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Loading Travel Forecast…Loading Travel Forecast…Loading Travel Forecast…The Sapphire Princess sails a 42-night Japan & Southeast Asia Grand Adventure itinerary with Princess Cruises, departing Singapore on December 26, 2026. It's a classic Asia cruise. Travelers sailing in December can generally expect cooler, off-season conditions. Ports of call include Singapore, Laem Chabang, Thailand, Laem Chabang, Thailand, with 23 more along the way. Use the day-by-day forecast below to plan what to pack for each stop.
Singapore is a scheduled port of call on day 1 of the 42-night Japan & Southeast Asia Grand Adventure cruise on Sapphire Princess. Expected weather: overcast with highs near 81°F.
Day 2 of 43 is a day at sea aboard Sapphire Princess, cruising between ports on the Japan & Southeast Asia Grand Adventure itinerary.
Laem Chabang, Thailand is a scheduled port of call on day 3 of the 42-night Japan & Southeast Asia Grand Adventure cruise on Sapphire Princess. Expected weather: partially cloudy with highs near 88°F.
Laem Chabang, Thailand is a scheduled port of call on day 4 of the 42-night Japan & Southeast Asia Grand Adventure cruise on Sapphire Princess. Expected weather: partially cloudy with highs near 89°F.
Ko Samui, Thailand is a scheduled port of call on day 5 of the 42-night Japan & Southeast Asia Grand Adventure cruise on Sapphire Princess. Expected weather: partially cloudy with highs near 78°F.
Sihanoukville, Cambodia is a scheduled port of call on day 6 of the 42-night Japan & Southeast Asia Grand Adventure cruise on Sapphire Princess. Expected weather: partially cloudy with highs near 88°F.
Day 7 of 43 is a day at sea aboard Sapphire Princess, cruising between ports on the Japan & Southeast Asia Grand Adventure itinerary.
Ho Chi Minh City, Vietnam is a scheduled port of call on day 8 of the 42-night Japan & Southeast Asia Grand Adventure cruise on Sapphire Princess. Expected weather: partially cloudy with highs near 85°F.
Day 9 of 43 is a day at sea aboard Sapphire Princess, cruising between ports on the Japan & Southeast Asia Grand Adventure itinerary.
Day 10 of 43 is a day at sea aboard Sapphire Princess, cruising between ports on the Japan & Southeast Asia Grand Adventure itinerary.
Penang, Malaysia is a scheduled port of call on day 11 of the 42-night Japan & Southeast Asia Grand Adventure cruise on Sapphire Princess. Expected weather: partially cloudy with highs near 89°F.
Phuket, Thailand is a scheduled port of call on day 12 of the 42-night Japan & Southeast Asia Grand Adventure cruise on Sapphire Princess. Expected weather: partially cloudy with highs near 83°F.
Langkawi, Malaysia is a scheduled port of call on day 13 of the 42-night Japan & Southeast Asia Grand Adventure cruise on Sapphire Princess. Expected weather: partially cloudy with highs near 83°F.
Klang, Malaysia is a scheduled port of call on day 14 of the 42-night Japan & Southeast Asia Grand Adventure cruise on Sapphire Princess. Expected weather: partially cloudy with highs near 86°F.
Singapore is a scheduled port of call on day 15 of the 42-night Japan & Southeast Asia Grand Adventure cruise on Sapphire Princess. Expected weather: partially cloudy with highs near 81°F.
Day 16 of 43 is a day at sea aboard Sapphire Princess, cruising between ports on the Japan & Southeast Asia Grand Adventure itinerary.
Nha Trang, Vietnam is a scheduled port of call on day 17 of the 42-night Japan & Southeast Asia Grand Adventure cruise on Sapphire Princess.
Day 18 of 43 is a day at sea aboard Sapphire Princess, cruising between ports on the Japan & Southeast Asia Grand Adventure itinerary.
Halong Bay, Vietnam is a scheduled port of call on day 19 of the 42-night Japan & Southeast Asia Grand Adventure cruise on Sapphire Princess.
Halong Bay, Vietnam is a scheduled port of call on day 20 of the 42-night Japan & Southeast Asia Grand Adventure cruise on Sapphire Princess.
Day 21 of 43 is a day at sea aboard Sapphire Princess, cruising between ports on the Japan & Southeast Asia Grand Adventure itinerary.
Hong Kong, China is a scheduled port of call on day 22 of the 42-night Japan & Southeast Asia Grand Adventure cruise on Sapphire Princess.
Day 23 of 43 is a day at sea aboard Sapphire Princess, cruising between ports on the Japan & Southeast Asia Grand Adventure itinerary.
Keelung, Taiwan is a scheduled port of call on day 24 of the 42-night Japan & Southeast Asia Grand Adventure cruise on Sapphire Princess.
Miyakojima, Japan is a scheduled port of call on day 25 of the 42-night Japan & Southeast Asia Grand Adventure cruise on Sapphire Princess.
Day 26 of 43 is a day at sea aboard Sapphire Princess, cruising between ports on the Japan & Southeast Asia Grand Adventure itinerary.
Nagasaki, Japan is a scheduled port of call on day 27 of the 42-night Japan & Southeast Asia Grand Adventure cruise on Sapphire Princess.
Day 28 of 43 is a day at sea aboard Sapphire Princess, cruising between ports on the Japan & Southeast Asia Grand Adventure itinerary.
Tokyo, Japan is a scheduled port of call on day 29 of the 42-night Japan & Southeast Asia Grand Adventure cruise on Sapphire Princess.
Day 30 of 43 is a day at sea aboard Sapphire Princess, cruising between ports on the Japan & Southeast Asia Grand Adventure itinerary.
Kagoshima, Japan is a scheduled port of call on day 31 of the 42-night Japan & Southeast Asia Grand Adventure cruise on Sapphire Princess.
Day 32 of 43 is a day at sea aboard Sapphire Princess, cruising between ports on the Japan & Southeast Asia Grand Adventure itinerary.
Naha, Japan is a scheduled port of call on day 33 of the 42-night Japan & Southeast Asia Grand Adventure cruise on Sapphire Princess.
Day 34 of 43 is a day at sea aboard Sapphire Princess, cruising between ports on the Japan & Southeast Asia Grand Adventure itinerary.
Kaohsiung, Taiwan is a scheduled port of call on day 35 of the 42-night Japan & Southeast Asia Grand Adventure cruise on Sapphire Princess.
Day 36 of 43 is a day at sea aboard Sapphire Princess, cruising between ports on the Japan & Southeast Asia Grand Adventure itinerary.
Hong Kong, China is a scheduled port of call on day 37 of the 42-night Japan & Southeast Asia Grand Adventure cruise on Sapphire Princess.
Day 38 of 43 is a day at sea aboard Sapphire Princess, cruising between ports on the Japan & Southeast Asia Grand Adventure itinerary.
Da Nang, Vietnam is a scheduled port of call on day 39 of the 42-night Japan & Southeast Asia Grand Adventure cruise on Sapphire Princess.
Day 40 of 43 is a day at sea aboard Sapphire Princess, cruising between ports on the Japan & Southeast Asia Grand Adventure itinerary.
Ho Chi Minh City, Vietnam is a scheduled port of call on day 41 of the 42-night Japan & Southeast Asia Grand Adventure cruise on Sapphire Princess.
Day 42 of 43 is a day at sea aboard Sapphire Princess, cruising between ports on the Japan & Southeast Asia Grand Adventure itinerary.
Singapore is a scheduled port of call on day 43 of the 42-night Japan & Southeast Asia Grand Adventure cruise on Sapphire Princess.
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