December weather forecast
Derriwong, Australia

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Weather in December

The first month of the summer, December, is a hot month in Derriwong, Australia, with an average temperature ranging between max 30.7°C (87.3°F) and min 18.5°C (65.3°F).

Temperature

The onset of December brings with it an average high-temperature of a hot 30.7°C (87.3°F), showing a negligible variation from the month before. Derriwong undergoes a major shift from daytime highs, averaging an enjoyable 18.5°C (65.3°F) during the night in December.

Heat index

December's heat index is estimated at a tropical 31°C (87.8°F). If exposure and activity are sustained, they might cause a feeling of weariness, resulting in heat cramps.
Factoring in the heat index, values are geared towards shaded areas with light breezes. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'real feel' or 'felt air temperature', reflects the feeling of heat when considering both air temperature and humidity. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.

Humidity

The average relative humidity in December in Derriwong, Australia, is 41%.

Rainfall

In Derriwong, in December, it is raining for 6.6 days, with typically 24mm (0.94") of accumulated precipitation. Throughout the year, there are 86.7 rainfall days, and 292mm (11.5") of precipitation is accumulated.

Snowfall

January through July, September through December are months without snowfall.

Daylight

The month with the longest days is December, with an average of 14h and 18min of daylight.
On the first day of December, sunrise is at 5:54 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 6:04 am and sunset at 8:22 pm AEDT.

Sunshine

The month with the most sunshine in Derriwong is December, with an average of 10.7h of sunshine.

UV index

January and December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the average person.
Note: The maximum daily UV index, 7 in December, converts into the following recommendations:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Opt for tightly woven and loose clothing to enhance protection from the Sun.
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Frequently asked questions

How hot does it get in Derriwong in December?

The high-temperature, in December, in Derriwong, records 30.7°C (87.3°F), while the low-temperature is 18.5°C (65.3°F). In December, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, is estimated at 31°C (87.8°F).

What is the average humidity in December in Derriwong?

The average relative humidity in December in Derriwong is 41%.

How many days does it rain in December in Derriwong?

In December, the rain falls for 6.6 days. Throughout December, 24mm (0.94") of precipitation is accumulated.

When it does not snow in Derriwong?

January through July, September through December are months without snowfall.

When are the longest days in Derriwong?

With an average of 14h and 18min of daylight, December has the longest days of the year in Derriwong, Australia.

How many hours of daylight does Derriwong have in December?

The average day length in December in Derriwong, Australia, is 14h and 18min.

What time are sunrise and sunset in December in Derriwong?

On the first day of December, sunrise is at 5:54 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 6:04 am and sunset at 8:22 pm AEDT.

What month has the most sunshine in Derriwong?

December has the most sunshine of the year in Derriwong, Australia, with an average of 10.7h of sunshine.

How many hours of sunshine does Derriwong have in December?

In December, the average sunshine duration in Derriwong, Australia, is 10.7h.

What are the months with the highest UV index in Derriwong?

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

What is the UV index reading in December in Derriwong?

In December, the average daily maximum UV index is 7. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover

Average temperature in December
Derriwong, Australia

Average temperature in December - Derriwong, Australia
  • Average high temperature in December: 30.7°C

The warmest month (with the highest average high temperature) is January (33.7°C).
The month with the lowest average high temperature is July (13.5°C).

  • Average low temperature in December: 18.5°C

The month with the highest average low temperature is January (21.4°C).
The coldest month (with the lowest average low temperature) is August (4.6°C).

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Average pressure in December
Derriwong, Australia

Average pressure in December - Derriwong, Australia
  • Average pressure in December: 1011.6mbar

The month with the highest atmospheric pressure is June (1022.3mbar).
The month with the lowest atmospheric pressure is January (1010.5mbar).

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Average wind speed in December
Derriwong, Australia

Average wind speed in December - Derriwong, Australia
  • Average wind speed in December: 13.5km/h

The windiest month (with the highest average wind speed) is September (13.8km/h).
The calmest month (with the lowest average wind speed) is April (11.8km/h).

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Average humidity in December
Derriwong, Australia

Average humidity in December - Derriwong, Australia
  • Average humidity in December: 41%

The month with the highest relative humidity is June (79%).
The month with the lowest relative humidity is January (39%).

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Average rainfall in December
Derriwong, Australia

Average rainfall in December - Derriwong, Australia
  • Average rainfall in December: 24mm

The wettest month (with the highest rainfall) is November (42mm).
The driest month (with the least rainfall) is September (14mm).

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Average rainfall days in December
Derriwong, Australia

Average rainfall days in December - Derriwong, Australia
  • Average rainfall days in December: 6.6 days

The month with the highest number of rainy days is March (8.4 days).
The months with the least rainy days are May and September (6.1 days).

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Average snowfall days in December
Derriwong, Australia

Average snowfall days in December - Derriwong, Australia
  • Average snowfall days in December: 0 days

The month with the highest number of snowfall days is August (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, September, October, November and December (0 days).

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Average daylight in December /
Average sunshine in December
Derriwong, Australia

Average daylight in December / Average sunshine in December - Derriwong, 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: 10h and 4min

The month with the most sunshine is December (Average sunshine: 10h and 42min).
The month with the least sunshine is June (Average sunshine: 7h and 42min).

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Average sunshine days in December
Derriwong, Australia

Average sunshine days in December - Derriwong, Australia
  • Average sunshine days in December: 23.2 days

The month with the most sunshine days is May (23.4 days).
The month with the least sunshine days is June (19.6 days).

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Average UV index in December
Derriwong, Australia

Average UV index in December - Derriwong, Australia
  • Average UV index in December: 7

The months with the highest UV index are January and December (UV index 7).
The months with the lowest UV index are June and August (UV index 3).

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Average cloud cover in December
Derriwong, Australia

Average cloud cover in December - Derriwong, Australia
  • Average cloud cover in December: 17

The month with the most cloud cover is June (Cloud cover 34).
The month with the least cloud cover is December (Cloud cover 17).

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Average visibility in December
Derriwong, Australia

Average visibility in December - Derriwong, Australia
  • Average visibility in December: 10km

The months with the highest visibility are January, February, March, April, May, October, November and December (10km).
The months with the lowest visibility are June, July, August and September (9km).

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Derriwong, Australia

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