Visiting local bars in Tau Island is more fun when you know what the weather holds. These rainfall averages and temperatures can help you decide the best time for bar hopping. The hottest months are usually March and April with an average temp of 82°F, while the coldest months are August and July with an average of 80°F. The rainiest months in Tau Island are February, January, December, and November, with each month seeing an average of 13 inches of rainfall.