Unalaska IslandUnalaska Island at a Glance
About Unalaska Island
Unalaska Island is part of the Aleutian island chain in Alaska and hosts the town of Unalaska and the port complex known as Dutch Harbor. The island is a principal centre for commercial fishing in the region and for Aleutian maritime operations.
Rocky coastlines, deep harbours and frequent maritime weather define the local landscape; significant features include the built harbour facilities and the volcanic cone of Makushin. The island supports fisheries infrastructure, cold-water marine wildlife and rugged coastal scenery visited by fishermen and seasonal tourists.
Dutch Harbor grew into a major fishing port in the 20th century and the island saw military activity and fortifications during World War II, including the June 1942 attack that marked the Aleutian campaign. The island’s economy has long been dominated by seafood harvesting and processing.
Unalaska Island lies in the eastern Aleutians between the Bering Sea and the North Pacific, administratively part of the Aleutians West region of Alaska. It is remote from Alaska’s main population centres and is accessed by air and sea services serving the Bering Sea fisheries.
- Fishing industry: One of the busiest commercial fishing hubs in Alaska, with large crab and groundfish fleets operating from its harbours.
- World War II history: Site of a Japanese attack in June 1942 during World War II; wartime fortifications and related sites remain of historical interest.
What to See#
- Dutch Harbor: Major fishing port and harbour complex that handles large volumes of seafood, commonly referred to as Dutch Harbor by the fishing industry.
- Unalaska town: Administrative centre and community on the island, with services, housing and transport links for the wider archipelago.
- Makushin Volcano: Prominent volcanic massif on the island with visible fumarolic activity and a recognizable conical profile; a notable natural landmark on the island.
Best Time to Visit Unalaska Island
Summer (June-August) is the best time for access and wildlife viewing; always expect sudden fog and wind.
Weather & Climate near Unalaska Island
Unalaska Island's climate is classified as Tundra - Tundra climate with cold summers (peaking in August) and freezing winters (coldest in March). Temperatures range from -5°C to 10°C. Abundant rainfall (1615 mm/year), wettest in October.
| Month | Comfort | Temp | Feels | Rain | Sky | Humidity | Wind | UV | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | - | -4° - 0° | -8° | 152 mm | - | - | 6.3 m/s | - | - |
| February | - | -5° - -1° | -9° | 166 mm | - | - | 6.2 m/s | - | - |
| March | - | -5° - -2° | -9° | 132 mm | - | - | 5.5 m/s | - | - |
| April | - | -4° - -1° | -8° | 106 mm | - | - | 5.5 m/s | - | - |
| May | - | -2° - 2° | -5° | 116 mm | - | - | 4.9 m/s | - | - |
| June | - | 1° - 5° | -1° | 87 mm | - | - | 4.9 m/s | - | - |
| July | - | 4° - 9° | 3° | 69 mm | - | - | 4.8 m/s | - | - |
| August | - | 5° - 10° | 5° | 80 mm | - | - | 4.9 m/s | - | - |
| September | - | 3° - 7° | 1° | 149 mm | - | - | 5.9 m/s | - | - |
| October | - | -1° - 4° | -4° | 207 mm | - | - | 6.1 m/s | - | - |
| November | - | -3° - 2° | -7° | 179 mm | - | - | 6.6 m/s | - | - |
| December | - | -4° - 1° | -8° | 172 mm | - | - | 6.3 m/s | - | - |
How to Get to Unalaska Island
Unalaska (Dutch Harbor) is reached by air from Anchorage; Alaska Airlines operates flights (schedules vary seasonally). There are no road connections off the island; ferries and freighters visit intermittently.
Tips for Visiting Unalaska Island
- If visiting Unalaska, book flights early - Alaska Airlines is the main carrier to Dutch Harbor and schedules can change with weather.
- Pack waterproof gear; weather changes quickly and drizzle is common even in summer.
- Respect local fishing operations and wildlife regulations - commercial fishing dominates the island economy and certain areas are restricted.