May in Lord Howe Island is the cloudiest month of the year. In May, the weather in Lord Howe Island is typically warm. Average daily high temperature in May is about 20 degrees above zero. On average, Lord Howe Island has 14 rainy, 9 partly cloudy, 5 sunny, and 3 cloudy days in May. The rains are usually heavy. May as well as June, July, and August is considered the most uncomfortable time to visit Lord Howe Island.