Sandgeroi, Iceland offers 1 beach perfect for sunbathing, surfing, swimming, and more. Sandgeroi is known for its proximity to the Reykjanes Peninsula's geothermal attractions and the nearby Blue Lagoon. The best time to travel to Sandgeroi, Iceland, is during the summer months of June to August, when the average air temperature is around 10-15°C (50-59°F) and the sea temperature is approximately 9-11°C (48-52°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!