Haarumou, Solomon Islands offers 1 beach perfect for sunbathing, surfing, swimming, and more. Haarumou, Malaita Province, Solomon Islands, is known for its proximity to the Langa Langa Lagoon and the traditional shell money crafting. The best time to travel to Haarumou, Solomon Islands, is from May to October, with average air temperatures around 27°C (81°F) and water temperatures near 28°C (82°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!