The World's Happiest And Saddest Countries. The United States is a nation in decline. Last year the land of the free and the home of the brave came in 10th place in the annual rankings of Worldâs Happiest Countries. This year the U.S.A. has slipped to 12th. This marks the first time in the six-year history of the Legatum Instituteâs Prosperity Index that America has not placed in the top 10.
Winter (June â August) Sydneyâs coolest months are June to August when average temperatures drop between 8.8 - 17Â°C (47.8 - 62.6Â°F). Sydneyâs rainfall is generally highest in June, with an average of 132 mm (5.2â), while July is the coolest month when average daytime temperatures reach just 13Â°C (55Â°F).
Weather in Sydney in June 2018. Expect 18Â°C daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Sydney in June. Check more long-term weather averages for Sydney in June before you book your next holiday to New South Wales in 2018. 1  Sydney weather overview. 2  Sydney monthly weather. 3  Sydney 5-day forecast. 4  New South Wales holidays. 5  New South Wales map. 6  More destinations. 7  Back to New South Wales.