Chuginadak Island

Island

Remote Aleutian island in Alaska's Islands of Four Mountains group noted for volcanic peaks and sparse wildlife; visited mainly by researchers and expedition cruise passengers.

Chuginadak Island Juneau, AlaskaAnchorage, AlaskaFairbanks, AlaskaSitka, AlaskaUtqiagvik, AlaskaNome, AlaskaKetchikan, AlaskaKodiakChuginadak Island
In this guide

Chuginadak Island essentials

Address: Chuginadak Island, Aleutian Islands, Alaska, United States
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About Chuginadak Island

Chuginadak Island is an uninhabited island in the central Aleutian Islands of Alaska, part of the Islands of Four Mountains group. The island is volcanic in origin and dominated by steep volcanic cones.

The island includes Mount Cleveland, an active stratovolcano that produces intermittent eruptions and is monitored for aviation and regional safety. The terrain is rugged with sea cliffs and limited flat ground.

Human activity on the island is minimal due to its remoteness and volcanic activity; visits are generally restricted and undertaken only by scientific or monitored expeditions.

Chuginadak lies in the North Pacific Aleutian chain, west of mainland Alaska and east of other central Aleutian islands, well offshore of major population centres.

  • Access and safety: Uninhabited and remote, accessible only by boat or aircraft with operations restricted for safety due to volcanic activity.

What to See#

  • Mount Cleveland: Contains an active stratovolcano that is among the most frequently erupting volcanoes in the Aleutian arc, monitored by the Alaska Volcano Observatory.
Things to Do
When to Go

Best Time to Visit Chuginadak Island

Summer (June-August) provides the most reliable weather window for approach; plan with flexibility.

Summer
June-August · 5-12°C (41-54°F)
Calmest seas and longest daylight, but still chilly and unpredictable.
Late spring/early autumn
May, September · 2-10°C (36-50°F)
Shoulder seasons can be workable but riskier for weather and sea conditions.

Weather & Climate near Chuginadak Island

Climate

Chuginadak Island's climate is classified as Tundra - Tundra climate with cold summers (peaking in August) and freezing winters (coldest in March). Temperatures range from -2°C to 11°C. Abundant rainfall (1316 mm/year), wettest in October.

Air Quality: AQI 18 Good
Temperature & Rainfall
Temperature Range
11°
Warmest Month
-2°
Coldest Month
Monthly Conditions
Month Comfort Temp Feels Rain Sky Humidity Wind UV Daylight
January - -1° - 3° -5° 118 mm - - 7.6 m/s - -
February - -2° - 2° -6° 124 mm - - 7.7 m/s - -
March - -2° - 1° -6° 105 mm - - 6.8 m/s - -
April - -1° - 2° -5° 91 mm - - 6.9 m/s - -
May - 0° - 5° -3° 93 mm - - 6.2 m/s - -
June - 3° - 7° 1° 67 mm - - 6.0 m/s - -
July - 6° - 10° 5° 59 mm - - 5.6 m/s - -
August - 7° - 11° 6° 74 mm - - 5.6 m/s - -
September - 5° - 9° 3° 121 mm - - 6.8 m/s - -
October - 1° - 7° -1° 170 mm - - 7.7 m/s - -
November - 0° - 4° -4° 154 mm - - 8.0 m/s - -
December - -1° - 3° -5° 140 mm - - 7.6 m/s - -
Getting There & Around

How to Get to Chuginadak Island

Chuginadak lies in the central Aleutian chain; access requires a private charter boat or aircraft arranged from regional hubs such as Unalaska (Dutch Harbor) or Adak. Travel is weather‑dependent and usually planned with local operators experienced in Aleutian conditions.

Tips for Visiting Chuginadak Island

  • This is a remote, uninhabited island in the Aleutians - travel requires careful planning with experienced charter operators.
  • Check National Weather Service forecasts and marine notices; Aleutian weather is notoriously volatile.
  • Carry all necessary provisions and permits; wildlife and seabird colonies may be protected.