Merriwa is a city of approximately 5,300 people in Western Australia, Australia. Located in the Australian Western time zone at 31.7°S latitude.
In 2025, Merriwa averaged an annual temperature of 66°F, with hottest temperatures reaching 110°F in January and lowest around 37°F in July. The city received approximately 31 inches of precipitation during the year.
View historical weather for Merriwa · More cities in Western Australia