Blokker, Ireland offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Blokker, Leinster, Ireland, is known for its proximity to the historic city of Dublin and attractions like the Guinness Storehouse and Trinity College. Blokker is not in Ireland; it is in the Netherlands, but if you meant Ireland, the best time to visit is late spring to early autumn (May to September) with average air temperatures around 10-18°C (50-64°F) and water temperatures around 10-15°C (50-59°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!