7-Night Cruise on Radiance Of The SeasSouthern Caribbean Cruise - Weather

Departing San Juan, Puerto Rico on October 3, 2026, the Royal Caribbean Cruises ship Radiance Of The Seas runs this 7-night Southern Caribbean Cruise sailing. It's a classic Caribbean cruise. Travelers sailing in October 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. Scroll the daily outlook below to pack smart for every port of call.

1. Day 1 — Saturday, Oct 3, 2026 — San Juan, Puerto Rico

   San Juan, Puerto Rico is a scheduled port of call on day 1 of the 7-night Southern Caribbean Cruise cruise on Radiance Of The Seas. Expected weather: partially cloudy with highs near 84°F.

2. Day 2 — Sunday, Oct 4, 2026 — St Thomas, US Virgin Islands

   St Thomas, US Virgin Islands is a scheduled port of call on day 2 of the 7-night Southern Caribbean Cruise cruise on Radiance Of The Seas. Expected weather: partially cloudy with highs near 82°F.

3. Day 3 — Monday, Oct 5, 2026 — St Croix, US Virgin Islands

   St Croix, US Virgin Islands is a scheduled port of call on day 3 of the 7-night Southern Caribbean Cruise cruise on Radiance Of The Seas. Expected weather: partially cloudy with highs near 83°F.

4. Day 4 — Tuesday, Oct 6, 2026 — Philipsburg, St. Maarten

   Philipsburg, St. Maarten is a scheduled port of call on day 4 of the 7-night Southern Caribbean Cruise cruise on Radiance Of The Seas. Expected weather: partially cloudy with highs near 83°F.

5. Day 5 — Wednesday, Oct 7, 2026 — St Johns, Antigua

   St Johns, Antigua is a scheduled port of call on day 5 of the 7-night Southern Caribbean Cruise cruise on Radiance Of The Seas. Expected weather: partially cloudy with highs near 83°F.

6. Day 6 — Thursday, Oct 8, 2026 — Roseau, Dominica

   Roseau, Dominica is a scheduled port of call on day 6 of the 7-night Southern Caribbean Cruise cruise on Radiance Of The Seas. Expected weather: partially cloudy with highs near 80°F.

7. Day 7 — Saturday, Oct 10, 2026 — San Juan, Puerto Rico

   San Juan, Puerto Rico is a scheduled port of call on day 7 of the 7-night Southern Caribbean Cruise cruise on Radiance Of The Seas. Expected weather: partially cloudy with highs near 84°F.