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You'll pay a 300 Baht entrance fee in cash to park rangers when you arrive. The archipelago is open daily from 8:00 am to 5:00 pm, though it shuts down completely from November through mid-December for monsoon season.
Ang Thong National Marine Park is open daily from 8:00 am to 5:00 pm. Most organized boat tours align with this window. The entire archipelago shuts down every year from November through mid-December when monsoon weather makes the crossing dangerous.
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| Day | Hours | Note |
|---|---|---|
| Monday–Sunday | 08:00–17:00 | The single restaurant on Ko Wua Ta Lap closes between 15:00 and 18:00. |
Heavy monsoon winds shut the park down entirely from November 1 to December 15. Rough seas make the crossing dangerous. Rangers reopen the islands once the weather clears, usually between December 10 and 20.
Foreign adults pay a 300 Baht national park entrance fee, while children aged 3 to 14 cost 150 Baht. You hand this cash directly to the rangers on arrival. Tour operators almost never include this charge in your initial boat booking, so don't forget to bring small bills.
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| Category | Price | Note |
|---|---|---|
| Foreign Adult | 300 Baht | Paid in cash at the park |
| Foreign Child (ages 3-14) | 150 Baht | Paid in cash at the park |
| Thai Adult | 40 Baht | Some sources cite 50 Baht; actual on-site rates apply |
| Thai Child | 20 Baht | Some sources cite 25 Baht; actual on-site rates apply |
| Camping Space | 80 Baht | Per person, per night. Tent rentals cost an additional 450 Baht. |
| Park Bungalows | 600 - 1,500 Baht | Per night. 600 Baht for a 2-person unit, 1,500 Baht for an 8-person unit. |
No regular free entry days.
Planning your visit to Ang Thong National Marine Park? Find tours with free cancellation and skip-the-line options.
View All ToursJanuary to April is the best time to visit, bringing the calmest seas and clearest water for snorkeling. This peak season also means heavy day-tour crowds, which you can thin out by booking a shoulder-season trip between May and September. Never plan a visit for November or early December, since monsoon weather forces the entire park to close.
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| Period | Crowd Level | Recommendation |
|---|---|---|
| Early morning (08:00–09:30) | Low | Overnight campers and the first private speedboats get the islands to themselves before the organized groups dock. |
| Mid-morning (09:30–12:00) | High | The steep Ko Wua Ta Lap viewpoint trail and the Emerald Lagoon stairs fill up as the bulk of day tours arrive. |
| Early afternoon (12:00–15:00) | High | Kayaking channels are busy, making this a smart window to tackle the quieter 1 km hike inland to Bua Bok Cave. |
| Late afternoon (15:00–17:00) | Moderate | Day boats pack up and depart for the mainland, returning the archipelago to silence for those staying overnight. |
Plan for a full-day trip running roughly 8:30 am to 5:00 pm. Since independent access is prohibited, your exact schedule depends on whether you book a private charter or join a standard group tour. You can also extend your stay overnight by booking a park bungalow or campsite on Ko Wua Ta Lap to experience the islands without the day-tripper crowds.
Most tour packages exclude the mandatory national park entrance fee. Bring cash to pay the rangers directly when you arrive—300 Baht for foreign adults and 150 Baht for kids aged 3 to 14. Small bills keep the line moving.
Ditch the flip-flops if you plan to climb the Wua Ta Lap viewpoint. The 500-metre trail gains about 400 metres in elevation over jagged rocks, requiring you to haul yourself up with ropes. You'll need closed-toe sneakers with solid grip to avoid injury.
Speedboats cut the crossing from Koh Samui down to about 45 minutes, but they hit the waves hard. If you get seasick easily, book a big boat tour instead. The ride takes up to two hours, but the added stability makes a massive difference.
Book your trip between January and April for the calmest water and clearest snorkeling visibility. Don't plan a visit in November or early December. The entire park shuts down for the monsoon season, halting all boat access until the weather clears.
Keep your drone at the hotel unless you secured written permission from the Department of National Parks beforehand. Rangers enforce the ban strictly across the islands. Flying an unauthorized drone carries fines up to 100,000 Baht and risks equipment confiscation.
No. You have to book a licensed tour or private charter to reach the park. There aren't any public ferries, so almost everyone arrives on an organized day trip from Koh Samui, Koh Phangan, or Koh Tao.
Foreign adults pay 300 Baht and children aged 3 to 14 pay 150 Baht. You usually hand this cash directly to park rangers when you arrive. Most tour operators exclude the entrance fee from their package prices, so bring small bills.
Ang Thong opens daily from 8:00 am to 5:00 pm. The park shuts down completely from November 1 to roughly December 15 for monsoon season. Exact reopening dates depend on the weather, usually falling between December 10 and 20.
January to April brings the calmest seas and the clearest water for snorkeling. May to September works well as a quieter shoulder season, though you might catch afternoon rain. Avoid October and November, when rough water frequently forces operators to cancel trips.
Yes, you can sleep on Ko Wua Ta Lap after the day boats leave. The park rents basic bungalows starting at 600 Baht for a two-person unit, or you can camp for 80 Baht a night. Tent rentals cost 450 Baht.
Only if you secure written permission from the Department of National Parks beforehand. Flying without a permit is strictly prohibited. Rangers hand out fines up to 100,000 Baht and will confiscate your equipment.
Single-use plastics are banned. Guides usually ask you to leave plastic water bottles on the boat. You'll also need to avoid chemical sunscreens containing oxybenzone or octinoxate to protect the coral.
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