Ao Khao Kwai
อ่าวเขาควาย
Relaxed hippie vibes and white sand on the north of Koh Phayam island
Recommended by us
Hin Talu
A striking rock arch rising from the sea off Koh Phayam — snorkellers get under it at low tide. The richest page in the area at 1,300+ words; genuinely notable.
Laem Son National Park
Mangroves, offshore islands, and one of the longest undeveloped coastlines in the south. The park office is on the mainland but day trips to the islands leave from here.
Wat Koh Phayam
The island's main temple — a calm spot inland from the beach chaos. Worth a visit on a slow morning before the longtails start running.
Get to Koh Phayam
Fly or overnight bus to Ranong, then a ferry to Koh Phayam (around 45 minutes by speedboat) — the least-crowded island approach in the south.
eSIM for Thailand
Land with data already working and skip the airport SIM queue. We tested six plans — code THAIHOLIDAY saves 10%.
Travel insurance
Boat trips and hired scooters are the default here — sort cover before you sail and check both the motorbike and water-sports clauses.
Attractions in Koh Phayam
When to go
Nov–Feb Northern Koh Phayam's calmer bay — Ao Khao Kwai sees good swimming conditions and steady speedboat runs from Ranong. Speedboats run every two hours in high season; the 15-minute longtail from the pier is easy to catch.
Mar–Apr Quieter than the southern beach at Ao Yai, and March warmth suits relaxed beach days. Speedboat frequency from Ranong begins to thin by late April as the season winds down.
May–Oct Low-season boats from Ranong cut back sharply, and many Ao Khao Kwai guesthouses close with the rest of Koh Phayam. Rough swells make the bay unappealing even on dry days within the monsoon window.
More to explore around Koh Phayam
About Ao Khao Kwai
Last updated July 2026
Ao Khao Kwai (Buffalo Bay) is a small bay on the northeast coast of Koh Phayam, a car-free island in the Andaman Sea off Ranong province. The bay sits about 800 metres of palm-backed beach with no road access — a longtail from the island’s main pier is the only way in. There’s no ATM, no 7-Eleven, and no mobile phone signal worth mentioning. That’s the entire pitch.
What to Do
Not much, and that’s the point. Ao Khao Kwai suits people who want to read, swim and eat without a plan. The beach is long, clean and usually empty midweek. The water is calm enough for swimming at mid-tide — the gradient is gentle, making it one of the better bays on the island for relaxed paddling. Tide pools appear at low tide at the headland edges. Snorkelling is decent around the rocky headlands at either end; bring your own mask if you have one, as rental gear is limited. For proper reef diving, a longtail to the offshore islands gives you clearer water — agree on a price, route and return time up front.
Several bungalow operations back the beach on the hillside above, ranging from basic bamboo huts to slightly more comfortable fan rooms. A few of the attached restaurants serve fresh seafood at local prices — the kind of meals that are difficult to find once you’re back on the mainland.
Walking trails connect Ao Khao Kwai to the island’s other beaches and to the interior cashew plantations, which cover much of Koh Phayam’s interior. The full trail to the main pier takes 30-40 minutes on foot through the plantation and scrub. Motorbikes can be rented at the main pier for exploring the rest of the island, including Ao Yai (the island’s longest beach) and the village on the western side.
Getting There
Fly from Bangkok to Ranong (roughly 1 hour, Nok Air operates the route), then take a songthaew to the pier and catch a speedboat to Koh Phayam (45 minutes, 350 baht) or a slow boat (about 2 hours, 200 baht). From Koh Phayam pier, a longtail to Ao Khao Kwai takes around 15 minutes. In the high season (December to March), speedboats run at least every two hours between 09:30 and 16:30. Low-season boats depend entirely on weather.
Insider Tip: Book bungalows directly with the owners by phone — many of the smaller operations here don’t appear on booking platforms. November to April only; most places close in the monsoon. Bring all the cash you need from Ranong.
Frequently Asked Questions about Ao Khao Kwai
Is there road access to Ao Khao Kwai?
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