Tanaga IslandAbout Tanaga Island
Tanaga Island is an uninhabited island in the Aleutian chain of Alaska, dominated by volcanic terrain. The island’s principal feature is Tanaga Volcano, a tall stratovolcano that forms the island’s central massif.
The landscape is rugged with volcanic peaks, lava flows and limited coastal lowlands; there are no settlements or services. Human activity on the island is minimal and typically limited to geological or ecological research.
The island is part of the Aleutian Islands, which are volcanic and tectonically active; Tanaga is one of several Aleutian volcanoes and contributes to the region’s seismic and volcanic profile.
Tanaga lies in the central Aleutians within Alaska and is administered as part of the state; access is by sea or air only under expedition conditions.
- Access and infrastructure: The island is uninhabited and has no permanent infrastructure; visits are limited to scientific or specialist expeditions.
What to See#
- Tanaga Volcano: Tanaga Volcano, the island’s main volcanic cone rising to about 1,806 metres and forming the principal topographic feature.
Best Time to Visit Tanaga Island
Tanaga Island is an Aleutian wilderness only safely visited in summer via skilled charter vessels or bush plane arrangements.
Weather & Climate near Tanaga Island
Tanaga Island's climate is classified as Tundra - Tundra climate with cold summers (peaking in August) and freezing winters (coldest in January). Temperatures range from -2°C to 12°C. Abundant rainfall (1170 mm/year), wettest in October.
| Month | Comfort | Temp | Feels | Rain | Sky | Humidity | Wind | UV | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | - | -2° - 1° | -8° | 98 mm | - | - | 10.3 m/s | - | - |
| February | - | -2° - 1° | -8° | 97 mm | - | - | 9.9 m/s | - | - |
| March | - | -1° - 2° | -7° | 97 mm | - | - | 9.5 m/s | - | - |
| April | - | 0° - 3° | -4° | 89 mm | - | - | 8.6 m/s | - | - |
| May | - | 2° - 5° | -2° | 78 mm | - | - | 7.9 m/s | - | - |
| June | - | 5° - 8° | 2° | 55 mm | - | - | 7.1 m/s | - | - |
| July | - | 7° - 11° | 6° | 61 mm | - | - | 6.7 m/s | - | - |
| August | - | 8° - 12° | 7° | 88 mm | - | - | 6.9 m/s | - | - |
| September | - | 7° - 10° | 5° | 100 mm | - | - | 7.9 m/s | - | - |
| October | - | 3° - 7° | 0° | 149 mm | - | - | 8.8 m/s | - | - |
| November | - | 1° - 4° | -4° | 143 mm | - | - | 9.4 m/s | - | - |
| December | - | -1° - 2° | -7° | 115 mm | - | - | 9.8 m/s | - | - |
How to Get to Tanaga Island
There are no scheduled services to Tanaga Island. Access is by private charter from Adak or other Aleutian hubs; bush plane landings are possible with prior arrangements and permits. Travel requires experienced operators familiar with Aleutian weather and seas.
Tips for Visiting Tanaga Island
- Do not attempt landings without an experienced Aleutian skipper - the surf and currents are unforgiving.
- There are no services; be fully self-sufficient and file a float plan with the U.S. Coast Guard before attempting a visit.
- Respect wildlife closures and nesting seasons; Tanaga supports sensitive bird colonies and marine mammal haul-outs.