December weather forecast
Chatswood, Australia

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Weather in December

The first month of the summer, December, is also a moderately hot month in Chatswood, Australia, with an average temperature fluctuating between 17.9°C (64.2°F) and 25.8°C (78.4°F).

Temperature

Chatswood, Australia, notes an average high-temperature of a still moderately hot 25.8°C (78.4°F) in December, hardly diverging from November. Chatswood in December anticipates an average nighttime temperature of 17.9°C (64.2°F).

Humidity

In Chatswood, the average relative humidity in December is 71%.

Rainfall

In December, in Chatswood, the rain falls for 14.8 days. Throughout December, 43mm (1.69") of precipitation is accumulated. In Chatswood, Australia, during the entire year, the rain falls for 169 days and collects up to 647mm (25.47") of precipitation.

Daylight

December has the longest days of the year, with an average of 14h and 24min of daylight.
On the first day of the month, sunrise is at 5:37 am and sunset at 7:51 pm. On the last day of December, in Chatswood, sunrise is at 5:47 am and sunset at 8:09 pm AEDT.

Sunshine

In December, the average sunshine is 9.7h.

UV index

January, February, November and December, with an average maximum UV index of 6, are months with the highest UV index in Chatswood. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: The average daily UV index of 6 in December transforms into the following instructions:
Take precautions against overexposure. Protection against sun damage is needed. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
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Frequently asked questions

What are the temperatures in Chatswood in December?

In December, the average high-temperature and low-temperature in Chatswood, Australia, are 25.8°C (78.4°F) and 17.9°C (64.2°F) respectively. In January, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which factors the actual air temperature with the relative humidity, is appraised at 30°C (86°F).

What is the average humidity in December in Chatswood?

In December, the average relative humidity in Chatswood is 71%.

How much does it rain in Chatswood in December?

In Chatswood, Australia, in December, it is raining for 14.8 days, with typically 43mm (1.69") of accumulated precipitation.

When are the longest days in Chatswood?

With an average of 14h and 24min of daylight, December has the longest days of the year.

How many hours of daylight does Chatswood have in December?

In December, the average day length in Chatswood, Australia, is 14h and 22min.

When are sunrise and sunset in December in Chatswood?

On the first day of December in Chatswood, Australia, sunrise is at 5:37 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 5:47 am and sunset at 8:09 pm AEDT.

How long on average sun shines in December in Chatswood?

In December, the average sunshine duration is 9.7h.

What is the month with the highest UV index in Chatswood?

The months with the highest UV index are January, February, November and December, with an average maximum UV index of 6.

What is the UV index reading in December in Chatswood?

The average daily maximum UV index in December in Chatswood, Australia, is 6. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to UV radiation.

Average temperature in December
Chatswood, Australia

Average temperature in December - Chatswood, Australia
  • Average high temperature in December: 25.8°C

The warmest month (with the highest average high temperature) is January (27.3°C).
The month with the lowest average high temperature is July (16.6°C).

  • Average low temperature in December: 17.9°C

The month with the highest average low temperature is January (19.8°C).
The coldest month (with the lowest average low temperature) is July (9.7°C).

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Average pressure in December
Chatswood, Australia

Average pressure in December - Chatswood, Australia
  • Average pressure in December: 1013.4mbar

The month with the highest atmospheric pressure is June (1020.9mbar).
The month with the lowest atmospheric pressure is January (1012.9mbar).

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Average wind speed in December
Chatswood, Australia

Average wind speed in December - Chatswood, Australia
  • Average wind speed in December: 13.9km/h

The windiest months (with the highest average wind speed) are January and August (14km/h).
The calmest month (with the lowest average wind speed) is April (12.2km/h).

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Average humidity in December
Chatswood, Australia

Average humidity in December - Chatswood, Australia
  • Average humidity in December: 71%

The month with the highest relative humidity is February (75%).
The months with the lowest relative humidity are August and September (66%).

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Average rainfall in December
Chatswood, Australia

Average rainfall in December - Chatswood, Australia
  • Average rainfall in December: 43mm

The wettest month (with the highest rainfall) is February (92mm).
The driest month (with the least rainfall) is September (35mm).

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Average rainfall days in December
Chatswood, Australia

Average rainfall days in December - Chatswood, Australia
  • Average rainfall days in December: 14.8 days

The month with the highest number of rainy days is March (18.8 days).
The month with the least rainy days is August (10.1 days).

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

Average daylight in December / Average sunshine in December - Chatswood, Australia
  • Average daylight in December: 14h and 2min

The month with the longest days is December (Average daylight: 14h and 24min).
The month with the shortest days is June (Average daylight: 9h and 54min).

  • Average sunshine in December: 9h and 4min

The month with the most sunshine is November (Average sunshine: 9h and 48min).
The month with the least sunshine is June (Average sunshine: 5h and 54min).

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Average sunshine days in December
Chatswood, Australia

Average sunshine days in December - Chatswood, Australia
  • Average sunshine days in December: 12.6 days

The month with the most sunshine days is August (17.9 days).
The month with the least sunshine days is March (8.8 days).

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Average UV index in December
Chatswood, Australia

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

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

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Average cloud cover in December
Chatswood, Australia

Average cloud cover in December - Chatswood, Australia
  • Average cloud cover in December: 37

The month with the most cloud cover is February (Cloud cover 42).
The month with the least cloud cover is August (Cloud cover 24).

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Average visibility in December
Chatswood, Australia

Average visibility in December - Chatswood, 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).

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Chatswood, Australia

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