Port Hedland has a hot arid climate (Köppen "BWh") although subject to the influence of tropical cyclones. Port Hedland is very warm to sweltering all year round, with mean maximum temperatures of in January and in July. Maximum temperatures in summer are usually moderated by a warm but humid sea breeze. Port Hedland is very sunny, averaging over 10 hours of sunshine per day annually and being in the sunniest region of Australia, receiving around 218.9 clear days annually. Dewpoint in the warmer months typically ranges from .