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.

Reviewed · How we check

Illustration: a harbour beacon casting light over the sea at blue hour
Illustration

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

  1. 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.
  2. 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.
  3. Confirm local operationAt Bali Hai, establish which boats and island piers are operating. A forecast alone does not confirm that your ferry will sail.
  4. 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

Forecast and observation time serve different purposes
SourceTime to readWhat it tells you
TMD shipping forecastIssue date and forecast periodAn Upper Gulf forecast for a period, separate from whether a particular ferry is operating.
TMD Pattaya observationsStation and observation timeA 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

  1. Shipping weather forecast, Thai Meteorological Department; read the issue time and Upper Gulf area. Checked 23 October 2026.
  2. Ferry fare, tickets and illustrated timetable, 19 June 2026, Ferry Boat pattaya-kohlarn, operator; post and timetable read anonymously. Checked 23 October 2026.