Stranraer, United Kingdom offers 14 beaches perfect for sunbathing, surfing, swimming, and more. Stranraer is known for its proximity to the picturesque Loch Ryan and the historic Castle of St. John. The best time to travel to Stranraer, United Kingdom, is during the summer months of June to August, when the average air temperature is around 15-18°C (59-64°F) and the water temperature is approximately 13-15°C (55-59°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!