
Plan Your Cruise With Free Weather Forecasts
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Loading Travel Forecast…Departing San Juan, Puerto Rico on December 12, 2026, the Celebrity Cruises ship Celebrity Constellation runs this 7-night Southern Caribbean sailing. 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, Tortola, British Virgin Islands, Basseterre, St. Kitts, with 4 more along the way. Scroll the daily outlook below to pack smart for every port of call.
San Juan, Puerto Rico is a scheduled port of call on day 1 of the 7-night Southern Caribbean cruise on Celebrity Constellation. Expected weather: partially cloudy with highs near 80°F.
Tortola, British Virgin Islands is a scheduled port of call on day 2 of the 7-night Southern Caribbean cruise on Celebrity Constellation. Expected weather: partially cloudy with highs near 80°F.
Basseterre, St. Kitts is a scheduled port of call on day 3 of the 7-night Southern Caribbean cruise on Celebrity Constellation. Expected weather: partially cloudy with highs near 81°F.
Roseau, Dominica is a scheduled port of call on day 4 of the 7-night Southern Caribbean cruise on Celebrity Constellation. Expected weather: partially cloudy with highs near 77°F.
Castries, St Lucia is a scheduled port of call on day 5 of the 7-night Southern Caribbean cruise on Celebrity Constellation. Expected weather: partially cloudy with highs near 80°F.
St Georges, Grenada is a scheduled port of call on day 6 of the 7-night Southern Caribbean cruise on Celebrity Constellation. Expected weather: partially cloudy with highs near 80°F.
San Juan, Puerto Rico is a scheduled port of call on day 7 of the 7-night Southern Caribbean cruise on Celebrity Constellation. Expected weather: partially cloudy with highs near 80°F.
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From $100
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Most PopularPrivate Full Day Charter: St Lucia Boat Tour to Soufriere
From $250
Book NowPowered by Viator/Tripadvisor. Booking through our links may earn us a commission keeping this site free at no cost to you.