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

Departing Galveston, Texas on September 24, 2026, the Royal Caribbean Cruises ship Mariner Of The Seas runs this 4-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: Galveston, Texas, Cozumel, Mexico, Galveston, Texas. Scroll the daily outlook below to pack smart for every port of call.

1. Day 1 — Thursday, Sep 24, 2026 — Galveston, Texas

   Galveston, Texas is a scheduled port of call on day 1 of the 4-night Western Caribbean Cruise cruise on Mariner Of The Seas. Expected weather: partially cloudy with highs near 82°F.

2. Day 2 — Saturday, Sep 26, 2026 — Cozumel, Mexico

   Cozumel, Mexico is a scheduled port of call on day 2 of the 4-night Western Caribbean Cruise cruise on Mariner Of The Seas. Expected weather: partially cloudy with highs near 84°F.

3. Day 3 — Monday, Sep 28, 2026 — Galveston, Texas

   Galveston, Texas is a scheduled port of call on day 3 of the 4-night Western Caribbean Cruise cruise on Mariner Of The Seas. Expected weather: partially cloudy with highs near 82°F.