Ar Rumays, Oman offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Ar Rumays, Al Batinah, Oman, is known for its beautiful beaches and traditional Omani coastal scenery. The best time to travel to Ar Rumays, Oman, is between November and March, with average air temperatures around 25°C (77°F) and water temperatures near 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!