Planning for the weather is a good way to make your trip to Boca del Cielo relaxing and enjoyable, especially when you're splurging. The hottest months are usually April and March with an average temp of 80°F, while the coldest months are January and February with an average of 76°F. The rainiest months in Boca del Cielo are June, September, August, and July, with each month seeing an average of 12 inches of rainfall.