Portrush, United Kingdom offers 6 beaches perfect for sunbathing, surfing, swimming, and more. Portrush is known for its stunning coastal scenery and the Royal Portrush Golf Club. The best time to travel to Portrush, United Kingdom, is from June to August, when the average air temperature is around 15-18°C (59-64°F) and the average water temperature is about 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!