Galena, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Galena, Washington, United States, is known for its proximity to the North Cascades National Park. The best time to visit Galena, United States, is in the fall (September to November) when the average air temperature is around 50-70°F, and there is no significant water temperature to consider as it is not a coastal destination. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!