Tresta, United Kingdom offers 1 beach perfect for sunbathing, surfing, swimming, and more. Ika, Primorje Gorski Kotar, Croatia, is known for its proximity to the Opatija Riviera and the scenic beauty of the Kvarner Bay. The best time to travel to Tresta, United Kingdom, is during the summer months of June to August, when the average air temperature is around 12-15°C (54-59°F) and the water temperature is approximately 10-12°C (50-54°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!