MSC Cruises · 7 nights
MSC Seaside weather: 7-night cruise from Miami, December 21, 2026
The MSC Seaside (MSC Cruises) leaves Miami on December 21, 2026 for a 7-night cruise, with stops in Amber Cove, San Juan and Ocean Cay MSC Marine Reserve. It returns to Miami on December 28, 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
| Day | Port | High / low | Rain days | Wind | Typical seas |
|---|---|---|---|---|---|
| Day 1Mon, Dec 21 | Miami Embark | 74 / 65°F24 / 18°C | 54% | 13 mph21 km/h | – |
| Day 2Tue, Dec 22 | At sea | 77 / 68°F25 / 20°C | 48% | 9 mph15 km/h | 5 ft (1.5 m)Moderate; rougher days up to 7 ft |
| Day 3Wed, Dec 23 | Amber Cove | 80 / 71°F27 / 22°C | 42% | 11 mph18 km/h | – |
| Day 4Thu, Dec 24 | San Juan | 82 / 73°F28 / 23°C | 54% | 14 mph22 km/h | – |
| Day 5Fri, Dec 25 | At sea | 79 / 73°F26 / 23°C | 48% | 12 mph20 km/h | 5 ft (1.4 m)Moderate; rougher days up to 6 ft |
| Day 6Sat, Dec 26 | At sea | 79 / 73°F26 / 23°C | 48% | 12 mph20 km/h | 5 ft (1.4 m)Moderate; rougher days up to 6 ft |
| Day 7Sun, Dec 27 | Ocean Cay MSC Marine Reserve | 76 / 72°F24 / 22°C | 41% | 19 mph31 km/h | – |
| Day 8Mon, Dec 28 | Miami Disembark | 74 / 65°F24 / 18°C | 54% | 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
- Amber CoveWeather by month
- San JuanWeather by month
- Ocean Cay MSC Marine ReserveWeather by month
- MiamiWeather by month
More MSC Seaside sailings
- December 28, 2026: 11 nights from Miami