Royal Caribbean · 7 nights

Mariner of the Seas weather: 7-night cruise from New Orleans, December 12, 2026

The Mariner of the Seas (Royal Caribbean) leaves New Orleans on December 12, 2026 for a 7-night cruise, with stops in Cozumel, George Town and Falmouth (Jamaica). It returns to New Orleans on December 19, 2026. Typical afternoon highs along the route run from 62°F to 83°F (17°C to 29°C), and 3 days are at sea, where seas are typically slight (around 4 ft).

Open the interactive forecast for this sailing

This page shows typical conditions for these dates. The interactive forecast adds a live day-by-day forecast, wave heights and weather alerts as the sailing gets closer.

Day-by-day itinerary and typical weather

Typical conditions for each date (2022–2025 climate record, ECMWF). Sea-day figures are approximate, blended from the ports on either side. Not a forecast.
Day	Port	High / low	Rain days	Wind	Typical seas
Day 1Sat, Dec 12	New Orleans Embark	67 / 54°F20 / 12°C	20%	11 mph17 km/h	–
Day 2Sun, Dec 13	At sea	75 / 65°F24 / 18°C	34%	9 mph15 km/h	3 ft (1.0 m)Slight; rougher days up to 6 ft
Day 3Mon, Dec 14	Cozumel	82 / 76°F28 / 24°C	47%	14 mph22 km/h	–
Day 4Tue, Dec 15	George Town	83 / 78°F28 / 26°C	44%	20 mph32 km/h	–
Day 5Wed, Dec 16	Falmouth (Jamaica)	83 / 72°F29 / 22°C	27%	11 mph17 km/h	–
Day 6Thu, Dec 17	At sea	73 / 61°F23 / 16°C	27%	8 mph13 km/h	4 ft (1.2 m)Slight; rougher days up to 7 ft
Day 7Fri, Dec 18	At sea	73 / 61°F23 / 16°C	27%	8 mph13 km/h	4 ft (1.2 m)Slight; rougher days up to 7 ft
Day 8Sat, Dec 19	New Orleans Disembark	62 / 49°F17 / 10°C	27%	11 mph18 km/h	–

Seas are significant wave height, the average of the highest third of waves, on the Douglas sea state scale. What that means on board.

Ports on this cruise

More Mariner of the Seas sailings

December 19, 2026: 7 nights from New Orleans
December 26, 2026: 7 nights from New Orleans

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