December weather forecastNorth Sydney, Australia
December weather for North Sydney, Australia: The first month of the summer, December, is still a warm month in North Sydney, Australia, with an average temperature varying between 17.9°C (64.2°F) and 25.8°C (78.4°F). In North Sydney, Australia, in December, it is raining for 14.8 days, with typically 43mm (1.69") of accumulated precipitation.
December
Weather in December
The first month of the summer, December, is still a warm month in North Sydney, Australia, with an average temperature varying between 17.9°C (64.2°F) and 25.8°C (78.4°F).Temperature
North Sydney records a slight change with December's average high-temperatures adjusting to a still warm 25.8°C (78.4°F) from November's 24.3°C (75.7°F). Nighttime temperatures in North Sydney consistently average an enjoyable 17.9°C (64.2°F) during December.Humidity
In December, the average relative humidity in North Sydney, Australia, is 71%.Rainfall
In North Sydney, Australia, in December, it is raining for 14.8 days, with typically 43mm (1.69") of accumulated precipitation. In North Sydney, during the entire year, the rain falls for 169 days and collects up to 647mm (25.47") of precipitation.Sea temperature
In North Sydney, Australia, the average seawater temperature in December is 21.9°C (71.4°F).Note: Most people find it challenging to enjoy swimming in water that is 21.9°C (71.4°F). As water temperature falls below 21°C (69.8°F), controlling breathing grows increasingly difficult.
Daylight
With an average of 14h and 24min of daylight, December has the longest days of the year in North Sydney.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, sunrise is at 5:47 am and sunset at 8:09 pm AEDT.
Sunshine
In North Sydney, the average sunshine in December 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. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: In December, the UV index of 6 transforms into the following advice:
Take precautions against overexposure. Protection against sun damage is needed. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Take caution! The UV rays from the Sun gain strength from sand and water reflections.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
North Sydney, 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).
Average pressure in December
North Sydney, 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).
Average wind speed in December
North Sydney, 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).
Average humidity in December
North Sydney, 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%).
Average rainfall in December
North Sydney, 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).
Average rainfall days in December
North Sydney, 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).
Average sea temperature in December
North Sydney, Australia
- Average sea temperature in December: 21.9°C
The best month for swimming (with the highest average sea temperature) is February (23.7°C).
The coldest month (with the lowest average sea temperature) is September (18.6°C).
Average daylight in December /
Average sunshine in December
North Sydney, Australia
- Average daylight in December: 14h and 24min
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 42min
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).
Average sunshine days in December
North Sydney, 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).
Average UV index in December
North Sydney, 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).
Average cloud cover in December
North Sydney, 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).
Average visibility in December
North Sydney, 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).
