Iter Boreale, Jamaica offers 1 beach perfect for sunbathing, surfing, swimming, and more. Iter Boreale, Saint Mary, Jamaica, is known for the James Bond Beach and the Firefly Estate. The best time to travel to Iter Boreale, Jamaica, is from November to mid-December, with average air temperatures around 80°F (27°C) and water temperatures near 82°F (28°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!