When is the best time to visit Karratha?

The best time to visit Karratha is in winter, from April until October. This is a safe bet for outdoor activities like bushwalking and fishing. Swimmers can still go for a splash as well, since temperatures are warm year-round. A winter visit, specifically between July and September, also brings the opportunity to view humpback whales migrating to spawning grounds. On top of that, the swimming holes in Millstream Chichester National Park are fresh and free from algae blooms, which often occur in the dry summer months.