The best time to go to Serai, North Sulawesi, is during the dry season, which typically runs from April to October.During these months, you'll experience consistently sunny days and calm seas, which are ideal for all outdoor activities, especially diving and snorkelling. The visibility underwater is usually at its peak, making it superb for exploring the vibrant marine life around Bunaken National Park. This period also coincides with less humidity, making your overall experience more comfortable.For travellers primarily interested in marine activities and enjoying the beaches, scheduling your trip within this dry season will ensure the best conditions.