MyCruiseForecast

Royal Caribbean · 7 nights

Symphony of the Seas weather: 7-night cruise from Galveston, December 20, 2026

The Symphony of the Seas (Royal Caribbean) leaves Galveston on December 20, 2026 for a 7-night cruise, with stops in Costa Maya, Roatán and Cozumel. It returns to Galveston on December 27, 2026. Typical afternoon highs along the route run from 61°F to 80°F (16°C to 27°C), and 3 days are at sea, where seas are typically slight (around 3 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 20Galveston Embark61 / 54°F16 / 12°C27%19 mph31 km/h–
Day 2Mon, Dec 21At sea71 / 63°F22 / 17°C42%11 mph18 km/h3 ft (0.9 m)Slight; rougher days up to 5 ft
Day 3Tue, Dec 22At sea71 / 63°F22 / 17°C42%11 mph18 km/h3 ft (0.9 m)Slight; rougher days up to 5 ft
Day 4Wed, Dec 23Costa Maya80 / 72°F27 / 22°C56%11 mph18 km/h–
Day 5Thu, Dec 24Roatán80 / 76°F27 / 25°C77%17 mph28 km/h–
Day 6Fri, Dec 25Cozumel80 / 72°F27 / 22°C58%11 mph18 km/h–
Day 7Sat, Dec 26At sea71 / 63°F21 / 17°C43%11 mph18 km/h2 ft (0.7 m)Slight; rougher days up to 4 ft
Day 8Sun, Dec 27Galveston Disembark61 / 54°F16 / 12°C27%19 mph31 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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