Mullingar, Ireland offers 1 beach perfect for sunbathing, surfing, swimming, and more. Mullingar is known for Belvedere House and Gardens, Lough Ennell, and the Mullingar Arts Centre. The best time to travel to Mullingar, Ireland, is from June to August, with average air temperatures around 15-20°C (59-68°F) and water 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!