7-Night Cruise on Norwegian PrimaCaribbean Round-Trip San Juan: St. Thomas & Tortola - Weather

The Norwegian Prima sails a 7-night Caribbean Round-Trip San Juan: St. Thomas & Tortola itinerary with Norwegian Cruise Line (NCL), departing San Juan, Puerto Rico on December 20, 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 San Juan, Puerto Rico, Oranjestad, Aruba, Willemstad, Curacao, with 3 more along the way. Use the day-by-day forecast below to plan what to pack for each stop.

1. Day 1 — Sunday, Dec 20, 2026 — San Juan, Puerto Rico

   San Juan, Puerto Rico is a scheduled port of call on day 1 of the 7-night Caribbean Round-Trip San Juan: St. Thomas & Tortola cruise on Norwegian Prima. Expected weather: partially cloudy with highs near 80°F.

2. Day 2 — Monday, Dec 21, 2026 — At Sea

   Day 2 of 8 is a day at sea aboard Norwegian Prima, cruising between ports on the Caribbean Round-Trip San Juan: St. Thomas & Tortola itinerary.

3. Day 3 — Tuesday, Dec 22, 2026 — Oranjestad, Aruba

   Oranjestad, Aruba is a scheduled port of call on day 3 of the 7-night Caribbean Round-Trip San Juan: St. Thomas & Tortola cruise on Norwegian Prima. Expected weather: partially cloudy with highs near 81°F.

4. Day 4 — Wednesday, Dec 23, 2026 — Willemstad, Curacao

   Willemstad, Curacao is a scheduled port of call on day 4 of the 7-night Caribbean Round-Trip San Juan: St. Thomas & Tortola cruise on Norwegian Prima. Expected weather: partially cloudy with highs near 80°F.

5. Day 5 — Thursday, Dec 24, 2026 — At Sea

   Day 5 of 8 is a day at sea aboard Norwegian Prima, cruising between ports on the Caribbean Round-Trip San Juan: St. Thomas & Tortola itinerary.

6. Day 6 — Friday, Dec 25, 2026 — St Thomas, US Virgin Islands

   St Thomas, US Virgin Islands is a scheduled port of call on day 6 of the 7-night Caribbean Round-Trip San Juan: St. Thomas & Tortola cruise on Norwegian Prima. Expected weather: partially cloudy with highs near 78°F.

7. Day 7 — Saturday, Dec 26, 2026 — Tortola, British Virgin Islands

   Tortola, British Virgin Islands is a scheduled port of call on day 7 of the 7-night Caribbean Round-Trip San Juan: St. Thomas & Tortola cruise on Norwegian Prima. Expected weather: partially cloudy with highs near 79°F.

8. Day 8 — Sunday, Dec 27, 2026 — San Juan, Puerto Rico

   San Juan, Puerto Rico is a scheduled port of call on day 8 of the 7-night Caribbean Round-Trip San Juan: St. Thomas & Tortola cruise on Norwegian Prima. Expected weather: partially cloudy with highs near 80°F.