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Loading Travel Forecast…Loading Travel Forecast…Loading Travel Forecast…The Mariner Of The Seas sails a 5-night Western Caribbean Cruise itinerary with Royal Caribbean Cruises, departing Galveston, Texas on July 11, 2026. It's a classic Caribbean cruise. Travelers sailing in July can generally expect warm, sunny weather with gentle trade winds. Ports of call include Galveston, Texas, Costa Maya, Mexico, Cozumel, Mexico, with 1 more along the way. Use the day-by-day forecast below to plan what to pack for each stop.
Galveston, Texas is a scheduled port of call on day 1 of the 5-night Western Caribbean Cruise cruise on Mariner Of The Seas. Expected weather: clear with highs near 91°F.
Costa Maya, Mexico is a scheduled port of call on day 2 of the 5-night Western Caribbean Cruise cruise on Mariner Of The Seas. Expected weather: clear with highs near 89°F.
Cozumel, Mexico is a scheduled port of call on day 3 of the 5-night Western Caribbean Cruise cruise on Mariner Of The Seas. Expected weather: rain with highs near 87°F.
Galveston, Texas is a scheduled port of call on day 4 of the 5-night Western Caribbean Cruise cruise on Mariner Of The Seas. Expected weather: partially cloudy with highs near 87°F.
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