Main image

Cyrus Read, USGS CC BY-SA 4.0 Wikimedia Commons

Fourpeaked Mountain

Mountain

A remote Alaskan volcanic peak on the southern peninsula, reached mainly by air. Climbers and scientists visit for glaciated slopes, alpine routes and study of volcanic terrain and weather‑affected access.

Fourpeaked Mountain Juneau, AlaskaAnchorage, AlaskaFairbanks, AlaskaSitka, AlaskaUtqiagvik, AlaskaNome, AlaskaKetchikan, AlaskaKodiakFourpeaked Mountain
In this guide

Fourpeaked Mountain essentials

Address: Fourpeaked Mountain (Fourpeaked Volcano), Katmai region, Alaska, USA

About Fourpeaked Mountain

Fourpeaked Mountain is a volcanic mountain massif on the Alaska Peninsula in southern Alaska. It is part of the volcanically active Aleutian arc and is recognized as a volcanic feature within the region.

The mountain has been the subject of geological and volcanic observation in modern times due to episodes of activity recorded in the 21st century. Access is limited and conditions are alpine and remote, so visits are typically by experienced mountaineers or by observation from aircraft.

Fourpeaked sits within the rugged landscape of the Alaska Peninsula, amid other volcanic peaks and wilderness areas of southern Alaska.

  • Volcanic monitoring: Part of the volcanic and mountainous terrain of southern Alaska and monitored by regional geological agencies for activity where applicable.
When to Go

Best Time to Visit Fourpeaked Mountain

Best for viewing in summer; always monitor volcanic advisories and weather.

Summer
June-August · 0-10°C
Milder weather and long daylight for aerial viewing and scientific access.
Late spring/early autumn
May or September · -5-5°C
Variable conditions; glacier and snow travel more hazardous.

Weather & Climate near Fourpeaked Mountain

Climate

Fourpeaked Mountain's climate is classified as Tundra - Tundra climate with cold summers (peaking in August) and freezing winters (coldest in March). Temperatures range from -12°C to 5°C. Abundant rainfall (1112 mm/year), wettest in September.

Air Quality: AQI 14 Good
Temperature & Rainfall
Temperature Range
5°
Warmest Month
-12°
Coldest Month
Monthly Conditions
Month Comfort Temp Feels Rain Sky Humidity Wind UV Daylight
January - -10° - -4° -14° 94 mm - - 6.6 m/s - -
February - -9° - -4° -14° 83 mm - - 6.6 m/s - -
March - -12° - -7° -17° 78 mm - - 5.0 m/s - -
April - -10° - -6° -15° 65 mm - - 5.0 m/s - -
May - -5° - -1° -9° 65 mm - - 4.2 m/s - -
June - -2° - 3° -4° 90 mm - - 4.4 m/s - -
July - 0° - 5° -1° 93 mm - - 4.3 m/s - -
August - 1° - 5° -1° 116 mm - - 4.7 m/s - -
September - -1° - 3° -5° 134 mm - - 5.5 m/s - -
October - -7° - -1° -10° 106 mm - - 5.4 m/s - -
November - -8° - -3° -12° 90 mm - - 6.1 m/s - -
December - -9° - -2° -13° 98 mm - - 7.0 m/s - -
Getting There & Around

How to Get to Fourpeaked Mountain

No road access; reachability usually via floatplane or charter from nearby towns like Kodiak or Homer, subject to weather and aviation advisories.

Tips for Visiting Fourpeaked Mountain

  • Fourpeaked is an active volcano (last major eruption 2006) - check USGS and Alaska Volcano Observatory alerts before planning travel.
  • Access is extremely remote and typically requires charter floatplane or extended overland expedition; not suitable for casual day trips.
  • Weather changes rapidly; plan for glacier travel gear and experienced guides for any serious approach.