Alaska's Inside Passage

The changing mists of the Inside Passage - home to the Tongass National Forest, North America’s northernmost temperate rainforest, and traditional home to the Tsimshian, Haida, and Tlingit people - evoke a sense of magic and wonder. This region’s maritime climate is heavily influenced by the Pacific Ocean, its oceans and winds regulating temperatures along the coast.

Temperatures in the Inside Passage tend to avoid big extremes. Summer daytime highs are mild - generally in the low- to mid-60°F range, while nighttime lows are in the mid-to high-40s. It is a rainforest, so be prepared for light mist and rain at any time. In winter, temperatures rarely fall below 20° F, and snow along the temperate coastline tends to melt within a few days.

In Ketchikan, the longest days of summer have 17.5 hours of daylight, but only 7 hours of daylight on the shortest day of the year (December 21).


Average temperature for The Inside Passage

Average temperature by month in Alaska's Inside Passage
Average Temperature by Month
Month Low High
Jan 20° F 29° F
Feb 23° F 33° F
Mar 28° F 39° F
Apr 32° F 48° F
May 40° F 55° F
Jun 45° F 62° F
Jul 48° F 65° F
Aug 48° F 62° F
Sep 42° F 56° F
Oct 38° F 48° F
Nov 28° F 38° F
Dec 22° F 32° F

Sunlight hours by month for The Inside Passage

Average Daylight by Month in Alaska's Inside Passage
Hours of Daylight by Month
Month Hrs of Light
Jan 4
Feb 10
Mar 12
Apr 14
May 16
Jun 18
Jul 17
Aug 16
Sep 14
Oct 9
Nov 8
Dec 6

Proper Clothing for The Inside Passage

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  • Short sleeved shirt, shorts

    Short Sleeved
    Shirt, Shorts

  • Long sleeved shirt, jeans / slacks
    Long Sleeved
    Shirt, Pants

    Sleeved
    Shirt,
    Pants
  • Warm hat and gloves
    Warm Hat
    and Gloves
    Warm
    Hat
    and Gloves
  • Comfortable Walking Shoes
    Comfortable
    Walking Shoes
    Comfortable
    Walking
    Shoes
  • Waterproof boots

    Waterproof
    Boots

  • Insulated boots

    Insulated
    Boots

  • Long underwear

    Long
    Underwear

  • Windbreaker or jacket

    Windbreaker
    or Jacket

  • Wool sweater or fiberfill vest
    Wool Sweater
    or Fiberfill Vest
    Wool Sweater or
    Fiberfill Vest
  • Winter coat

    Winter
    Coat

  • Spring

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  • Spring

  • Summer

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  • Summer

  • Fall

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  • Fall

  • Winter

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  • Winter