Weather flexibility is part of responsible Hong Kong boat dive planning. Check the forecast close to departure, but do not interpret it alone. The Hong Kong Observatory publishes marine forecasts with weather and sea-state information for ten marine areas. Its marine forecast introduction explains the coverage and 24-hour forecast format.
Ask the operator which conditions would change the route, delay boarding or cancel the trip. A professional decision may favour a sheltered alternative or no launch. Do not pressure a crew to follow an earlier promise. The final decision should consider vessel capability, site conditions, diver readiness and the latest marine information.
Keep transport and personal plans adjustable. Allow time for loading, briefings, travel, surface intervals and an uncertain return. Do not schedule an immovable flight immediately after diving. Ask about storage, food, seasickness and communications before the day. Pack according to the confirmed route, not a wish list of possible sites.
Send a concise final enquiry with your group size, certification, recent dive date, preferred area and fallback dates. Add whether you need equipment, a refresher or private space. Ask for the confirmed meeting point, price basis, inclusions, weather terms and contact method. Then wait for written confirmation before making the plan non-flexible.