10-Night Cruise on Seven Seas MarinerShimmering Reefs, Mighty Ruins Tampa Bay To Tampa Bay - Weather

The Seven Seas Mariner sails a 10-night Shimmering Reefs, Mighty Ruins Tampa Bay To Tampa Bay itinerary with RSSC Cruises, departing Tampa, Florida on December 11, 2026. It's a classic Caribbean cruise. Travelers sailing in December can generally expect warm, sunny weather with gentle trade winds. Ports of call include Tampa, Florida, George Town, Grand Cayman, Montego Bay, Jamaica, with 5 more along the way. Use the day-by-day forecast below to plan what to pack for each stop.

1. Day 1 — Friday, Dec 11, 2026 — Tampa, Florida

   Tampa, Florida is a scheduled port of call on day 1 of the 10-night Shimmering Reefs, Mighty Ruins Tampa Bay To Tampa Bay cruise on Seven Seas Mariner. Expected weather: partially cloudy with highs near 76°F.

2. Day 2 — Sunday, Dec 13, 2026 — George Town, Grand Cayman

   George Town, Grand Cayman is a scheduled port of call on day 2 of the 10-night Shimmering Reefs, Mighty Ruins Tampa Bay To Tampa Bay cruise on Seven Seas Mariner. Expected weather: partially cloudy with highs near 81°F.

3. Day 3 — Monday, Dec 14, 2026 — Montego Bay, Jamaica

   Montego Bay, Jamaica is a scheduled port of call on day 3 of the 10-night Shimmering Reefs, Mighty Ruins Tampa Bay To Tampa Bay cruise on Seven Seas Mariner. Expected weather: partially cloudy with highs near 85°F.

4. Day 4 — Wednesday, Dec 16, 2026 — Roatan, Honduras

   Roatan, Honduras is a scheduled port of call on day 4 of the 10-night Shimmering Reefs, Mighty Ruins Tampa Bay To Tampa Bay cruise on Seven Seas Mariner. Expected weather: partially cloudy with highs near 79°F.

5. Day 5 — Thursday, Dec 17, 2026 — Belize City, Belize

   Belize City, Belize is a scheduled port of call on day 5 of the 10-night Shimmering Reefs, Mighty Ruins Tampa Bay To Tampa Bay cruise on Seven Seas Mariner. Expected weather: partially cloudy with highs near 80°F.

6. Day 6 — Friday, Dec 18, 2026 — Costa Maya, Mexico

   Costa Maya, Mexico is a scheduled port of call on day 6 of the 10-night Shimmering Reefs, Mighty Ruins Tampa Bay To Tampa Bay cruise on Seven Seas Mariner. Expected weather: partially cloudy with highs near 80°F.

7. Day 7 — Saturday, Dec 19, 2026 — Cozumel, Mexico

   Cozumel, Mexico is a scheduled port of call on day 7 of the 10-night Shimmering Reefs, Mighty Ruins Tampa Bay To Tampa Bay cruise on Seven Seas Mariner. Expected weather: partially cloudy with highs near 79°F.

8. Day 8 — Monday, Dec 21, 2026 — Tampa, Florida

   Tampa, Florida is a scheduled port of call on day 8 of the 10-night Shimmering Reefs, Mighty Ruins Tampa Bay To Tampa Bay cruise on Seven Seas Mariner. Expected weather: partially cloudy with highs near 75°F.