MyCruiseForecast

Royal Caribbean · 7 nights

Allure of the Seas weather: 7-night cruise from Miami, December 20, 2026

The Allure of the Seas (Royal Caribbean) leaves Miami on December 20, 2026 for a 7-night cruise, with stops in Amber Cove, San Juan and St. Thomas. It returns to Miami on December 27, 2026. Typical afternoon highs along the route run from 74°F to 82°F (24°C to 28°C), and 3 days are at sea, where seas are typically moderate (around 5 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.
DayPortHigh / lowRain daysWindTypical seas
Day 1Sun, Dec 20Miami Embark74 / 65°F24 / 18°C54%13 mph21 km/h–
Day 2Mon, Dec 21At sea77 / 68°F25 / 20°C48%9 mph15 km/h5 ft (1.5 m)Moderate; rougher days up to 7 ft
Day 3Tue, Dec 22Amber Cove80 / 71°F27 / 22°C42%11 mph18 km/h–
Day 4Wed, Dec 23San Juan82 / 73°F28 / 23°C54%14 mph22 km/h–
Day 5Thu, Dec 24St. Thomas81 / 77°F27 / 25°C38%19 mph30 km/h–
Day 6Fri, Dec 25At sea78 / 71°F25 / 22°C46%12 mph19 km/h4 ft (1.2 m)Slight; rougher days up to 6 ft
Day 7Sat, Dec 26At sea78 / 71°F25 / 22°C46%12 mph19 km/h4 ft (1.2 m)Slight; rougher days up to 6 ft
Day 8Sun, Dec 27Miami Disembark74 / 65°F24 / 18°C54%13 mph21 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

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