature with the relative humidity, is calculated to be 31°C (87.8°F).
What is the average humidity in December in Cooranbong?
In December, the average relative humidity in Cooranbong, Australia, is 70%.
How much does it rain in Cooranbong in December?
In Cooranbong, Australia, in December, during 14.3 rainfall days, 45mm (1.77") of precipitation is typically accumulated.
When are the longest days in Cooranbong?
December has the longest days of the year in Cooranbong, with an average of 14h and 18min of daylight.
How many hours of daylight does Cooranbong have in December?
In December, the average day length in Cooranbong, Australia, is 14h and 17min.
When are sunrise and sunset in December in Cooranbong?
On the first day of December, sunrise is at 5:38 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 5:48 am and sunset at 8:06 pm AEDT.
What are the months with the most sunshine in Cooranbong?
November and December, with an average of 9.7h of sunshine, are months with the most sunshine in Cooranbong.
How long on average sun shines in December in Cooranbong?
The average sunshine duration in December in Cooranbong is 9.7h.
What is the month with the highest UV index in Cooranbong?
January, February, October through December, with an average maximum UV index of 6, are months with the highest UV index.
How high is the UV index in December in Cooranbong?
The average daily maximum UV index in December is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in December - Cooranbong, Australia
Average temperature in December
Cooranbong, Australia
  • Average high temperature in December: 28.3°C

The warmest month (with the highest average high temperature) is January (29.9°C).
The months with the lowest average high temperature are June and July (16.3°C).

  • Average low temperature in December: 16.2°C

The month with the highest average low temperature is January (18°C).
The coldest month (with the lowest average low temperature) is July (7.1°C).

Average pressure in December - Cooranbong, Australia
Average pressure in December
Cooranbong, Australia
  • Average pressure in December: 1013.3mbar

The month with the highest atmospheric pressure is June (1021.2mbar).
The month with the lowest atmospheric pressure is January (1012.8mbar).

Average wind speed in December - Cooranbong, Australia
Average wind speed in December
Cooranbong, Australia
  • Average wind speed in December: 8.3km/h

The windiest month (with the highest average wind speed) is August (8.7km/h).
The calmest month (with the lowest average wind speed) is April (7.3km/h).

Average humidity in December - Cooranbong, Australia
Average humidity in December
Cooranbong, Australia
  • Average humidity in December: 70%

The month with the highest relative humidity is June (81%).
The month with the lowest relative humidity is September (69%).

Average rainfall in December - Cooranbong, Australia
Average rainfall in December
Cooranbong, Australia
  • Average rainfall in December: 45mm

The wettest month (with the highest rainfall) is February (86mm).
The driest month (with the least rainfall) is May (23mm).

Average rainfall days in December - Cooranbong, Australia
Average rainfall days in December
Cooranbong, Australia
  • Average rainfall days in December: 14.3 days

The month with the highest number of rainy days is March (16.5 days).
The month with the least rainy days is August (8.3 days).

Average daylight in December / Average sunshine in December - Cooranbong, Australia
Average daylight in December /
Average sunshine in December
Cooranbong, Australia
  • 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: 9h and 4min

The months with the most sunshine are November and December (Average sunshine: 9h and 42min).
The month with the least sunshine is June (Average sunshine: 5h and 42min).

Average sunshine days in December - Cooranbong, Australia
Average sunshine days in December
Cooranbong, Australia
  • Average sunshine days in December: 14.5 days

The month with the most sunshine days is August (20.3 days).
The month with the least sunshine days is February (11.4 days).

Average UV index in December - Cooranbong, Australia
Average UV index in December
Cooranbong, Australia
  • Average UV index in December: 6

The months with the highest UV index are January, February, October, November and December (UV index 6).
The months with the lowest UV index are April, May, June, July, August and September (UV index 4).

Average cloud cover in December - Cooranbong, Australia
Average cloud cover in December
Cooranbong, Australia
  • Average cloud cover in December: 39

The months with the most cloud cover are February and March (Cloud cover 45).
The months with the least cloud cover are August and September (Cloud cover 28).

Average visibility in December - Cooranbong, Australia
Average visibility in December
Cooranbong, Australia
  • Average visibility in December: 9km

The months with the highest visibility are July, August, September and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, October and November (8km).

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