Your Cruise, Your Weather
Plan Your Cruise With Free Weather Forecasts
Loading Travel Forecast…Loading Travel Forecast…Loading Travel Forecast…The Celebrity Ascent sails a 10-night Ultimate Southern Caribbean itinerary with Celebrity Cruises, departing Fort Lauderdale, Florida on December 4, 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 Fort Lauderdale, Florida, Philipsburg, St. Maarten, Castries, St Lucia, with 4 more along the way. Use the day-by-day forecast below to plan what to pack for each stop.
Fort Lauderdale, Florida is a scheduled port of call on day 1 of the 10-night Ultimate Southern Caribbean cruise on Celebrity Ascent. Expected weather: partially cloudy with highs near 76°F.
Philipsburg, St. Maarten is a scheduled port of call on day 2 of the 10-night Ultimate Southern Caribbean cruise on Celebrity Ascent. Expected weather: partially cloudy with highs near 80°F.
Castries, St Lucia is a scheduled port of call on day 3 of the 10-night Ultimate Southern Caribbean cruise on Celebrity Ascent. Expected weather: partially cloudy with highs near 81°F.
St Georges, Grenada is a scheduled port of call on day 4 of the 10-night Ultimate Southern Caribbean cruise on Celebrity Ascent. Expected weather: partially cloudy with highs near 80°F.
Bridgetown, Barbados is a scheduled port of call on day 5 of the 10-night Ultimate Southern Caribbean cruise on Celebrity Ascent. Expected weather: partially cloudy with highs near 81°F.
St Johns, Antigua is a scheduled port of call on day 6 of the 10-night Ultimate Southern Caribbean cruise on Celebrity Ascent. Expected weather: partially cloudy with highs near 80°F.
Fort Lauderdale, Florida is a scheduled port of call on day 7 of the 10-night Ultimate Southern Caribbean cruise on Celebrity Ascent. Expected weather: partially cloudy with highs near 76°F.
Compare rates and find your next sailing.