December weather forecastSandy 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.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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 18min
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 12min
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).
