If you’re hoping to get lost in the rain on your romantic getaway, check out these details about year-round temperatures in Pahala Maragahawewa: The hottest months are usually April and March with an average temp of 82°F, while the coldest months are January and February with an average of 78°F. The rainiest months in Pahala Maragahawewa are November, October, December, and April, with each month seeing an average of 9 inches of rainfall.