6-Night Cruise on Norwegian StarMexican Riviera Round-trip San Diego: Cabo & Puerto Vallarta - Weather

Departing San Diego, California on December 20, 2026, the Norwegian Cruise Line (NCL) ship Norwegian Star runs this 6-night Mexican Riviera Round-trip San Diego: Cabo & Puerto Vallarta sailing. It's a classic Mexican Riviera cruise. Travelers sailing in December can generally expect warm, dry, and reliably sunny Pacific-coast weather. Ports of call include San Diego, California, Puerto Vallarta, Mexico, Cabo San Lucas, Mexico, with 1 more along the way. Scroll the daily outlook below to pack smart for every port of call.

1. Day 1 — Sunday, Dec 20, 2026 — San Diego, California

   San Diego, California is a scheduled port of call on day 1 of the 6-night Mexican Riviera Round-trip San Diego: Cabo & Puerto Vallarta cruise on Norwegian Star. Expected weather: partially cloudy with highs near 62°F.

2. Day 2 — Monday, Dec 21, 2026 — At Sea

   Day 2 of 7 is a day at sea aboard Norwegian Star, cruising between ports on the Mexican Riviera Round-trip San Diego: Cabo & Puerto Vallarta itinerary.

3. Day 3 — Tuesday, Dec 22, 2026 — At Sea

   Day 3 of 7 is a day at sea aboard Norwegian Star, cruising between ports on the Mexican Riviera Round-trip San Diego: Cabo & Puerto Vallarta itinerary.

4. Day 4 — Wednesday, Dec 23, 2026 — Puerto Vallarta, Mexico

   Puerto Vallarta, Mexico is a scheduled port of call on day 4 of the 6-night Mexican Riviera Round-trip San Diego: Cabo & Puerto Vallarta cruise on Norwegian Star. Expected weather: partially cloudy with highs near 77°F.

5. Day 5 — Thursday, Dec 24, 2026 — Cabo San Lucas, Mexico

   Cabo San Lucas, Mexico is a scheduled port of call on day 5 of the 6-night Mexican Riviera Round-trip San Diego: Cabo & Puerto Vallarta cruise on Norwegian Star. Expected weather: partially cloudy with highs near 75°F.

6. Day 6 — Friday, Dec 25, 2026 — At Sea

   Day 6 of 7 is a day at sea aboard Norwegian Star, cruising between ports on the Mexican Riviera Round-trip San Diego: Cabo & Puerto Vallarta itinerary.

7. Day 7 — Saturday, Dec 26, 2026 — San Diego, California

   San Diego, California is a scheduled port of call on day 7 of the 6-night Mexican Riviera Round-trip San Diego: Cabo & Puerto Vallarta cruise on Norwegian Star. Expected weather: partially cloudy with highs near 61°F.