Your Cruise, Your Weather
Affiliate Partner
Book Your Next Cruise
Looking to book your next cruise? Our affiliate partners offer competitive rates — plus by booking through them you support our free service.
Silly bot, you don't need weather
Departing Seattle, Washington on September 19, 2026, the Princess Cruises ship Royal Princess runs this 26-night Southeast Asia, Japan & Alaska Grand Adventure 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 Seattle, Washington, Juneau, Alaska, Hubbard Glacier, Alaska, with 8 more along the way. Scroll the daily outlook below to pack smart for every port of call.
Seattle, Washington is a scheduled port of call on day 1 of the 26-night Southeast Asia, Japan & Alaska Grand Adventure cruise on Royal Princess.
Juneau, Alaska is a scheduled port of call on day 2 of the 26-night Southeast Asia, Japan & Alaska Grand Adventure cruise on Royal Princess.
Hubbard Glacier, Alaska is a scheduled port of call on day 3 of the 26-night Southeast Asia, Japan & Alaska Grand Adventure cruise on Royal Princess.
Whittier, Alaska is a scheduled port of call on day 4 of the 26-night Southeast Asia, Japan & Alaska Grand Adventure cruise on Royal Princess.
Tokyo, Japan is a scheduled port of call on day 5 of the 26-night Southeast Asia, Japan & Alaska Grand Adventure cruise on Royal Princess.
Shimizu, Japan is a scheduled port of call on day 6 of the 26-night Southeast Asia, Japan & Alaska Grand Adventure cruise on Royal Princess.
Kobe/Osaka, Japan is a scheduled port of call on day 7 of the 26-night Southeast Asia, Japan & Alaska Grand Adventure cruise on Royal Princess.
Keelung, Taiwan is a scheduled port of call on day 8 of the 26-night Southeast Asia, Japan & Alaska Grand Adventure cruise on Royal Princess.
Hong Kong, China is a scheduled port of call on day 9 of the 26-night Southeast Asia, Japan & Alaska Grand Adventure cruise on Royal Princess.
Da Nang, Vietnam is a scheduled port of call on day 10 of the 26-night Southeast Asia, Japan & Alaska Grand Adventure cruise on Royal Princess.
Singapore is a scheduled port of call on day 11 of the 26-night Southeast Asia, Japan & Alaska Grand Adventure cruise on Royal Princess.
Looking to book your next cruise? Our affiliate partners offer competitive rates — plus by booking through them you support our free service.
We may earn a commission when you book through Viator links below, at no extra cost to you.
Mt. Rainier National Park Highlights Tour
On this full-day tour of Washington State’s Mt Rainier, you’ll visit the majestic 14,411-foot (4,392-m) volcano and lear...
We may earn a commission from bookings — at no extra cost to you.
Beneath The Streets Underground History Tour
Go underground on a 1-hour walking history tour through Seattle's original neighborhood. Our experienced guides lead sma...
We may earn a commission from bookings — at no extra cost to you.
Mendenhall Glacier Waterfall and Whale Watching Tour
Although we are the original whale-watching company in Juneau (operating since 1994), we are still small and family-owne...
We may earn a commission from bookings — at no extra cost to you.
Mendenhall Glacier Trolley Tour
Specially designed for guests coming on cruise ships! This is a 3 hour Tour. We meet at the downtown cruise ship dock. E...
We may earn a commission from bookings — at no extra cost to you.