MyCruiseForecast

Royal Caribbean · 4 nights

Mariner of the Seas weather: 4-night cruise from Galveston, October 8, 2026

The Mariner of the Seas (Royal Caribbean) leaves Galveston on October 8, 2026 for a 4-night cruise, with stops in Cozumel. It returns to Galveston on October 12, 2026. Typical afternoon highs along the route run from 81°F to 87°F (27°C to 31°C), and 2 days are at sea, where seas are typically slight (around 2 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 1Thu, Oct 8Galveston Embark81 / 74°F27 / 24°C20%17 mph27 km/h–
Day 2Fri, Oct 9At sea84 / 76°F29 / 25°C44%10 mph17 km/h2 ft (0.6 m)Slight; rougher days up to 4 ft
Day 3Sat, Oct 10Cozumel87 / 78°F31 / 26°C67%11 mph17 km/h–
Day 4Sun, Oct 11At sea84 / 76°F29 / 25°C44%10 mph17 km/h2 ft (0.6 m)Slight; rougher days up to 4 ft
Day 5Mon, Oct 12Galveston Disembark81 / 74°F27 / 24°C20%17 mph27 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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