Your Cruise, Your Weather
Plan Your Cruise With Free Weather Forecasts
Loading Travel Forecast…Loading Travel Forecast…Loading Travel Forecast…The MSC Poesia sails a 7-night Alaska itinerary with MSC Cruises, departing Seattle, Washington on September 21, 2026. 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, Ketchikan, Alaska, Sitka, Alaska, with 3 more along the way. Use the day-by-day forecast below to plan what to pack for each stop.
Seattle, Washington is a scheduled port of call on day 1 of the 7-night Alaska cruise on MSC Poesia. Expected weather: partially cloudy with highs near 67°F.
Ketchikan, Alaska is a scheduled port of call on day 2 of the 7-night Alaska cruise on MSC Poesia. Expected weather: rain, partially cloudy with highs near 56°F.
Sitka, Alaska is a scheduled port of call on day 3 of the 7-night Alaska cruise on MSC Poesia. Expected weather: rain, partially cloudy with highs near 56°F.
Tracy Arm/Endicott Arm, Alaska is a scheduled port of call on day 4 of the 7-night Alaska cruise on MSC Poesia. Expected weather: rain, partially cloudy with highs near 55°F.
Victoria, British Columbia is a scheduled port of call on day 5 of the 7-night Alaska cruise on MSC Poesia. Expected weather: partially cloudy with highs near 57°F.
Seattle, Washington is a scheduled port of call on day 6 of the 7-night Alaska cruise on MSC Poesia. Expected weather: partially cloudy with highs near 65°F.
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Most PopularBeneath The Streets Underground History Tour
From $32
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Budget PickSeattle Sailing Harbor Tour
From $39
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Most Popular3hr Private Custom Excursion in Ketchikan for up to 14 people
From $680
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Budget Pick2.5 Hour Tour in Ketchikan on the Tongass Trolley
From $85
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Most PopularSitka Sightseeing Tour including Fortress of the Bear and Totem Poles
From $100
Book NowPowered by Viator/Tripadvisor. Booking through our links may earn us a commission keeping this site free at no cost to you.
Powered by Viator/Tripadvisor. Booking through our links may earn us a commission keeping this site free at no cost to you.
Most PopularBeneath The Streets Underground History Tour
From $32
Book NowBudget PickSeattle Sailing Harbor Tour
From $39
Book NowPowered by Viator/Tripadvisor. Booking through our links may earn us a commission keeping this site free at no cost to you.
Seattle, Washington
Most PopularBeneath The Streets Underground History Tour
From $32
Book NowBudget PickSeattle Sailing Harbor Tour
From $39
Book NowKetchikan, Alaska
Most Popular3hr Private Custom Excursion in Ketchikan for up to 14 people
From $680
Book NowBudget Pick2.5 Hour Tour in Ketchikan on the Tongass Trolley
From $85
Book NowSitka, Alaska
Most PopularSitka Sightseeing Tour including Fortress of the Bear and Totem Poles
From $100
Book NowVictoria, British Columbia
Before you disembark Seattle, Washington
Short on time — quick options that fit before you head out.
Most PopularBeneath The Streets Underground History Tour
From $32
Book NowBudget PickSeattle Sailing Harbor Tour
From $39
Book NowPowered by Viator/Tripadvisor. Booking through our links may earn us a commission keeping this site free at no cost to you.
