Pittsburg, United States offers 4 beaches perfect for sunbathing, surfing, swimming, and more. Pittsburg, New Hampshire, United States, is known for the Connecticut Lakes and the Great North Woods. The best time to travel to Pittsburgh is from late spring to early fall, with average air temperatures ranging from 60°F to 80°F and water temperatures in local rivers around 60°F to 70°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!