Visiting local bars in Ranau is more fun in good weather. These rainfall averages and temperatures can help you decide the best time for bar hopping. The hottest months are usually April and May with an average temp of 72°F, while the coldest months are July and June with an average of 72°F. The rainiest months in Ranau are May, November, June, and January, with each month seeing an average of 20 inches of rainfall.