Windsor Castle, Jamaica offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Portland is known for its stunning beaches and lush natural beauty, making it a popular destination for travel and beach tourism. The best time to travel to Windsor Castle, 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!