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Loading Travel Forecast…Loading Travel Forecast…Loading Travel Forecast…The Ruby Princess sails a 11-night Mexican Riviera Holiday itinerary with Princess Cruises, departing San Francisco, California on December 15, 2026. 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 Francisco, California, Manzanillo, Mexico, Puerto Vallarta, Mexico, with 3 more along the way. Use the day-by-day forecast below to plan what to pack for each stop.
San Francisco, California is a scheduled port of call on day 1 of the 11-night Mexican Riviera Holiday cruise on Ruby Princess. Expected weather: partially cloudy with highs near 58°F.
Day 2 of 12 is a day at sea aboard Ruby Princess, cruising between ports on the Mexican Riviera Holiday itinerary.
Day 3 of 12 is a day at sea aboard Ruby Princess, cruising between ports on the Mexican Riviera Holiday itinerary.
Day 4 of 12 is a day at sea aboard Ruby Princess, cruising between ports on the Mexican Riviera Holiday itinerary.
Manzanillo, Mexico is a scheduled port of call on day 5 of the 11-night Mexican Riviera Holiday cruise on Ruby Princess. Expected weather: partially cloudy with highs near 83°F.
Puerto Vallarta, Mexico is a scheduled port of call on day 6 of the 11-night Mexican Riviera Holiday cruise on Ruby Princess. Expected weather: partially cloudy with highs near 77°F.
Mazatlan, Mexico is a scheduled port of call on day 7 of the 11-night Mexican Riviera Holiday cruise on Ruby Princess. Expected weather: partially cloudy with highs near 77°F.
Cabo San Lucas, Mexico is a scheduled port of call on day 8 of the 11-night Mexican Riviera Holiday cruise on Ruby Princess. Expected weather: partially cloudy with highs near 76°F.
Day 9 of 12 is a day at sea aboard Ruby Princess, cruising between ports on the Mexican Riviera Holiday itinerary.
Day 10 of 12 is a day at sea aboard Ruby Princess, cruising between ports on the Mexican Riviera Holiday itinerary.
Day 11 of 12 is a day at sea aboard Ruby Princess, cruising between ports on the Mexican Riviera Holiday itinerary.
San Francisco, California is a scheduled port of call on day 12 of the 11-night Mexican Riviera Holiday cruise on Ruby Princess. Expected weather: partially cloudy with highs near 57°F.
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