Koh Larn Thailand
Koh Larn weather and sea conditions
Use the Thai Meteorological Department’s shipping forecast for the Upper Gulf before a Koh Larn crossing. The forecast destination was checked 23 October 2026; this page gives no live clearance. Read the bulletin’s issue time, wind, waves and thunderstorm wording, then confirm actual sailings at the pier. A Pattaya rain icon is not a marine decision. Source.

At a glance
Use the Thai Meteorological Department’s shipping forecast for the Upper Gulf before a Koh Larn crossing. The forecast destination was checked 23 October 2026; this page gives no live clearance. Read the bulletin’s issue time, wind, waves and thunderstorm wording, then confirm actual sailings at the pier. A Pattaya rain icon is not a marine decision.
Checked · Source
Check the forecast in this order
- Open the official shipping forecastRead TMD’s latest shipping bulletin and check the date and issue time. A cached search excerpt may show an older issue.
- Read the Upper Gulf sectionCheck the wind, wave height and thunderstorm wording for the area of your crossing. Do not substitute an Andaman or lower-Gulf warning.
- Confirm local operationAt Bali Hai, establish which boats and island piers are operating. A forecast alone does not confirm that your ferry will sail.
- Keep an alternativeDelay the trip, shorten the day, or keep a confirmed overnight arrangement. A faster boat is not a solution to a marine warning.
Seasons are not permission to cross
No month guarantees a safe trip or clear visibility. The boat operator’s timetable remains a schedule; local restrictions and the latest conditions decide what runs.
Return to ferry departures, swimming checks or a flexible day plan. We do not embed a forecast that may silently go stale.
Read the right weather timestamp
| Source | Time to read | What it tells you |
|---|---|---|
| TMD shipping forecast | Issue date and forecast period | An Upper Gulf forecast for a period, separate from whether a particular ferry is operating. |
| TMD Pattaya observations | Station and observation time | A measurement at that location, separate from the forecast period and the operator’s sailing decision. |
Weather-page links and time fields checked 28 October 2026; no live conditions are republished.
Sources
- Shipping weather forecast, Thai Meteorological Department; read the issue time and Upper Gulf area. Checked 23 October 2026.
- Ferry fare, tickets and illustrated timetable, 19 June 2026, Ferry Boat pattaya-kohlarn, operator; post and timetable read anonymously. Checked 23 October 2026.