The best time to go to Lake Carnegie is during the cooler months, specifically from May to September.
This period avoids the intense heat of the Western Australian summer, making exploration and outdoor activities much more comfortable. The daytime temperatures are generally mild, and the nights are cool, which is ideal for camping or stargazing.
For travellers interested in experiencing the unique landscape without the discomfort of extreme heat, these months offer the most pleasant conditions. The lake, when it holds water, is at its most impressive after seasonal rain, typically occurring during these cooler months, though it's often a dry salt pan.