Zeelandia, Guyana offers 1 beach perfect for sunbathing, surfing, swimming, and more. Zeelandia, Essequibo Islands West Demerara, Guyana, is known for Fort Zeelandia, a historic Dutch fortification. The best time to travel to Zeelandia, Guyana, is from late August to early November, with average air temperatures around 27°C (81°F) and water temperatures near 28°C (82°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!