Sydney weather in December 2021

Get the latest coronavirus (COVID-19) updates for Australia with current travel advice, statistics and online resources.

  • 26°C maximum daytime temperature in December in Sydney26
    26°C max day temperature
  • 8 hours of sunshine per day
  • 10 days with some rainfall in December in Sydney10
    10 days with some rainfall
  • 18°C minimum night-time temperature in December in Sydney18
    18°C min night temperature
  • 14 hours of daylight per day in December in Sydney14
    14 hours of daylight per day
  • Low heat & humidity in December in SydneyL
    Low heat & humidity
  • 86 mm monthly rainfall in December in Sydney86
    86 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in December in Sydney11
    11+ (Extreme) UV index
  • 21°C sea temperature in December in Sydney21
    21°C sea temperature

Recommended for New South Wales

  • Top deals & discounts
  • Sydney weather overview
  • Sydney climate averages by month
  • More destinations
  • Best time to go to Sydney
  • Sydney 5-day weather forecast

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

The December weather guide for Sydney, New South Wales shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

  • Check out the low fares on flights to Australia
  • Finnair flights connect in Helsinki Airport, Finland
  • Browse lowest fares available

How hot is it in Sydney in December?

Daytime temperatures usually reach 26°C in Sydney in December with low heat and humidity, falling to 18°C at night.

How sunny is it in Sydney in December?

There are normally 8 hours of bright sunshine each day in Sydney in December - that's 54% of daylight hours.

How warm is the sea around Sydney in December?

The average sea temperature around Sydney in December is 21°C.

Does it rain in Sydney in December?

There are usually 10 days with some rain in Sydney in December and the average monthly rainfall is 86mm.

Sydney sunrise & sunset times for December 2021

Browse the sunrise & sunset times for Sydney in December 2021. Select a month to view Sydney sunrise & sunset times for the next twelve months.


Date Sunrise times Sunset times
Wednesday, 1st December 2021 05:37 19:51
Thursday, 16th December 2021 05:39 20:03
Friday, 31st December 2021 05:47 20:09
  • Save on campervans for Australia with top deals & discounts
  • Book last minute offers, early bird deals & promotional sales
  • Locations include Brisbane, Cairns, Melbourne & Sydney

Metric (°C / mm)  |  Imperial (°F / inches)

Back to top

Discover more about Sydney

Where is hot in New South Wales in December for 2021/2022?

Below are average maximum temperatures at popular destinations in New South Wales in December. Select a destination to see more weather parameters.

More destinations & map >>

Related posts

Popular travel offers

Top ^

*affiliate links: find out how we are funded and why this helps us remain free to use.