The best time to go to Tonu 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 outdoor activities and exploring the island much more comfortable. The sea conditions are generally calmer as well, which is ideal for water-based excursions like snorkelling, diving, or boat trips to nearby islands. This is particularly appealing for couples looking for a relaxing beach holiday or adventure travellers keen to explore the natural beauty of Bougainville.While the wet season (November to April) brings lush greenery and fewer visitors, it also means higher chances of rain, more humid conditions, and potentially rougher seas, which could disrupt travel plans.