Great Sitkin Island
Island Volcanic Aleutian island with active stratovolcano
In the Aleutian chain, Great Sitkin is a volcanic island with rugged lava fields and seabird colonies. Access is limited; scientists and experienced adventurers come for volcanic study and remote wilderness.
Great Sitkin Island is a volcanic island in the Andreanof Islands group of the Aleutian chain in Alaska. The island hosts an active stratovolcano and is part of the volcanic arc that crosses the central Aleutians.
The landscape is dominated by volcanic cones and lava flows and there are no permanent settlements or visitor facilities on the island. Access is by boat or aircraft and is mainly undertaken for scientific or monitoring purposes.
The island’s volcano has produced recorded eruptive activity in historical times and is monitored by the Alaska Volcano Observatory for ash emissions and seismic unrest. It lies within the remote central Aleutian region of Alaska.
- Access: The island is uninhabited and visits are typically limited to scientific teams or experienced mariners; there are no visitor facilities.
- Volcanic activity: The volcano on the island is monitored by the Alaska Volcano Observatory because it is an active volcanic center within the Aleutian chain.
How to Get to Great Sitkin Island #
Access is limited to research and authorised vessels; the island is remote and typically reached only by chartered research ships or, rarely, by helicopter from larger Aleutian bases. Contact US agencies (NOAA/USGS/USFWS) for permissions and current advisories.
Tips for Visiting Great Sitkin Island #
- This is an active volcanic island within a remote Aleutian chain-only experienced mariners and researchers should attempt landings.
- Monitor NOAA or USGS advisories for seismic and volcanic activity before planning any trip.
- Permit and Coast Guard coordination are required for most visits to remote Alaskan islands.
Best Time to Visit Great Sitkin Island #
If travel is permitted, summer months offer the safest weather windows for access.
Weather & Climate near Great Sitkin Island #
Great Sitkin Island's climate is classified as Tundra - Tundra climate with cold summers (peaking in August) and freezing winters (coldest in March). Temperatures range from -3°C to 8°C. Abundant rainfall (1281 mm/year), wettest in October.
January
January is cold with highs of 1°C and lows of -2°C. Significant rainfall (106 mm) and windy conditions.
Comfort
Weather
February
February is cold with highs of 1°C and lows of -1°C. Significant rainfall (108 mm) and windy conditions.
Comfort
Weather
March
March is the coldest month with highs of -1°C and lows of -3°C. Significant rainfall (103 mm) and breezy conditions.
Comfort
Weather
April
April is freezing with highs of -1°C and lows of -2°C. Regular rainfall (90 mm) and breezy conditions.
Comfort
Weather
May
May is cold with highs of 1°C and lows of -1°C. Moderate rainfall (79 mm) and breezy conditions.
Comfort
Weather
June
June is cold with highs of 4°C and lows of 2°C. Moderate rainfall (63 mm) and breezy conditions.
Comfort
Weather
July
July is cold with highs of 7°C and lows of 4°C. Moderate rainfall (69 mm) and breezy conditions.
Comfort
Weather
August
August is cold with highs of 8°C and lows of 6°C. Regular rainfall (95 mm) and breezy conditions.
Comfort
Weather
September
September is cold with highs of 7°C and lows of 4°C. Significant rainfall (118 mm) and breezy conditions.
Comfort
Weather
October
October is cold with highs of 4°C and lows of 1°C. The wettest month with heavy rain (169 mm) and breezy conditions.
Comfort
Weather
November
November is cold with highs of 3°C and lows of 0°C. Significant rainfall (155 mm) and breezy conditions.
Comfort
Weather
December
December is cold with highs of 2°C and lows of -1°C. Significant rainfall (126 mm) and breezy conditions.
