Ban Nai Plao, Thailand offers 1 beach perfect for sunbathing, surfing, swimming, and more. Ban Nai Plao, Nakhon Si Thammarat, Thailand, is known for its proximity to the Khao Luang National Park and the Wat Phra Mahathat Woramahawihan. The best time to travel to Ban Nai Plao, Thailand, is from December to February, when the average air temperature is around 27°C (81°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!