Santiago Jamiltepec, Mexico offers 1 beach perfect for sunbathing, surfing, swimming, and more. Santiago Jamiltepec is known for its proximity to the stunning Lagunas de Chacahua National Park. The best time to travel to Santiago Jamiltepec, Mexico, is from November to April, with average air temperatures around 75°F (24°C) and water temperatures near 82°F (28°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!