Progress Valley, New Zealand offers 1 beach perfect for sunbathing, surfing, swimming, and more. Progress Valley, Southland, New Zealand, is known for its stunning natural landscapes and outdoor recreational activities. The best time to travel to Progress Valley, New Zealand, is during the summer months of December to February, when the average air temperature is around 68°F (20°C) and the water temperature is approximately 64°F (18°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!