Jenner, United States offers 13 beaches perfect for sunbathing, surfing, swimming, and more. Jenner is known for Goat Rock Beach and the Russian River. The best time to travel to Jenner, United States, is from June to September, with average air temperatures around 60-70°F and water temperatures near 50-55°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!