Royal Caribbean · 5 nights
Mariner of the Seas weather: 5-night cruise from Galveston, October 17, 2026
The Mariner of the Seas (Royal Caribbean) leaves Galveston on October 17, 2026 for a 5-night cruise, with stops in Costa Maya and Cozumel. It returns to Galveston on October 22, 2026. Typical afternoon highs along the route run from 76°F to 85°F (24°C to 29°C), and 2 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
| Day | Port | High / low | Rain days | Wind | Typical seas |
|---|---|---|---|---|---|
| Day 1Sat, Oct 17 | Galveston Embark | 76 / 69°F24 / 21°C | 27% | 19 mph31 km/h | – |
| Day 2Sun, Oct 18 | At sea | 80 / 73°F27 / 23°C | 47% | 12 mph19 km/h | 3 ft (1.0 m)Slight; rougher days up to 5 ft |
| Day 3Mon, Oct 19 | Costa Maya | 85 / 76°F29 / 24°C | 67% | 12 mph20 km/h | – |
| Day 4Tue, Oct 20 | Cozumel | 85 / 77°F29 / 25°C | 52% | 12 mph20 km/h | – |
| Day 5Wed, Oct 21 | At sea | 80 / 73°F27 / 23°C | 40% | 12 mph19 km/h | 3 ft (0.8 m)Slight; rougher days up to 4 ft |
| Day 6Thu, Oct 22 | Galveston Disembark | 76 / 69°F24 / 21°C | 27% | 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
More Mariner of the Seas sailings
- October 22, 2026: 4 nights from Galveston
- October 26, 2026: 4 nights from Galveston
- November 1, 2026: 6 nights from New Orleans
- November 7, 2026: 7 nights from New Orleans
- November 14, 2026: 7 nights from New Orleans
- November 21, 2026: 7 nights from New Orleans
All Mariner of the Seas sailings · All Royal Caribbean ships