Jamaica Montego Bay to Grand Cayman Sea Distance Calculator

Calculate the exact nautical distance from Jamaica Montego Bay, Jamaica to Grand Cayman, Cayman Islands. Plan your maritime journey with our professional route calculator.

Distance: 233.2 nm; nautical miles
Under Sail: 47 hours; at 5 knots
Under Power: 23 hours; at 10 knots
Best Time: December-April; Typical Sailing Season

Distance follows a sea-lane route. Sailing times are estimates at fixed cruising speeds and vary with vessel, weather, and currents.

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Distance: 233.2 nautical miles

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This map shows the direct sea route from Jamaica Montego Bay to Grand Cayman. The actual sailing path may vary based on weather conditions and navigation requirements.

Passage details

This is a moderately indirect coastal passage: the navigable route runs 18% longer than the 197 nm direct line, its heading turning from north-northwest to northeast. It is an international crossing between two countries.

Sea distance: 233.2 nm (431.9 km)
Direct line: 197.4 nm18% longer
Great-circle bearing: 285° (west-northwest)
Sea area: Caribbean Sea
Geographic extent: 0.8° × 3.5°
Crossing: Cross-border · Same region
From: Jamaica Montego Bay (Jamaica) 18.4762, -77.8939
To: Grand Cayman (Cayman Islands) 19.3133, -81.2546
Route basis: Sea-lane route

Passage timeEstimated passage time by cruising speed
Cruising speed	Duration
5 kn	47 hours
8 kn	29 hours
10 kn	23 hours
12 kn	19 hours

Distance follows a sea-lane route generated from marine traffic lanes; passage times are computed at fixed cruising speeds.

Read the methodology — How we calculate sea distances

Last reviewed 2026-06-17

About Jamaica Montego Bay to Grand Cayman Route

A medium ocean international sea route between Montego Bay and Grand Cayman, this passage between two island ports in the Caribbean region demands attention to short tropical squalls and afternoon thunderstorms.

The corridor within the same maritime region joins Montego Bay, Jamaica to Grand Cayman, Cayman Islands.

Navigation Tips

•Plan this medium ocean international leg in the Caribbean region with attention to short tropical squalls and afternoon thunderstorms.
•Provisioning for this medium ocean passage in Caribbean should account for regional supply networks.
•Allow time for entry formalities on this international leg within the same maritime region.
•Adapt safety equipment to Caribbean conditions for this medium ocean crossing.
•For a international crossing within the same maritime region, ensure clearance papers and visas are in order before departure.