Dededo, Guam offers 5 beaches perfect for sunbathing, surfing, swimming, and more. Dededo, Guam, is known for Two Lovers Point, Micronesia Mall, and the Dededo Flea Market. The best time to travel to Dededo, Guam, is from January to May, 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!