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Loading Travel Forecast…Loading Travel Forecast…Loading Travel Forecast…The Celebrity Constellation sails a 7-night Southern Caribbean itinerary with Celebrity Cruises, departing San Juan, Puerto Rico on December 26, 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, St Thomas, US Virgin Islands, Philipsburg, St. Maarten, with 4 more along the way. Use the day-by-day forecast below to plan what to pack for each stop.
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.
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 78°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 79°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 79°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.
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 80°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 79°F.
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