Anse Chastanet or Marigot Bay: the St Lucia verdict
Published 2026-09-28. Conditions described are typical and never guaranteed.
The short answer
If you own a mask and you came to St Lucia to put your face in the water, go to Anse Chastanet. A protected reef begins only yards from the sand here, which makes it the best shore access snorkelling on the island, and no amount of scenery elsewhere changes that. If you came for a serene setting, a slow lunch by the water and an easy swim rather than an underwater expedition, go to Marigot Bay, one of the prettiest small bays in the Caribbean and a sheltered harbour of yachts and green hills.
That is the whole decision in two sentences. These two shores are not really competing for the same day. One is a diving and snorkelling cove with a resort behind it. The other is a photogenic inlet where the beach itself is almost a footnote to the harbour, the boats and the food. Choose by what you want to do with the hours, not by which name sounds grander.
Reef first: Anse Chastanet. Setting and a serene half day: Marigot Bay.
Sand: neither is a golden sweep, and that matters
Let us kill the sunbathing fantasy early, because it decides more than people expect. The sand at Anse Chastanet is dark volcanic grey rather than golden, modest in size and framed by the Anse Chastanet resort rather than opening onto a broad open beach. It is honestly not the place for a long towel day with a book. The reason to come is the reef and the diving, which are exceptional, and the sand is simply the launch pad.
Marigot Bay does not give you a big beach either. La Bas, the strip across the water, is a narrow band of pale sand backed by palms, not a broad stretch. The appeal is the serene setting, the calm water and the waterside dining rather than the size of the beach. Set your expectations to a photogenic half day and you will love it. Arrive expecting a wide resort strip and you will feel short changed.
So on sand alone, both lose to the white sand coves further north. If a soft pale beach is your priority, neither of these is your answer, and you should read on to the flip point below. Between the two of them, though, the contrast is style rather than size: dark volcanic grey framed by forest at one, pale palm backed strip across a harbour at the other.
Water: this is where the gap opens
Here the two shores finally separate cleanly. At Anse Chastanet the water is clear and sheltered over a protected reef that holds well over a hundred fish species, and it starts close enough that you can slip in with a mask and fins and reach living reef without a boat or a long swim out. Head for the southern end where the marine reserve begins, respect the reserve markers, and go early before the day boats arrive. There is no permanent watch, so swim within your depth and treat the calm as typical rather than guaranteed.
Marigot Bay offers very calm, protected water because the inlet is a famous hurricane hole, and that shelter makes for an easy, pleasant gentle swim. What it does not offer is a reef at your feet. This is water to float in and enjoy, not water to explore. Mind the boat traffic in the bay, keep within your depth, and again do not count on a lifeguard.
Put simply, if the swim is the point, both are gentle. If the swim is a means to reach reef, only one delivers, and it delivers better than almost anywhere else you can walk in from the shore in St Lucia.
Facilities and crowd
The two coves also feel different once you are settled. At Anse Chastanet the food, drinks and dive operations come from the resort, and the Trou au Diable grill sits on the beachfront. You can visit without staying at the resort, since the shore has public access, but the facilities and the long established dive operation belong to the resort, so keep to the public shore and confirm any dining or lounger access directly with them. Crowd wise, the reef draws people, and day boats fill the cove as the morning wears on, which is exactly why an early start rewards you.
Marigot Bay rings its water with waterside bars, restaurants and resorts. On the La Bas side, Doolittle's at the Marigot Beach Club offers indoor outdoor dining with yacht views, and the colourful Roots Bar is the casual rum shack on the sand. Reaching La Bas means a short, inexpensive ferry across the bay that runs through the day, a crossing of only a couple of minutes that becomes part of the charm. The crowd here is a marina crowd, relaxed and lunch minded, and the bay stays pretty rather than packed.
So the facilities question comes down to mood. Do you want a beachfront grill attached to a dive base, or a harbour lined with tables and a little ferry hop to your lounger? Both are serviced. Neither is bare bones. They simply serve different appetites.
Who each one is for
Choose Anse Chastanet if
- Snorkelling or diving is the whole reason you are on the west coast.
- You are happy to trade golden sand for the best shore reef on the island.
- You can arrive early, before the day boats, for the clearest, quietest water.
- You do not mind a steep, rough access road from Soufriere, or you plan to arrive by boat, which many visitors prefer for the first view of the cove and the Pitons.
Choose Marigot Bay if
- You want scenery, calm water and a long lunch more than an underwater day.
- You like the idea of a short ferry to a slim palm backed beach.
- Waterside dining with yacht views is part of the plan, not an afterthought.
- A serene, photogenic half day suits you better than a full beach marathon.
The situation where the other one wins
Now the honest part, because the answer flips more than a simple verdict admits.
If the sea is stirred up or the day boats have already crowded the reef at Anse Chastanet, its single advantage narrows, and the sheltered calm of Marigot Bay suddenly reads as the smarter, more restful choice. On a rougher day, the hurricane hole holds its poise while an exposed reef cove can turn murky. That is the day the pretty inlet wins outright.
The reverse is just as true. If you brought a mask to Marigot Bay expecting to see fish, you will be disappointed, and the fix is not to stay put but to go and find reef. Anse Chastanet is that reef. On any calm morning when snorkelling is the goal, the harbour cannot compete and should not try.
There is also a third path worth naming. If what you actually crave is quiet, neither headline cove is the purest answer. The secluded neighbour, Anse Mamin, sits a short walk or boat hop from Anse Chastanet and stays calm even when the reef next door draws a crowd, with a single simple bar and old plantation trails behind the sand. And if you want another dive and snorkel cove with a wreck offshore, Anse Cochon further up the coast holds the Lesleen M just off the beach. Families and anyone after soft white sand and a serviced, gentle day should instead point north to Pigeon Island Beach, where two calm coves sit inside the national landmark with a cafe, toilets and shaded lawns.
Timing and planning notes
Both shores read best from December to May, the drier season that brings the calmest, clearest water, though each rewards across the year in its own way. Our guidance on the best months to plan a St Lucia trip covers the wider seasonal picture, and it is worth a look before you fix dates. Couples weighing a romantic base will find the harbour setting hard to beat, while snorkellers who want more reef days can chain several coves along the west coast.
For deeper comparisons, we have put Anse Chastanet head to head against its quiet neighbour in the guide to Anse Chastanet or Anse Mamin, and against the wreck cove up the coast in the piece on Anse Chastanet or Anse Cochon. Both help if snorkelling is your real reason for the trip. For couples specifically, our notes on the most romantic shores are worth a scan, and if you are travelling with children the family focused rundown will steer you north rather than to either of these coves.
Ready to book a club day
When you want a table on the sand or a lounger with your name on it, plan through the destination clubs. Browse the full lineup on our St Lucia beach clubs page to enquire about a club day, compare what each address offers and reserve ahead for busy dates. For everything else on the island, from coves to seasons, start at the St Lucia hub and build the rest of your shore days from there.