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Loading Travel Forecast…Loading Travel Forecast…Loading Travel Forecast…Departing San Juan, Puerto Rico on December 5, 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, St Thomas, US Virgin Islands, Philipsburg, St. Maarten, 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 81°F.
St Thomas, US 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 79°F.
Philipsburg, St. Maarten 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 80°F.
St Johns, Antigua 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 80°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 81°F.
Bridgetown, Barbados 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 81°F.
Day 7 of 8 is a day at sea aboard Celebrity Constellation, cruising between ports on the Southern Caribbean itinerary.
San Juan, Puerto Rico is a scheduled port of call on day 8 of the 7-night Southern Caribbean cruise on Celebrity Constellation. Expected weather: partially cloudy with highs near 80°F.
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