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Loading Travel Forecast…Loading Travel Forecast…Loading Travel Forecast…Departing Galveston, Texas on September 28, 2026, the Royal Caribbean Cruises ship Mariner Of The Seas runs this 5-night Western Caribbean Cruise sailing. It's a classic Caribbean cruise. Travelers sailing in September 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. Scroll the daily outlook below to pack smart for every port of call.
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: partially cloudy with highs near 82°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: partially cloudy with highs near 84°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: partially cloudy with highs near 84°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 81°F.
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Most PopularBaywatch Dolphin Tours – Pier 21 Galveston
From $36
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Most PopularCosta Maya Shore Excursion: Chacchoben Day Trip
From $64
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Budget PickChacchoben Mayan Ruins from Costa Maya
From $58
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Most PopularCozumel Snorkeling Tour: Palancar, Columbia and El Cielo Reefs
From $62
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Budget PickCozumel ClearBoat Adventure with Snorkeling
From $43
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Most PopularBaywatch Dolphin Tours – Pier 21 Galveston
From $36
Book NowPowered by Viator/Tripadvisor. Booking through our links may earn us a commission keeping this site free at no cost to you.
Galveston, Texas
Most PopularBaywatch Dolphin Tours – Pier 21 Galveston
From $36
Book NowCosta Maya, Mexico
Most PopularCosta Maya Shore Excursion: Chacchoben Day Trip
From $64
Book NowBudget PickChacchoben Mayan Ruins from Costa Maya
From $58
Book NowCozumel, Mexico
Most PopularCozumel Snorkeling Tour: Palancar, Columbia and El Cielo Reefs
From $62
Book NowBudget PickCozumel ClearBoat Adventure with Snorkeling
From $43
Book NowBefore you disembark Galveston, Texas
Short on time — quick options that fit before you head out.
Most PopularBaywatch Dolphin Tours – Pier 21 Galveston
From $36
Book NowPowered by Viator/Tripadvisor. Booking through our links may earn us a commission keeping this site free at no cost to you.
