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Loading Travel Forecast…Loading Travel Forecast…Loading Travel Forecast…Departing San Francisco, California on September 20, 2026, the Carnival Cruises ship Carnival Luminosa runs this 18-night Alaska & Japan Transpacific sailing. It's a classic Alaska cruise. Travelers sailing in September can generally expect cool days, crisp nights, and long hours of daylight typical of the Alaska cruise season — with rain never far off. Ports of call include San Francisco, California, Ketchikan, Alaska, Icy Strait Point, Alaska, with 6 more along the way. Scroll the daily outlook below to pack smart for every port of call.
San Francisco, California is a scheduled port of call on day 1 of the 18-night Alaska & Japan Transpacific cruise on Carnival Luminosa. Expected weather: partially cloudy with highs near 75°F.
Day 2 of 19 is a day at sea aboard Carnival Luminosa, cruising between ports on the Alaska & Japan Transpacific itinerary.
Day 3 of 19 is a day at sea aboard Carnival Luminosa, cruising between ports on the Alaska & Japan Transpacific itinerary.
Ketchikan, Alaska is a scheduled port of call on day 4 of the 18-night Alaska & Japan Transpacific cruise on Carnival Luminosa. Expected weather: partially cloudy with highs near 56°F.
Icy Strait Point, Alaska is a scheduled port of call on day 5 of the 18-night Alaska & Japan Transpacific cruise on Carnival Luminosa. Expected weather: partially cloudy with highs near 51°F.
Hubbard Glacier, Alaska is a scheduled port of call on day 6 of the 18-night Alaska & Japan Transpacific cruise on Carnival Luminosa. Expected weather: partially cloudy with highs near 41°F.
Day 7 of 19 is a day at sea aboard Carnival Luminosa, cruising between ports on the Alaska & Japan Transpacific itinerary.
Day 8 of 19 is a day at sea aboard Carnival Luminosa, cruising between ports on the Alaska & Japan Transpacific itinerary.
Day 9 of 19 is a day at sea aboard Carnival Luminosa, cruising between ports on the Alaska & Japan Transpacific itinerary.
Day 10 of 19 is a day at sea aboard Carnival Luminosa, cruising between ports on the Alaska & Japan Transpacific itinerary.
Day 11 of 19 is a day at sea aboard Carnival Luminosa, cruising between ports on the Alaska & Japan Transpacific itinerary.
Day 12 of 19 is a day at sea aboard Carnival Luminosa, cruising between ports on the Alaska & Japan Transpacific itinerary.
Day 13 of 19 is a day at sea aboard Carnival Luminosa, cruising between ports on the Alaska & Japan Transpacific itinerary.
Otaru, Japan is a scheduled port of call on day 14 of the 18-night Alaska & Japan Transpacific cruise on Carnival Luminosa. Expected weather: partially cloudy with highs near 64°F.
Aomori, Japan is a scheduled port of call on day 15 of the 18-night Alaska & Japan Transpacific cruise on Carnival Luminosa. Expected weather: partially cloudy with highs near 70°F.
Day 16 of 19 is a day at sea aboard Carnival Luminosa, cruising between ports on the Alaska & Japan Transpacific itinerary.
Shimizu, Japan is a scheduled port of call on day 17 of the 18-night Alaska & Japan Transpacific cruise on Carnival Luminosa.
Kobe/Osaka, Japan is a scheduled port of call on day 18 of the 18-night Alaska & Japan Transpacific cruise on Carnival Luminosa.
Day 19 of 19 is a day at sea aboard Carnival Luminosa, cruising between ports on the Alaska & Japan Transpacific itinerary.
Tokyo, Japan is a scheduled port of call on day 20 of the 18-night Alaska & Japan Transpacific cruise on Carnival Luminosa.
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