Your Cruise, Your Weather
Plan Your Cruise With Free Weather Forecasts
Loading Travel Forecast…Loading Travel Forecast…Loading Travel Forecast…Join MSC Cruises's MSC Poesia for a 26-night voyage on the MSC Grand Voyages route, setting out from 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 11 more along the way. The forecasts below break the weather down port by port.
Seattle, Washington is a scheduled port of call on day 1 of the 26-night MSC Grand Voyages 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 26-night MSC Grand Voyages 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 26-night MSC Grand Voyages 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 26-night MSC Grand Voyages 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 26-night MSC Grand Voyages 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 26-night MSC Grand Voyages cruise on MSC Poesia. Expected weather: partially cloudy with highs near 65°F.
Los Angeles, California is a scheduled port of call on day 7 of the 26-night MSC Grand Voyages cruise on MSC Poesia. Expected weather: partially cloudy with highs near 79°F.
San Diego, California is a scheduled port of call on day 8 of the 26-night MSC Grand Voyages cruise on MSC Poesia. Expected weather: partially cloudy with highs near 72°F.
Cabo San Lucas, Mexico is a scheduled port of call on day 9 of the 26-night MSC Grand Voyages cruise on MSC Poesia. Expected weather: partially cloudy with highs near 86°F.
Puntarenas, Costa Rica is a scheduled port of call on day 10 of the 26-night MSC Grand Voyages cruise on MSC Poesia. Expected weather: rain, overcast with highs near 82°F.
Panama Canal is a scheduled port of call on day 11 of the 26-night MSC Grand Voyages cruise on MSC Poesia. Expected weather: overcast with highs near 83°F.
Colon, Panama is a scheduled port of call on day 12 of the 26-night MSC Grand Voyages cruise on MSC Poesia. Expected weather: partially cloudy with highs near 84°F.
Cartagena, Colombia is a scheduled port of call on day 13 of the 26-night MSC Grand Voyages cruise on MSC Poesia. Expected weather: partially cloudy with highs near 88°F.
Miami, Florida is a scheduled port of call on day 14 of the 26-night MSC Grand Voyages cruise on MSC Poesia. Expected weather: partially cloudy with highs near 81°F.
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Most PopularSitka Sightseeing Tour including Fortress of the Bear and Totem Poles
From $100
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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.
Powered by Viator/Tripadvisor. Booking through our links may earn us a commission keeping this site free at no cost to you.
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From $34
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From $25
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From $85
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From $139
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From $135
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From $127
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From $64
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Most PopularMiami Millionaires Sightseeing Cruise
From $18
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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
Los Angeles, California
San Diego, California
Budget PickSan Diego: 3 Hour Whale Watch Cruise with Legacy Whale Watch
From $34
Book NowCabo San Lucas, Mexico
Most PopularCabo San Lucas Snorkeling Cruise with Open Bar and Lunch
From $80
Book NowBudget PickCabo Boat Ride to El Arco & Lover’s Beach with Swimming
From $25
Book NowPuntarenas, Costa Rica
Most PopularTurtle Island, from Puntarenas, snorkeling and lunch included!
From $85
Book NowColon, Panama
Most PopularCaribbean Catamaran Day Cruise: Beaches, Snorkeling & Lunch
From $139
Book NowBudget PickExcursion to San Lorenzo Fort plus Old and New Panama Canal locks
From $135
Book NowCartagena, Colombia
Most PopularCartagena and Murcia - full day shore excursion (cruisers only)
From $127
Book NowBudget PickRoman exploration in Cartagena (Spain) Walking tour
From $64
Book NowMiami, Florida
Most PopularMiami Millionaires Sightseeing Cruise
From $18
Book NowBudget PickMiami Skyline Cruise Biscayne Bay Views & City Lights
From $30
Book NowPowered by Viator/Tripadvisor. Booking through our links may earn us a commission keeping this site free at no cost to you.
