If you’re hoping to get lost in the rain on your romantic getaway, check out these details about year-round temperatures in Chukai: The hottest months are usually May and April with an average temp of 79°F, while the coldest months are February and January with an average of 76°F. The rainiest months in Chukai are November, December, October, and September, with each month seeing an average of 16 inches of rainfall.