Sumner, New Zealand offers 1 beach perfect for sunbathing, surfing, swimming, and more. Sumner is known for its beautiful Sumner Beach and the iconic Cave Rock. The best time to travel to Sumner, 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!
