December weather forecast
Sandy Bay, Australia

December

Weather in December

December, the first month of the summer in Sandy Bay, is still a refreshing month, with an average temperature ranging between max 18.5°C (65.3°F) and min 9.6°C (49.3°F).

Temperature

The arrival of December coincides with an average high-temperature of a still comfortable 18.5°C (65.3°F), indicating a minimal shift from November's 17°C (62.6°F). In Sandy Bay, December nights cool down to an average of 9.6°C (49.3°F).

Humidity

The months with the lowest humidity in Sandy Bay are January and December, with an average relative humidity of 73%.

Rainfall

In Sandy Bay, in December, during 13.7 rainfall days, 35mm (1.38") of precipitation is typically accumulated. In Sandy Bay, during the entire year, the rain falls for 163.7 days and collects up to 356mm (14.02") of precipitation.

Snowfall

In Sandy Bay, snow does not fall in January through July, September through December.

Sea temperature

In Sandy Bay, in December, the average water temperature is 15.6°C (60.1°F).
Note: Most people do not find pleasure in swimming when the water temperature is 15.6°C (60.1°F). Breathing becomes increasingly difficult to manage as the water temperature drops from 21°C (69.8°F) to 15°C (59°F).

Daylight

December has the longest days of the year, with an average of 15h and 18min of daylight.
On the first day of December, sunrise is at 5:26 am and sunset at 8:32 pm. On the last day of the month, sunrise is at 5:34 am and sunset at 8:52 pm AEDT.

Sunshine

The month with the most sunshine is December, with an average of 9.2h of sunshine.

UV index

With an average maximum UV index of 5, December is the month with the highest UV index. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A maximum high UV index of 5 in December translates into the following recommendations:
Heed the precautions - It is counselled to guard against solar damage. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

Frequently asked questions

What is the average December temperature in Sandy Bay?
The average high-temperature and low-temperature in Sandy Bay, Australia, during December are 18.5°C (65.3°F) and 9.6°C (49.3°F) respectively.
What are the least humid months in Sandy Bay?
The months with the lowest humidity in Sandy Bay are January and December, with an average relative humidity of 73%.
What is the average humidity in December in Sandy Bay?
The average relative humidity in December in Sandy Bay, Australia, is 73%.
How many days does it rain in December in Sandy Bay?
In Sandy Bay, in December, it is raining for 13.7 days, with typically 35mm (1.38") of accumulated precipitation.
When it does not snow in Sandy Bay?
In Sandy Bay, snow does not fall in January through July, September through December.
What is the sea water temperature in December in Sandy Bay?
In Sandy Bay, Australia, the average seawater temperature in December is 15.6°C (60.1°F). For most, swimming in 15.6°C (60.1°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).
When are the longest days in Sandy Bay?
The month with the longest days in Sandy Bay, Australia, is December, with an average of 15h and 18min of daylight.
What is the average length of the day in December in Sandy Bay?
In Sandy Bay, Australia, the average day length in December is 15h and 17min.
When is the sunrise / sunset in December in Sandy Bay?
On the first day of December in Sandy Bay, sunrise is at 5:26 am and sunset at 8:32 pm. On the last day of the month, sunrise is at 5:34 am and sunset at 8:52 pm AEDT.
What month has the most sunshine in Sandy Bay?
December has the most sunshine of the year, with an average of 9.2h of sunshine.
How long on average sun shines in December in Sandy Bay?
In December, the average sunshine duration in Sandy Bay, Australia, is 9.2h.
When is the highest UV index in Sandy Bay?
The month with the highest UV index in Sandy Bay, Australia, is December, with an average maximum UV index of 5.
What is the UV index intensity in December in Sandy Bay?
The average daily maximum UV index in December in Sandy Bay, Australia, is 5. A UV Index estimate of 3 to 5 represents a moderate vulnerability from exposure to Sun's UV rays.
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 snowfall days
Average sea temperature
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in December
Sandy Bay, Australia
  • Average high temperature in December: 18.5°C

The warmest month (with the highest average high temperature) is January (20.1°C).
The month with the lowest average high temperature is July (10.9°C).

  • Average low temperature in December: 9.6°C

The month with the highest average low temperature is January (11.1°C).
The coldest month (with the lowest average low temperature) is August (4.8°C).

Average pressure in December
Sandy Bay, Australia
  • Average pressure in December: 1010.7mbar

The month with the highest atmospheric pressure is June (1017.8mbar).
The month with the lowest atmospheric pressure is December (1010.7mbar).

Average wind speed in December
Sandy Bay, Australia
  • Average wind speed in December: 12.6km/h

The windiest month (with the highest average wind speed) is September (14.5km/h).
The calmest month (with the lowest average wind speed) is March (11.4km/h).

Average humidity in December
Sandy Bay, Australia
  • Average humidity in December: 73%

The month with the highest relative humidity is June (82%).
The months with the lowest relative humidity are January and December (73%).

Average rainfall in December
Sandy Bay, Australia
  • Average rainfall in December: 35mm

The wettest months (with the highest rainfall) are August and November (38mm).
The driest months (with the least rainfall) are January and October (23mm).

Average rainfall days in December
Sandy Bay, Australia
  • Average rainfall days in December: 13.7 days

The month with the highest number of rainy days is November (16 days).
The month with the least rainy days is June (11.4 days).

Average snowfall days in December
Sandy Bay, 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).

Average sea temperature in December
Sandy Bay, Australia
  • Average sea temperature in December: 15.6°C

The best month for swimming (with the highest average sea temperature) is February (16.5°C).
The coldest month (with the lowest average sea temperature) is September (12.6°C).

Average daylight in December /
Average sunshine in December
Sandy Bay, Australia
  • Average daylight in December: 15h and 2min

The month with the longest days is December (Average daylight: 15h and 18min).
The month with the shortest days is June (Average daylight: 9h and 6min).

  • Average sunshine in December: 9h and 1min

The month with the most sunshine is December (Average sunshine: 9h and 12min).
The month with the least sunshine is June (Average sunshine: 5h and 18min).

Average sunshine days in December
Sandy Bay, Australia
  • Average sunshine days in December: 11.9 days

The month with the most sunshine days is June (15.3 days).
The month with the least sunshine days is November (9.5 days).

Average UV index in December
Sandy Bay, Australia
  • Average UV index in December: 5

The month with the highest UV index is December (UV index 5).
The months with the lowest UV index are May, June, July, August and September (UV index 3).

Average cloud cover in December
Sandy Bay, Australia
  • Average cloud cover in December: 42

The month with the most cloud cover is November (Cloud cover 47).
The month with the least cloud cover is January (Cloud cover 39).

Average visibility in December
Sandy Bay, Australia
  • Average visibility in December: 9km

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

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