March in Kalgoorlie-Boulder is the rainiest month of the year. In March, the weather in Kalgoorlie-Boulder is typically warm. Average daily high temperature in March is about 26 degrees above zero. On average, Kalgoorlie-Boulder has 19 sunny, 10 partly cloudy, and 2 rainy days in March. The rains are usually light. March as well as April, October, and November is considered the most comfortable time to visit Kalgoorlie-Boulder.