For each of the next 7 days: whether conditions look normal for a ferry crossing (ok), possible with delays (caution), ferries likely suspended (blocked), or unknown.
Koh Samui watch
Each day is graded from that day's forecast maximum wave height and gusts, TMD Gulf wave bulletins still in force, and, for the first 3 days, any nearby cyclone. The worst signal wins.
ok: crossing conditions look normal.
caution: possible, but expect delays or cancellations.
blocked: ferries likely suspended.
unknown: no wave forecast for that day; cannot be assessed.
Forecasts beyond 3 days are less reliable. Always confirm with the operator or at the pier on the day.