Bimma, Oman offers 6 beaches perfect for sunbathing, surfing, swimming, and more. Bimma, Muscat Governorate, Oman, is known for the Bimmah Sinkhole, a stunning natural limestone crater filled with turquoise water. The best time to travel to Bimma, 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!