The short answer: Racha Yai is the nearer, more sheltered island. Racha Noi is further out, with deeper and clearer water. You do not have to pick one. Our snorkeling tour stops at both in a single day: two sites at Racha Noi, then one at Racha Yai.
People often search for the two islands as if they were one place. They are not. The water, the distance and the feel of each island are different, and that changes what you will see.
| Racha Yai | Racha Noi | |
|---|---|---|
| Distance from Phuket | Roughly 22 km offshore | Roughly 37 km offshore |
| Feel | Mostly sheltered east-coast bays, with a resort and bungalows on shore | Uninhabited, rocky, with granite boulders and deeper walls |
| Water | Shallow, calm bays that suit beginners | Deeper, with stronger currents at some sites |
| Visibility (one dive-guide source) | Averages 15 to 20 m | Regularly over 25 m |
| Best known for | Easy, shallow snorkeling over coral | Sea turtles and a realistic (never guaranteed) chance of manta rays |
Visibility, terrain and island details are from the Phuket101 Racha dive-site guide and the Southeast Asia Pilot. Distances are rounded, and sources give slightly different figures.
Racha Yai is about 3.5 km long, with a resort and bungalows along its shore. Its sheltered east-coast bays are why dive schools use it for training, and the same calm water suits snorkelers who are new to the open sea. Most of what you see sits within a few metres of the surface.
On our tour, the Racha Yai stop is Bay One. Artificial reefs have been placed there to help rehabilitate natural coral and marine life, and leopard sharks and rays are seen in the shallow, clear water. It makes a calm finish to the day.
Racha Noi is uninhabited and further out, and very few operators travel that far. Our first two stops are here. Manta Bay is known for resident sea turtles, a chance of manta rays and dramatic coral formations. Banana Bay is a sheltered bay with schools of colorful fish and resident moray eels around living coral. Whale sharks are occasionally spotted at Banana Bay, but that is rare and not something to expect.
Racha Noi has the clearer water, but it is the longer crossing. The cruise from Chalong Pier takes about 1.5 hours on a large motor yacht, with breakfast served onboard. Racha Yai then gives you a shallow, calm finish before the trip home. If you only had time for one island, you would miss either the clearest water or the easiest swim.
See the stops, inclusions and pickup areas on our Racha Island Snorkeling & Yacht tour.
Yes. Our snorkeling tour visits Racha Noi first (Manta Bay and Banana Bay) and Racha Yai last (Bay One), with three snorkel stops in total.
Everyone on the tour must be able to swim with a life vest on, and a mask and life vest are provided. Sea conditions vary by day and season, so see our month-by-month weather guide.
No. Manta Bay gives a realistic chance of seeing manta rays, but it is wildlife, not a show, and they are never guaranteed on any given day.