Main image

Jacques Descloitres, MODIS Land Rapid Response Team, NASA/GSFC CC BY-SA 4.0 Wikimedia Commons

Alexander Archipelago

Island

Southeast Alaska's Alexander Archipelago comprises thousands of forested islands and fjords; visitors travel by cruise or floatplane for wildlife, fishing lodges, kayaking and remote coastal communities.

Alexander Archipelago Juneau, AlaskaAnchorage, AlaskaFairbanks, AlaskaSitka, AlaskaUtqiagvik, AlaskaNome, AlaskaKetchikan, AlaskaKodiakAlexander Archipelago
In this guide

Alexander Archipelago essentials

Address: Alexander Archipelago, southeastern Alaska, United States (near Juneau, Ketchikan, Sitka)

About Alexander Archipelago

The Alexander Archipelago is a large group of coastal islands in southeastern Alaska, consisting of roughly 1,000 to 1,100 islands that line the Alaska Panhandle. The islands are largely glaciated in origin and are covered by temperate rainforest, fjords and rugged mountains.

Major islands include Admiralty, Chichagof, Baranof and Prince of Wales, many of which host dense old-growth forest and critical salmon streams. The archipelago offers extensive wilderness, wildlife viewing for species such as brown bears and bald eagles, and marine navigation routes used by ferries and fishing vessels.

The islands are the traditional territories of Tlingit, Haida and Tsimshian peoples and later saw Russian and American activity during the fur trade and resource development eras. Much of the archipelago’s landscape was shaped by repeated glaciation and subsequent sea-level rise that drowned coastal valleys to form the current island chain.

Geographically the Alexander Archipelago runs along the southeastern Alaskan coast between the Gulf of Alaska and the Pacific, forming the inner and outer channels of the Alaska Panhandle. The group stretches for several hundred kilometres and lies adjacent to communities such as Juneau, Sitka and Ketchikan.

  • Scale: The archipelago comprises roughly 1,000 to 1,100 named islands, islets and rocks along southeastern Alaska’s coast and forms part of the Alaska Panhandle.
  • Environment: Much of the land falls within the Tongass National Forest and consists of glaciated mountains, fjords, dense temperate rainforest and important salmon and wildlife habitat.

What to See#

  • Admiralty Island: Admiralty Island - a large, forested island known for dense brown bear populations and old-growth temperate rainforest; part of the Tongass National Forest.
  • Chichagof and Baranof Islands: Chichagof and Baranof Islands - among the largest in the group, featuring rugged coastlines, fjords, and extensive temperate rainforest typical of the archipelago.
  • Prince of Wales Island: Prince of Wales Island - one of the largest islands in the archipelago with rugged terrain, salmon streams and remote communities.
When to Go

Best Time to Visit Alexander Archipelago

Summer is prime for travel and wildlife viewing; shoulder seasons are quieter but require flexible schedules due to variable ferry services.

Summer
June-August · 8°C-18°C
Best time for sea-kayaking, wildlife viewing (bears and whales) and ferry travel.
Late spring and early autumn
May, September · 5°C-12°C
Fewer visitors and good chances for wildlife; some services begin to close in September.

Weather & Climate near Alexander Archipelago

Climate

Alexander Archipelago's climate is classified as Oceanic - Oceanic climate with cool summers (peaking in August) and freezing winters (coldest in January). Temperatures range from -3°C to 16°C. Heavy rainfall (4207 mm/year), wettest in October.

Air Quality: AQI 14 Good
Temperature & Rainfall
Temperature Range
16°
Warmest Month
-3°
Coldest Month
Monthly Conditions
Month Comfort Temp Feels Rain Sky Humidity Wind UV Daylight
January - -3° - 2° -6° 421 mm - - 4.3 m/s - -
February - -2° - 3° -4° 340 mm - - 4.2 m/s - -
March - -2° - 4° -3° 316 mm - - 3.9 m/s - -
April - 0° - 7° 0° 262 mm - - 3.7 m/s - -
May - 4° - 11° 5° 228 mm - - 3.3 m/s - -
June - 7° - 14° 10° 185 mm - - 3.0 m/s - -
July - 9° - 15° 12° 183 mm - - 2.7 m/s - -
August - 9° - 16° 12° 263 mm - - 2.8 m/s - -
September - 7° - 12° 8° 447 mm - - 3.2 m/s - -
October - 4° - 8° 3° 639 mm - - 3.9 m/s - -
November - -1° - 4° -2° 477 mm - - 4.1 m/s - -
December - -2° - 2° -5° 446 mm - - 4.4 m/s - -
Getting There & Around

How to Get to Alexander Archipelago

Regional airlines serve hub towns (Juneau, Ketchikan, Sitka) and the Alaska Marine Highway ferry system links many islands; private charters and fishing boat transfers are also common. Plan itineraries around ferry schedules, which vary seasonally.

Tips for Visiting Alexander Archipelago

  • Travel between islands on the Alaska Marine Highway ferry system for the most practical access; schedules are highly seasonal.
  • Plan for limited services: many communities in the archipelago have small stores and few tourist facilities.
  • Bring rain gear and layers - the Alexander Archipelago's weather is maritime and often wet.