10-Night Cruise on Ruby PrincessInside Passage (Roundtrip San Francisco) - Weather

Departing San Francisco, California on August 31, 2026, the Princess Cruises ship Ruby Princess runs this 10-night Inside Passage (Roundtrip San Francisco) sailing. It's a classic Alaska cruise. Travelers sailing in August 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, Tracy Arm/Endicott Arm, Alaska, Juneau, Alaska, with 4 more along the way. Scroll the daily outlook below to pack smart for every port of call.

1. Day 1 — Monday, Aug 31, 2026 — San Francisco, California

   San Francisco, California is a scheduled port of call on day 1 of the 10-night Inside Passage (Roundtrip San Francisco) cruise on Ruby Princess.

2. Day 2 — Tuesday, Sep 1, 2026 — At Sea

   Day 2 of 11 is a day at sea aboard Ruby Princess, cruising between ports on the Inside Passage (Roundtrip San Francisco) itinerary.

3. Day 3 — Wednesday, Sep 2, 2026 — At Sea

   Day 3 of 11 is a day at sea aboard Ruby Princess, cruising between ports on the Inside Passage (Roundtrip San Francisco) itinerary.

4. Day 4 — Thursday, Sep 3, 2026 — Tracy Arm/Endicott Arm, Alaska

   Tracy Arm/Endicott Arm, Alaska is a scheduled port of call on day 4 of the 10-night Inside Passage (Roundtrip San Francisco) cruise on Ruby Princess.

5. Day 5 — Friday, Sep 4, 2026 — Juneau, Alaska

   Juneau, Alaska is a scheduled port of call on day 5 of the 10-night Inside Passage (Roundtrip San Francisco) cruise on Ruby Princess.

6. Day 6 — Saturday, Sep 5, 2026 — Icy Strait Point, Alaska

   Icy Strait Point, Alaska is a scheduled port of call on day 6 of the 10-night Inside Passage (Roundtrip San Francisco) cruise on Ruby Princess.

7. Day 7 — Sunday, Sep 6, 2026 — Wrangell, Alaska

   Wrangell, Alaska is a scheduled port of call on day 7 of the 10-night Inside Passage (Roundtrip San Francisco) cruise on Ruby Princess.

8. Day 8 — Monday, Sep 7, 2026 — Prince Rupert, British Columbia

   Prince Rupert, British Columbia is a scheduled port of call on day 8 of the 10-night Inside Passage (Roundtrip San Francisco) cruise on Ruby Princess.

9. Day 9 — Tuesday, Sep 8, 2026 — At Sea

   Day 9 of 11 is a day at sea aboard Ruby Princess, cruising between ports on the Inside Passage (Roundtrip San Francisco) itinerary.

10. Day 10 — Wednesday, Sep 9, 2026 — At Sea

    Day 10 of 11 is a day at sea aboard Ruby Princess, cruising between ports on the Inside Passage (Roundtrip San Francisco) itinerary.

11. Day 11 — Thursday, Sep 10, 2026 — San Francisco, California

    San Francisco, California is a scheduled port of call on day 11 of the 10-night Inside Passage (Roundtrip San Francisco) cruise on Ruby Princess.