Saint Heliers, New Zealand offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Saint Heliers is known for its picturesque beaches and charming seaside atmosphere. The best time to visit Saint Heliers, 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 20°C (68°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!