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Loading Travel Forecast…Loading Travel Forecast…Loading Travel Forecast…Join Royal Caribbean Cruises's Brilliance Of The Seas for a 7-night voyage on the Southern Caribbean Cruise route, setting out from San Juan, Puerto Rico on December 13, 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, St Croix, US Virgin Islands, with 4 more along the way. The forecasts below break the weather down port by port.
San Juan, Puerto Rico is a scheduled port of call on day 1 of the 7-night Southern Caribbean Cruise cruise on Brilliance Of The Seas. 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 cruise on Brilliance Of The Seas. Expected weather: partially cloudy with highs near 79°F.
St Croix, US Virgin Islands is a scheduled port of call on day 3 of the 7-night Southern Caribbean Cruise cruise on Brilliance Of The Seas. Expected weather: partially cloudy with highs near 79°F.
Philipsburg, St. Maarten is a scheduled port of call on day 4 of the 7-night Southern Caribbean Cruise cruise on Brilliance Of The Seas. Expected weather: partially cloudy with highs near 80°F.
St Johns, Antigua is a scheduled port of call on day 5 of the 7-night Southern Caribbean Cruise cruise on Brilliance Of The Seas. Expected weather: partially cloudy with highs near 79°F.
Roseau, Dominica is a scheduled port of call on day 6 of the 7-night Southern Caribbean Cruise cruise on Brilliance Of The Seas. Expected weather: partially cloudy with highs near 77°F.
San Juan, Puerto Rico is a scheduled port of call on day 7 of the 7-night Southern Caribbean Cruise cruise on Brilliance Of The Seas. Expected weather: partially cloudy with highs near 80°F.
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