Present year-round; the constraint is time of day, not month. Cleaning-station visits decline significantly from morning to evening. Sighting probability on a given dawn dive is high but not guaranteed, and surface conditions cancel more dives Jun-Oct than the sharks do.
No formal closure. Typhoon risk runs roughly May-Oct and sources disagree on how badly it bites: DAN says avoid Jun-Sep, Divernet calls Mar-Sep the most stable window, and one field account calls the Jul-Dec rainy season mild. Encoded 'limited' across the contested span rather than picking a side. See OQ-07. Low operating
Destination detail