December weather forecast
Glamorgan Vale, Australia

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Weather in December

The first month of the summer, December, is still a warm month in Glamorgan Vale, Australia, with an average temperature fluctuating between 18.4°C (65.1°F) and 28.9°C (84°F).

Temperature

Glamorgan Vale records an average high-temperature of a still warm 28.9°C (84°F) in December, closely mirroring the climate of the previous month. Throughout December, the temperature falls to an average low of 18.4°C (65.1°F).

Heat index

In December, the average heat index is evaluated at a hot 33°C (91.4°F). Exercise special caution, heat exhaustion and heat cramps are probable. Prolonged activity may induce heatstroke.
Factoring in the heat index, values are geared towards shaded areas with light breezes. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is an aggregate value of air's warmth and moisture to show the human-felt temperature. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.

Humidity

In Glamorgan Vale, Australia, the average relative humidity in December is 74%.

Rainfall

In December, in Glamorgan Vale, the rain falls for 16.6 days. Throughout December, 57mm (2.24") of precipitation is accumulated. In Glamorgan Vale, during the entire year, the rain falls for 155.1 days and collects up to 433mm (17.05") of precipitation.

Daylight

With an average of 13h and 48min of daylight, December has the longest days of the year.
On the first day of the month, sunrise is at 4:46 am and sunset at 6:30 pm. On the last day of December, sunrise is at 4:56 am and sunset at 6:48 pm AEST.

Sunshine

In Glamorgan Vale, the average sunshine in December is 9.6h.

UV index

January through March, November and December, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A daily high UV index of 6 in December leads to these guidelines:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Experience reduced UV exposure by about half when donning a wide-brim hat.
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Frequently asked questions

How hot does it get in Glamorgan Vale in December?

The high-temperature, in December, in Glamorgan Vale, is 28.9°C (84°F), while the low-temperature averages to 18.4°C (65.1°F). In December, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines air temperature and relative humidity, is evaluated at 33°C (91.4°F).

What is the average humidity in December in Glamorgan Vale?

The average relative humidity in December in Glamorgan Vale is 74%.

How many days does it rain in December in Glamorgan Vale?

In Glamorgan Vale, Australia, in December, it is raining for 16.6 days, with typically 57mm (2.24") of accumulated precipitation.

When are the longest days in Glamorgan Vale?

The month with the longest days in Glamorgan Vale, Australia, is December, with an average of 13h and 48min of daylight.

What is the average length of the day in December in Glamorgan Vale?

In December, the average day length in Glamorgan Vale, Australia, is 13h and 51min.

When are sunrise and sunset in December in Glamorgan Vale?

On the first day of December in Glamorgan Vale, Australia, sunrise is at 4:46 am and sunset at 6:30 pm. On the last day of the month, sunrise is at 4:56 am and sunset at 6:48 pm AEST.

How many hours of sunshine does Glamorgan Vale have in December?

In Glamorgan Vale, the average sunshine duration in December is 9.6h.

What are the months with the highest UV index in Glamorgan Vale?

January through March, November and 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 Glamorgan Vale?

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

Average temperature in December
Glamorgan Vale, Australia

Average temperature in December - Glamorgan Vale, Australia
  • Average high temperature in December: 28.9°C

The warmest month (with the highest average high temperature) is January (29.3°C).
The month with the lowest average high temperature is July (19.1°C).

  • Average low temperature in December: 18.4°C

The months with the highest average low temperature are January and February (19.5°C).
The coldest month (with the lowest average low temperature) is July (9.4°C).

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Average pressure in December
Glamorgan Vale, Australia

Average pressure in December - Glamorgan Vale, Australia
  • Average pressure in December: 1013.3mbar

The month with the highest atmospheric pressure is July (1020.8mbar).
The month with the lowest atmospheric pressure is January (1012.4mbar).

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Average wind speed in December
Glamorgan Vale, Australia

Average wind speed in December - Glamorgan Vale, Australia
  • Average wind speed in December: 10.2km/h

The windiest month (with the highest average wind speed) is February (11.3km/h).
The calmest month (with the lowest average wind speed) is May (9.5km/h).

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Average humidity in December
Glamorgan Vale, Australia

Average humidity in December - Glamorgan Vale, Australia
  • Average humidity in December: 74%

The month with the highest relative humidity is March (80%).
The month with the lowest relative humidity is September (69%).

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Average rainfall in December
Glamorgan Vale, Australia

Average rainfall in December - Glamorgan Vale, Australia
  • Average rainfall in December: 57mm

The wettest month (with the highest rainfall) is January (69mm).
The driest month (with the least rainfall) is July (12mm).

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Average rainfall days in December
Glamorgan Vale, Australia

Average rainfall days in December - Glamorgan Vale, Australia
  • Average rainfall days in December: 16.6 days

The month with the highest number of rainy days is March (19.4 days).
The month with the least rainy days is August (6.6 days).

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Average daylight in December /
Average sunshine in December
Glamorgan Vale, Australia

Average daylight in December / Average sunshine in December - Glamorgan Vale, Australia
  • Average daylight in December: 13h and 5min

The month with the longest days is December (Average daylight: 13h and 48min).
The month with the shortest days is June (Average daylight: 10h and 24min).

  • Average sunshine in December: 9h and 4min

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 24min).

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Average sunshine days in December
Glamorgan Vale, Australia

Average sunshine days in December - Glamorgan Vale, Australia
  • Average sunshine days in December: 11.3 days

The month with the most sunshine days is August (21.8 days).
The month with the least sunshine days is March (7.6 days).

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Average UV index in December
Glamorgan Vale, Australia

Average UV index in December - Glamorgan Vale, Australia
  • Average UV index in December: 6

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

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Average cloud cover in December
Glamorgan Vale, Australia

Average cloud cover in December - Glamorgan Vale, Australia
  • Average cloud cover in December: 41

The months with the most cloud cover are February and March (Cloud cover 45).
The month with the least cloud cover is August (Cloud cover 19).

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Average visibility in December
Glamorgan Vale, Australia

Average visibility in December - Glamorgan Vale, Australia
  • Average visibility in December: 9km

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

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Glamorgan Vale, Australia

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