Richardsons Mill, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Richardsons Mill is not widely recognized for travel and beach tourism. The best time to travel to Richardsons Mill, United States, is in late spring (May), when the average air temperature is around 70°F (21°C) and water temperature is approximately 65°F (18°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!