Chagulak Island

Island Uninhabited volcanic island in Aleutians, notable birdlife

Part of Alaska’s Aleutians, Chagulak is an uninhabited volcanic island with steep cliffs and seabird colonies; access is limited to specialist expeditions and scientific teams.

Main image

Chagulak Island is an uninhabited volcanic island in the Aleutian Islands chain of Alaska, part of the North Pacific Aleutian arc. It is a steep-sided volcanic cone rising directly from the sea and forms part of the remote island group of the region.

There are no permanent settlements or facilities on the island, and it is primarily of interest for natural history and geological study. Seabirds and marine life use nearby waters and the island’s cliffs as habitat.

The island lies within Alaska’s Aleutian archipelago in the North Pacific, and access is by boat or aircraft only, generally from other Aleutian islands or mainland Alaska.

  • Access: The island is uninhabited and has no visitor facilities; visits require maritime transport and are rare.
Chagulak Island
Chagulak Island, Aleutian Islands, Alaska, USA
52.5722, -171.1414

How to Get to Chagulak Island #

Access is only by sea (or helicopter for research teams). Charters depart from larger Aleutian hubs such as Dutch Harbor (Unalaska); trips require experienced operators and careful weather planning.

Tips for Visiting Chagulak Island #

  • Chagulak Island is part of a remote, uninhabited Aleutian chain - plan logistics with experienced charter operators and respect Wildlife Refuge protections.
  • There are no visitor facilities; approach by sea requires calm seas and appropriate safety gear.
  • Wildlife viewing (seabird colonies, marine mammals) is seasonal and weather‑dependent; aim for late spring or summer for the best chance of sightings.

Best Time to Visit Chagulak Island #

Summer months are the safest and most practical for visits, though the area remains remote with unpredictable weather.

Summer
June-August · 5-12°C (41-54°F)
Best weather window for sea access and seabird activity.
Shoulder seasons
May and September · 2-8°C (36-46°F)
Cool and variable; more challenging sea conditions but fewer operators.

Weather & Climate near Chagulak Island #

Climate

Chagulak Island's climate is classified as Tundra - Tundra climate with cold summers (peaking in August) and freezing winters (coldest in April). Temperatures range from -2°C to 8°C. Abundant rainfall (1303 mm/year), wettest in October.

Temperature & Rainfall
Temperature Range
Warmest Month
-2°
Coldest Month
Monthly Conditions

January

January is cold with highs of 4°C and lows of 0°C. Significant rainfall (114 mm) and breezy conditions.

Comfort

Feels Like Cold
C
Temperature

Weather

114 mm
Rainfall
8.5 m/s
Wind
Breezy

February

February is cold with highs of 4°C and lows of 0°C. Significant rainfall (119 mm) and breezy conditions.

Comfort

Feels Like Cold
C
Temperature

Weather

119 mm
Rainfall
8.6 m/s
Wind
Breezy

March

March is freezing with highs of 1°C and lows of -2°C. Significant rainfall (105 mm) and breezy conditions.

Comfort

-1°
Feels Like Freezing
-1°C
Temperature
-2°

Weather

105 mm
Rainfall
7.4 m/s
Wind
Breezy

April

April is the coldest month with highs of 1°C and lows of -2°C. Regular rainfall (88 mm) and breezy conditions.

Comfort

-1°
Feels Like Freezing
-1°C
Temperature
-2°

Weather

88 mm
Rainfall
7.5 m/s
Wind
Breezy

May

May is cold with highs of 2°C and lows of -1°C. Regular rainfall (87 mm) and breezy conditions.

Comfort

Feels Like Cold
C
Temperature
-1°

Weather

87 mm
Rainfall
6.6 m/s
Wind
Breezy

June

June is cold with highs of 4°C and lows of 1°C. Moderate rainfall (68 mm) and breezy conditions.

Comfort

Feels Like Cold
C
Temperature

Weather

68 mm
Rainfall
6.3 m/s
Wind
Breezy

July

July is cold with highs of 7°C and lows of 4°C. Moderate rainfall (62 mm) and breezy conditions.

Comfort

Feels Like Cold
C
Temperature

Weather

62 mm
Rainfall
6.0 m/s
Wind
Breezy

August

August is cold with highs of 8°C and lows of 5°C. Moderate rainfall (79 mm) and breezy conditions.

Comfort

Feels Like Cold
C
Temperature

Weather

79 mm
Rainfall
6.1 m/s
Wind
Breezy

September

September is cold with highs of 7°C and lows of 4°C. Significant rainfall (122 mm) and breezy conditions.

Comfort

Feels Like Cold
C
Temperature

Weather

122 mm
Rainfall
7.4 m/s
Wind
Breezy

October

October is cold with highs of 6°C and lows of 1°C. The wettest month with heavy rain (168 mm) and breezy conditions.

Comfort

Feels Like Cold
C
Temperature

Weather

168 mm
Rainfall
8.2 m/s
Wind
Breezy

November

November is cold with highs of 5°C and lows of 1°C. Significant rainfall (155 mm) and breezy conditions.

Comfort

Feels Like Cold
C
Temperature

Weather

155 mm
Rainfall
8.7 m/s
Wind
Breezy

December

December is cold with highs of 5°C and lows of 0°C. Significant rainfall (136 mm) and breezy conditions.

Comfort

Feels Like Cold
C
Temperature

Weather

136 mm
Rainfall
8.5 m/s
Wind
Breezy

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