Gouyave, Grenada offers 1 beach perfect for sunbathing, surfing, swimming, and more. Gouyave, Saint John, Grenada, is known for the Gouyave Fish Friday festival. The best time to visit Gouyave, Grenada, is from December to April, with average air temperatures around 27°C (81°F) and water temperatures near 28°C (82°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!