Monastir, Tunisia offers 11 beaches perfect for sunbathing, surfing, swimming, and more. Monastir is known for the Ribat of Monastir, a historic Islamic fortress and filming location for several movies. The best time to travel to Monastir, Tunisia, is from May to October, with average air temperatures ranging from 20°C to 30°C and water temperatures between 20°C and 26°C. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!