7-Night Cruise on Marella DiscoveryTropical Isles - Weather

Join Marella Cruises's Marella Discovery for a 7-night voyage on the Tropical Isles route, setting out from La Romana, Dominican Republic on December 8, 2026. It's a classic Caribbean cruise. Travelers sailing in December can generally expect warm, sunny weather with gentle trade winds. Ports of call include La Romana, Dominican Republic, San Juan, Puerto Rico, San Juan, Puerto Rico, with 4 more along the way. The forecasts below break the weather down port by port.

1. Day 1 — Tuesday, Dec 8, 2026 — La Romana, Dominican Republic

   La Romana, Dominican Republic is a scheduled port of call on day 1 of the 7-night Tropical Isles cruise on Marella Discovery. Expected weather: partially cloudy with highs near 84°F.

2. Day 2 — Wednesday, Dec 9, 2026 — At Sea

   Day 2 of 8 is a day at sea aboard Marella Discovery, cruising between ports on the Tropical Isles itinerary.

3. Day 3 — Thursday, Dec 10, 2026 — San Juan, Puerto Rico

   San Juan, Puerto Rico is a scheduled port of call on day 3 of the 7-night Tropical Isles cruise on Marella Discovery. Expected weather: partially cloudy with highs near 80°F.

4. Day 4 — Friday, Dec 11, 2026 — San Juan, Puerto Rico

   San Juan, Puerto Rico is a scheduled port of call on day 4 of the 7-night Tropical Isles cruise on Marella Discovery. Expected weather: partially cloudy with highs near 80°F.

5. Day 5 — Saturday, Dec 12, 2026 — St Thomas, US Virgin Islands

   St Thomas, US Virgin Islands is a scheduled port of call on day 5 of the 7-night Tropical Isles cruise on Marella Discovery. Expected weather: partially cloudy with highs near 79°F.

6. Day 6 — Sunday, Dec 13, 2026 — St Croix, US Virgin Islands

   St Croix, US Virgin Islands is a scheduled port of call on day 6 of the 7-night Tropical Isles cruise on Marella Discovery. Expected weather: partially cloudy with highs near 80°F.

7. Day 7 — Monday, Dec 14, 2026 — Catalina Island, Dominican Republic

   Catalina Island, Dominican Republic is a scheduled port of call on day 7 of the 7-night Tropical Isles cruise on Marella Discovery. Expected weather: partially cloudy with highs near 80°F.

8. Day 8 — Tuesday, Dec 15, 2026 — La Romana, Dominican Republic

   La Romana, Dominican Republic is a scheduled port of call on day 8 of the 7-night Tropical Isles cruise on Marella Discovery. Expected weather: partially cloudy with highs near 83°F.