Aguachil, Mexico offers 1 beach perfect for sunbathing, surfing, swimming, and more. Aguachil, Oaxaca, Mexico, is known for its vibrant cultural festivals and traditional crafts. The best time to travel to Aguachil, Mexico, is between November and April, when the average air temperature is around 75°F (24°C) and the water temperature is approximately 78°F (26°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!