About Mosman, New South Wales's Climate & Weather History

Mosman is a city of approximately 27,800 people in New South Wales, Australia. Located in the Australian Eastern time zone at 33.8°S latitude.

In 2025, Mosman recorded an average annual temperature of 65°F. The hottest temperatures reached 102°F in December; the coolest were 39°F in June. Total precipitation for the year was 50 inches, with the wettest month being August.