Portobello, New Zealand offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Portobello, Otago, New Zealand, is known for the Otago Peninsula and the Royal Albatross Centre. The best time to travel to Portobello, New Zealand, is during the summer months of 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!