With a population of around 12,900, Southern River sits in Western Australia, Australia. The city operates in the Australian Western time zone.
In 2025, Southern River recorded an average annual temperature of 66°F. The hottest temperatures reached 111°F in January; the coolest were 38°F in July. Total precipitation for the year was 33 inches, with the wettest month being August.
View current conditions and forecast for Southern River · More cities in Western Australia