Alnmouth, United Kingdom offers 1 beach perfect for sunbathing, surfing, swimming, and more. Alnmouth is known for its picturesque coastal scenery and the historic Alnmouth Golf Club, one of the oldest golf courses in England. The best time to travel to Alnmouth, United Kingdom, is from June to August, with average air temperatures around 15-20°C (59-68°F) and water temperatures around 13-16°C (55-61°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!