The best time to go to Sibu Island is during the dry season, which runs from April to September. This period offers the most favorable weather for enjoying the island's outdoor activities.During these months, you can expect plenty of sunshine and calm seas, making it ideal for snorkeling, diving, and island hopping. The clear waters provide excellent visibility for exploring marine life, and the comfortable temperatures are great for relaxing on the beaches.While the dry season is generally preferred, travelers seeking a quieter experience might consider the shoulder months of April and September.