Wainui Bay, New Zealand offers 6 beaches perfect for sunbathing, surfing, swimming, and more. Wainui Bay is known for its proximity to Abel Tasman National Park, offering stunning coastal scenery and outdoor activities. The best time to travel to Wainui Bay, New Zealand, is during the summer months of December to February, when the average air temperature is around 20-25°C (68-77°F) and the water temperature is approximately 18-20°C (64-68°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!