Na Phaya, Thailand offers 1 beach perfect for sunbathing, surfing, swimming, and more. Na Phaya, Chumphon, Thailand, is known for its stunning Na Phaya Hill scenic viewpoint offering panoramic views of the Gulf of Thailand. The best time to travel to Na Phaya, Thailand, is from November to February, when the average air temperature is around 25-30°C (77-86°F) and the water temperature is approximately 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!