Greystones, Ireland offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Greystones is known for the scenic Cliff Walk, which offers stunning views of the Irish Sea and connects the town to Bray. The best time to travel to Greystones, Ireland, is from June to August, with average air temperatures around 15-20°C (59-68°F) and sea temperatures around 14-16°C (57-61°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!