December weather forecast
Harvey, Australia

December

Weather in December

The first month of the summer, December, is a moderately hot month in Harvey, Australia, with an average temperature varying between 24.7°C (76.5°F) and 15.6°C (60.1°F).

Temperature

Harvey, Australia, marks the onset of December with an average high-temperature of a moderately hot 24.7°C (76.5°F), a subtle shift from November's 22.3°C (72.1°F). December nights in Harvey experience a consistent temperature drop to a mild 15.6°C (60.1°F).

Humidity

In Harvey, the average relative humidity in December is 65%.

Rainfall

In December, the rain falls for 5.7 days. Throughout December, 13mm (0.51") of precipitation is accumulated. In Harvey, during the entire year, the rain falls for 130.6 days and collects up to 479mm (18.86") 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 December, sunrise is at 5:00 am and sunset at 7:10 pm. On the last day of the month, sunrise is at 5:10 am and sunset at 7:28 pm AWST.

Sunshine

In Harvey, the average sunshine in December is 11.2h.

UV index

February and December, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: In December, the average maximum UV index of 6 translates into the following recommendations:
Ward off overexposure. Defence against solar harm is crucial. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.

Frequently asked questions

What is the usual temperature for Harvey in December?
The high-temperature during December is 24.7°C (76.5°F) and the low-temperature is 15.6°C (60.1°F). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines air temperature and relative humidity, in February is appraised at 28°C (82.4°F).
What is the average humidity in December?
The average relative humidity in December is 65%.
How much does it rain in December?
In Harvey, in December, it is raining for 5.7 days, with typically 13mm (0.51") of accumulated precipitation.
When are the longest days?
The month with the longest days is December, with an average of 14h and 18min of daylight.
How many hours of daylight does Harvey have in December?
The average day length in December is 14h and 17min.
When are sunrise and sunset in December?
On the first day of December, sunrise is at 5:00 am and sunset at 7:10 pm. On the last day of the month, sunrise is at 5:10 am and sunset at 7:28 pm AWST.
How many hours of sunshine does Harvey have in December?
In Harvey, the average sunshine duration in December is 11.2h.
When is the highest UV index?
The months with the highest UV index in Harvey are February and December, with an average maximum UV index of 6.
What is the UV index intensity in December?
In Harvey, the average daily maximum UV index in December is 6. A UV Index estimate of 6 to 7 represents a high health risk 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
Harvey, Australia
  • Average high temperature in December: 24.7°C

The warmest month (with the highest average high temperature) is February (27°C).
The month with the lowest average high temperature is July (16.2°C).

  • Average low temperature in December: 15.6°C

The month with the highest average low temperature is February (17.6°C).
The coldest months (with the lowest average low temperature) are August and September (10.8°C).

Average pressure in December
Harvey, Australia
  • Average pressure in December: 1013.9mbar

The month with the highest atmospheric pressure is July (1019.8mbar).
The month with the lowest atmospheric pressure is January (1012.9mbar).

Average wind speed in December
Harvey, Australia
  • Average wind speed in December: 17.5km/h

The windiest month (with the highest average wind speed) is January (17.6km/h).
The calmest month (with the lowest average wind speed) is April (14.6km/h).

Average humidity in December
Harvey, Australia
  • Average humidity in December: 65%

The months with the highest relative humidity are July and August (77%).
The month with the lowest relative humidity is January (63%).

Average rainfall in December
Harvey, Australia
  • Average rainfall in December: 13mm

The wettest month (with the highest rainfall) is July (90mm).
The driest month (with the least rainfall) is January (11mm).

Average rainfall days in December
Harvey, Australia
  • Average rainfall days in December: 5.7 days

The month with the highest number of rainy days is July (18.7 days).
The month with the least rainy days is February (4.2 days).

Average daylight in December /
Average sunshine in December
Harvey, 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: 11h and 1min

The month with the most sunshine is January (Average sunshine: 11h and 24min).
The months with the least sunshine are July and August (Average sunshine: 5h and 36min).

Average sunshine days in December
Harvey, Australia
  • Average sunshine days in December: 22.8 days

The month with the most sunshine days is January (24.4 days).
The month with the least sunshine days is August (8.8 days).

Average UV index in December
Harvey, Australia
  • Average UV index in December: 6

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

Average cloud cover in December
Harvey, Australia
  • Average cloud cover in December: 18

The month with the most cloud cover is July (Cloud cover 42).
The month with the least cloud cover is January (Cloud cover 15).

Average visibility in December
Harvey, 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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