The best time to go to Mussau Island is during the dry season, which typically runs from May to October.During these months, you'll experience more consistent sunshine and lower humidity, making it ideal for outdoor activities like snorkelling, diving, and exploring the island's natural beauty. The calmer seas also ensure smoother boat transfers to and from the island, which is a key part of the travel experience. This period offers the most comfortable conditions for enjoying the island's pristine beaches and lush landscapes.For those planning activities around the ocean, such as diving or fishing, the dry season generally provides better visibility underwater and more predictable sea conditions.