Chumphon Diving: Sites, Season, Costs & Pinnacle Guide

Featured image: diego_cue, CC BY-SA 3.0, via Wikimedia Commons.

Chumphon Diving at a Glance

Chumphon works as a gateway and day-trip base on the Gulf coast. Boats leave from Pak Nam, the estuary where Chumphon's fishing fleet works. From there, trips run to the Ngam islands, where Koh Ngam Yai and Koh Ngam Noi reach a maximum depth of 16 m. Search results blur two different things under one name. Chumphon Pinnacle is an offshore rock that begins around 16 m and drops to about 30 m. Divers usually reach it from Koh Tao rather than from Chumphon town. Local diving means the shallower reefs and rocks near the Ngam islands. Decide which one you want before you book anything.

• Chumphon Pinnacle: deep offshore site, about 16–30 m, aimed at qualified divers, usually dived on Koh Tao trips.
• Diving from Chumphon: Pak Nam departures to the Ngam islands, Hin Lak Ngam, Hin Pae Koh Ngam and a navy wreck, 5–20 m.
• Boat choice matters: one local operator lists a 19 m dive boat carrying up to 20 divers, with Koh Tao among its destinations.

Dive Sites Around Chumphon

Depths below come from published site descriptions, and operators may adjust routes to the day's sea state. Ask your boat which sites are on the day's plan. Wreck fans can pair the Ngam islands with the HTMS Prap 741, which sits near Koh Ngam Noi. For other hulls in the country, see our guide to wreck diving in Thailand. No depth is published for that wreck, so ask the operator for it before you plan gas or certification fit.

Chumphon Pinnacle: What to Know Before You Go

Chumphon Pinnacle is a lozenge-shaped rock with a flat bottom that slopes away from its base. Its top sits near 16 m and its base reaches about 30 m. Gray reef sharks patrol around Barracuda Rock at roughly 25 m and below, and some reach a couple of meters long. Big grouper, barracuda shoals, stingrays and moray eels fill the gaps when sharks stay away. Its offshore position often gives visibility of 20 m or more. Whale sharks turn up only a few times a year, so treat them as a bonus. Sharks are possible, not guaranteed. PADI certification limits cap Open Water divers at 18 m and Advanced divers at 30 m. Open Water divers should therefore skip the lower sections. Check with the operator which boats actually run to the Pinnacle and from where.

Best Time to Dive Chumphon

Local sources point to March to September as the calmest window. Seas are flatter then, and visibility can reach up to 20 m. The late-season trips tend to bring the best underwater clarity. Gulf weather can still differ from year to year. Ask the operator about sea state for your exact dates before you commit, especially for the longer crossings. Rough water cancels offshore trips first. Shallow Ngam sites are the safer choice if the forecast is mixed.

Getting to Pak Nam and Where to Stay

Pak Nam is the departure point, and the boat ride begins past working fishing docks. Staying near Pak Nam keeps the early start simple. One listing showed small hotels from ฿470 and ฿790 per night for two guests, though rates move with season. Riverside guesthouses and family homestays suit a plain overnight before dawn. No official transfer time is published for the town-to-pier run, so ask your operator for pickup details. If you are arriving on a late train or bus, book the night before. For ferry and rail options toward Koh Tao, use the operators' own timetables. Our dive resorts in Thailand guide covers stays that bundle diving.

Costs and How to Book

Prices and hours checked November 2026. One Chumphon operator lists a snorkel day trip at ฿1,490 per person. Two-dive packages run about ฿2,900 with your own gear and ฿3,400 with rental equipment. An Open Water course is listed at ฿11,000 over four days, or ฿16,000 with accommodation. Koh Tao day trips and Similan liveaboards sit at higher price tiers. Our Cost of Diving in Thailand: Dives, Courses and Trips guide compares them. Confirm that English-language support is available before paying. One local operator reportedly expects guests to bring a Thai partner or speak Thai. Insurance matters for deep or remote trips, and Divers Alert Network coverage is one common option.

Who Chumphon Diving Is (and Isn't) For

Match your certification and expectations to the site list before you commit. These calls cover most divers.

• Beginners and Open Water divers: Koh Ngam Yai and Noi, to 16 m, and Hin Pae Koh Ngam, to 17 m, fit your limit.
• Advanced divers: Hin Lak Ngam to 20 m, and the Pinnacle on a Koh Tao trip.
• Snorkelers: day trips list Ngam island stops at ฿1,490 per person.
• Reef and visibility chasers: expect 20 m at best, so look at the Similan Islands or Koh Tao instead.
• Mistakes to avoid: treating the Pinnacle as a house reef, skipping the language check, and expecting guaranteed sharks.

Chumphon vs Koh Tao, the Similans and Hua Hin

Chumphon suits quieter day diving at a modest price. Koh Tao has more operators and direct Pinnacle access. Andaman-side trips offer clearer reef diving, and our Andaman Sea Diving: Best Areas, Season and Costs guide explains that coast. Ranong Diving: Surin, Richelieu Rock & Koh Phayam Trips is another Andaman-side option. For a Gulf alternative closer to Bangkok, read our Hua Hin Diving: Day Trips, Seasons & Alternatives guide. Compare the whole country in 8 Best Dive Sites in Thailand by Coast and Season and in our Best Diving in Thailand: 6 Top Regions, Seasons & Who Each Suits ranking. To plan the full trip, start at Thailand dive trip planning or the Scuba Diving Thailand: 7 Best Sites, Coasts & Trip Planner overview.