With a population of around 6,200, Helensburgh sits in New South Wales, Australia. The city operates in the Australian Eastern time zone.
Recent weather here gives a sense of typical conditions: in 2025, Helensburgh recorded a mean annual temperature of 63°F, ranging from 43°F lows in July to 100°F highs in December, with about 53 inches of precipitation across the year.
View historical weather for Helensburgh · More cities in New South Wales