Our pages about sailing in Thailand are with the courtesy of the South East Asia Pilot's team.
Neither coastline is in a hazardous weather zone; there are no typhoons and even the seasonal monsoons are gentle. Temperatures are 250-320C and the sea rarely varies from 280. Comfortable cruising is possible all year round, even on the Andaman Sea coast, with its strong southwest monsoon breezes. Thai waters have long been an essential stopover for world cruisers; many never leave.