Pig Island is a short crossing in sheltered water, so it runs almost all year. The question is comfort and visibility, and both follow the Gulf of Thailand's calendar rather than the rest of the country's.
Flat mornings, clear water at Koh Tan, and the widest choice of departures. March to May is hottest; the sea is at its clearest.
Afternoon showers start, mornings are still usually fine. Boats run; the sunset tour becomes a gamble later in October.
The Gulf's wet season is late in the year. Boats still go out on calm days but cancellations for swell are normal in November and early December, and captains reorder the islands to find shelter. If you are booking for these months, take the catamaran and the morning departure, and book with free cancellation so a rough day costs nothing.
Morning has the emptiest beach and the clearest reef. Sunset has the light and the cooler air, and the boats are fewer, but the water at Koh Tan is often stirred by then.
If the operator cancels for weather you move to another date or take a full refund. Your own cancellation is free up to 24 hours before departure.
Yes. Tours run on any day the sea allows; the operator cancels for swell, not for rain.
March to May for the flattest sea and clearest water, with February and June to August close behind.
You choose another date or a full refund. There is no charge for a weather cancellation.