Violette Gribet
Nous avons fait le Ang Thong Marine Park Big Boat Tour et c’était super ! Les paysages sont incroyablement magnifiques ! Les montées sont rudes mais les vues en valent la peine ! Notre bateau n’était pas rempli ce qui nous a permis de profiter encore plus de l’endroit ! Nous avions pris l’option kayak et avons bien fait, super expérience ! Le repas et les collations étaient très bonnes ! Nous recommandons à 100% !
אופיר סויסה
רוצה להודות ולהמליץ על שליו מסיאם טורס על תכנון טיול מושלם, בהקשבה מדויקת למה שאנחנו צריכים, טסנו עם תינוקת והיה ראש שקט!!!!!!!! כל המעברים היו מושלמים! ללא המתנה בכלל, תמיד בזמן ובדיוק! סבלני קשוב פשוט כיף כיף כיף! אין ספק שאת הטיול הבא הוא יתכנן!
Koh Samui English Club
An awesome day out, very safe, modern and well presented trip. Staff and equipments impressive, a fair price for a fantastic experience. Beautiful scenery.
Sabine Seefeld
Wir haben die Schnorcheltour von Ao Nang aus gemacht. Es war die beste Tour, die wir in Thailand überhaupt gemacht haben. Einfach super! 👍🏼
Jason Taylor Fizz Benefits
Fantastic day out - exactly as advertised and just the right amount of time
Yes. Ang Thong National Marine Park is closed to all visitors from Sunday 1 November to Tuesday 15 December 2026. This is the park's yearly closure. No boat tours, private charters or kayak trips can enter the park in that period. Tours start again on Wednesday 16 December 2026, and those dates can already be booked.
Thailand's Department of National Parks closes Ang Thong for about six weeks each year so the coral reefs, beaches and island forest get a rest from visitors. The timing also matches the northeast monsoon, when the Gulf of Thailand is at its roughest around Koh Samui. The trip to the islands crosses open sea, and in these weeks it would often be cancelled for weather anyway.
Every Ang Thong tour on this site is blocked for the closure dates in its live booking calendar. The speedboat, big boat, VIP small-group and Red Baron sailing yacht tours run again from 16 December. Tours that only sail on certain days start a little later: the Premium Speed Catamaran from Friday 18 December and the kayaking tour from Saturday 19 December. Compare every Ang Thong tour to pick one.
The second half of December and January are among the busiest weeks of the year at Ang Thong. If your dates are fixed, book as soon as you know them. If the sea is too rough on your tour day after the park reopens, the operator cancels or moves the trip; it is not something you need to judge yourself.
Shorter boat trips closer to Koh Samui keep running in November and early December, weather permitting. Pig Island and Koh Tan tours leave from the south of Koh Samui and stay in sheltered water for most of the day. For a day on land, Koh Samui tours include ziplines, ATV rides and island sightseeing tours.
Checked October 2026 against the live booking calendars of every Ang Thong tour on this site. The national park can change its dates; when it does, the calendar on each tour page changes with it. For the best months to go once the park is open, see the best time to visit Ang Thong.
No. Ang Thong National Marine Park is closed from 1 November to 15 December 2026 for its yearly closure. No tours, private charters or kayak trips run in that period.
The park reopens to visitors on Wednesday 16 December 2026. The speedboat, big boat, VIP small-group and Red Baron sailing yacht tours run from that day.
Yes. Every date from 16 December 2026 is open in the live booking calendar on each tour page, and you can book and pay online now.
The Department of National Parks closes it so the reefs, beaches and forest can recover from visitors. The closure also falls in the northeast monsoon, when the sea crossing from Koh Samui is at its roughest.
The park usually closes from 1 November to 15 December, but the Department of National Parks sets the dates each year and can extend them for weather. The booking calendars on this site follow the official dates.
No. The closure applies to all visitors, so private charters and kayak trips cannot enter the park until 16 December 2026 either.
Pig Island and Koh Tan boat tours from the south of Koh Samui keep running in November and early December, weather permitting, and stay in more sheltered water. Land tours such as ziplines and ATV rides run all year.
