5-Night Cruise on Mariner Of The SeasWestern Caribbean Cruise - Weather

Join Royal Caribbean Cruises's Mariner Of The Seas for a 5-night voyage on the Western Caribbean Cruise route, setting out from Galveston, Texas on July 20, 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. The forecasts below break the weather down port by port.

1. Day 1 — Monday, Jul 20, 2026 — Galveston, Texas

   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 87°F.

2. Day 2 — Wednesday, Jul 22, 2026 — Costa Maya, Mexico

   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.

3. Day 3 — Thursday, Jul 23, 2026 — Cozumel, Mexico

   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: clear with highs near 86°F.

4. Day 4 — Saturday, Jul 25, 2026 — Galveston, Texas

   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: clear with highs near 90°F.