What to bring on a Grand Cayman boat trip

Everything on this list comes off a sourced fact, and the list is short because of that. You will be standing in about three feet of water at the sandbar and wading to roughly chest height, so nothing goes in a pocket. The sea runs near 80°F in January and 86°F in August, so a wetsuit is not the question. The tap water is safe, so a refillable bottle is worth more than a purchase ashore. And the thing most visitors get wrong is not kit at all: it is knowing which dollar the price in front of you is written in.

Sandbar depthAbout 3 ft

Sea, January79.9°F / 26.6°C

Sea, August86°F / 30°C

Tap waterSafe, piped supply

Notes in circulationCI$1 to CI$100

Change from US cashUsually in CI$

Money is the item people get wrong

The Cayman Islands dollar is pegged at CI$1 = US$1.20 and has been since 1 April 1974. Notes come in CI$1, 5, 10, 25, 50 and 100; coins in 1, 5, 10 and 25 cents. Shops, hotels and restaurants accept US dollars, and they take them at CI$0.80 to the US dollar. The peg implies CI$0.8333. So paying cash in US dollars costs you roughly 4% against the peg, which is small. Misreading a CI$ price as a US$ price costs 20%, which is not.

Two practical consequences for what you carry. First, change from a US-dollar payment usually comes back in Cayman dollars, so you can end a day holding CI$ notes that are no use to you once you leave. Spend them or plan around them. Second, banks buy US dollars at CI$0.82, which is a different number again from the CI$0.80 you get in a shop. The full arithmetic is on the dollar trap page, and it is the one page here worth reading before you land.

What the water is actually like

At the Stingray City sandbar visitors stand in about three feet of water and wade in to roughly chest height. It is a standing activity, not a swimming one. The animals are southern stingrays, and staff hand out chunked squid so that visitors can feed and pet them, which means your hands will be in the water and holding bait.

Two things follow without any invention on my part. Whatever you carry has to survive being at chest height in salt water or stay on the boat. And the deeper site that shares the Stingray City name is a scuba dive rather than a wade, so check which one a listing means before you plan around the three-foot figure. That distinction is set out on the Stingray City page.

Water, from the tap

Grand Cayman’s piped supply is produced by reverse osmosis, the Water Authority states it exceeds the World Health Organisation guideline for drinking water quality, and it is sampled at 21 taps across the network. Fill a bottle before you leave. On a trip of two and a half to five hours, that is the difference between one purchase and none. The detail, including the one case it does not cover, is on the tap water page.

Worth having

Money, with the CI$ and US$ distinction understood before you spend
A refillable bottle, filled from the tap
Something to keep valuables dry or leave them aboard: the sandbar is chest-deep
Sun cover for an open boat in a tropical climate, in any season
Patience for a Sunday: the public bus does not run

What this page will not invent

Any sunscreen rule: no source here sets one, so this page sets none
Insect repellent advice: nothing on mosquito conditions is sourced here
Plug or socket guidance: not in this site’s sources
A phrasebook: English is official and spoken by about 90% of residents
A roaming plan recommendation: no coverage or cost claim is sourced here

The season you are packing for

The wet season runs May to October and the dry season November to April, with the Atlantic hurricane season overlapping from June to November. Sea temperature moves from about 79.9°F (26.6°C) in January to about 86°F (30°C) in August, which is a spread of roughly six degrees. Pack for the rain window rather than the water temperature. More on the two overlapping calendars on when to go.

If you are coming off a ship

George Town is a tender port. You will carry whatever you bring from the ship, through a tender, on to a second boat, and back again. That is an argument for less rather than more. See arriving by tender and how much time you need.

Check dates & availability

Every tour on this site offers free cancellation up to 24 hours before it starts — checked against all seven listings on 16 August 2026.

Frequently asked questions

What should I take to Stingray City?

Plan for standing in about three feet of water and wading to chest height, so nothing loose in a pocket. Take a refillable bottle filled from the tap, sun cover for an open boat, and money with the CI$ and US$ difference understood before you spend.

Should I bring US dollars or Cayman dollars?

US dollars are accepted, at CI$0.80 to the US dollar against a peg that implies CI$0.8333, so paying cash in US dollars costs about 4%. The bigger risk is misreading a CI$ price as US$, which costs 20%. Change usually comes back in Cayman dollars.

Do I need to bring drinking water?

You can fill a bottle from the tap. Grand Cayman’s piped supply is produced by reverse osmosis and the Water Authority states it exceeds the World Health Organisation guideline for drinking water quality, with 21 sample taps tested across the network.