Hay Asim, Oman offers 1 beach perfect for sunbathing, surfing, swimming, and more. Hay Asim, Al Batinah, Oman, is known for its proximity to the historic Al Hazm Castle. The best time to travel to Hay Asim, Oman, is between November and March, when the average air temperature is around 25°C (77°F) and the water temperature is approximately 24°C (75°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!