Picton, New Zealand offers 1 beach perfect for sunbathing, surfing, swimming, and more. Picton is known for the Queen Charlotte Track and the Marlborough Sounds. The best time to travel to Picton, New Zealand, is from December to February, when the average air temperature is around 20°C (68°F) and the water temperature is approximately 17°C (63°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!