Visiting local bars in Vaitupu is better when you know what the weather holds. These rainfall averages and temperatures can help you choose the best time for bar hopping. The hottest months are usually April and May with an average temp of 83°F, while the coldest months are August and February with an average of 83°F. The rainiest months in Vaitupu are February, January, December, and March, with each month seeing an average of 16 inches of rainfall.