Planning for the weather is a good way to make your trip to Mariscos relaxing and enjoyable, especially when you’re splurging. The hottest months are usually April and May with an average temp of 80°F, while the coldest months are January and February with an average of 74°F. The rainiest months in Mariscos are November, July, October, and August, with each month seeing an average of 15 inches of rainfall.