You might spend a lot of your vacation inside, but if you're planning to venture beyond the casino, looking at local weather trends is a good idea. The hottest months are usually April and May with an average temp of 81°F, while the coldest months are November and December with an average of 80°F. The rainiest months in Auki are March, January, February, and December, with each month seeing an average of 19 inches of rainfall.