If you’re hoping to get lost in the rain on your romantic getaway, check out these details about year-round temperatures in Isla Suasi: The hottest months are usually November and October with an average temp of 50°F, while the coldest months are June and July with an average of 45°F. The rainiest months in Isla Suasi are February, January, December, and March, with each month seeing an average of 8 inches of rainfall.