Aniakchak National Monument and Preserve

Monument Volcanic caldera national monument in remote Alaska

Aniakchak National Monument and Preserve in southwest Alaska contains a volcanic caldera and remote wilderness; visitors go for backcountry hiking, fishing and to study volcanic geology and tundra landscapes.

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Aniakchak National Monument and Preserve protects the Aniakchak volcanic caldera and surrounding wilderness on the Alaska Peninsula. The designation covers volcanic landscapes, rugged tundra, and coastal areas in a largely undeveloped conservation area.

The volcanic landforms, including the caldera rim and volcanic vents, along with remote backcountry opportunities for experienced wilderness travelers. There are no staffed visitor centers or developed roads within the monument and preserve.

The area was set aside to protect its volcanic features and natural ecosystems and is managed for both conservation and traditional subsistence use. Management emphasizes preserving geological features and natural processes in a largely untouched setting.

The monument and preserve are on the central Alaska Peninsula in southwest Alaska and are remote from major towns; access is largely by air or extended travel along rivers and coastlines. The nearest road-connected towns are many hours away by plane or boat.

  • Access: The monument is extremely remote and roadless; most visitors arrive by small aircraft or lengthy overland/river travel.
Aniakchak National Monument and Preserve
56.8333, -158.2510

How to Get to Aniakchak National Monument and Preserve #

Aniakchak is remote; access typically requires bush plane or long overland travel. Visitors should coordinate with NPS ranger stations in King Salmon and check for required permits and flight options.

Tips for Visiting Aniakchak National Monument and Preserve #

  • If planning backcountry travel, register with local rangers and check for weather and eruption bulletins.
  • Bring cold-weather gear even in summer; Alaskan weather changes quickly and can be damp and windy.
  • Consult the National Park Service for access permits and recent trail conditions; services within the park are minimal.

Best Time to Visit Aniakchak National Monument and Preserve #

Access is highly seasonal; summer provides the most reliable window for travel, but even then conditions are remote and changeable.

Summer
June-August · 3-12°C
Short window when field access is most feasible; long daylight helps remote travel planning.
Late Spring/Early Autumn
May, September · 0-10°C
Possible visits but watch for snow and limited services.

Weather & Climate near Aniakchak National Monument and Preserve #

Climate

Aniakchak National Monument and Preserve's climate is classified as Subarctic (Dry Summer) - Subarctic (Dry Summer) climate with cold summers (peaking in August) and freezing winters (coldest in March). Temperatures range from -8°C to 13°C. Moderate rainfall (607 mm/year).

Air Quality: AQI 15 Good
Best Time to Visit
JuneJulyAugust
Temperature & Rainfall
Temperature Range
25°
Warmest Month
-27°
Coldest Month
Monthly Conditions

January

January is freezing with highs of -2°C and lows of -8°C. Moderate rainfall (33 mm) and mostly overcast skies.

37 Poor

Comfort

-5°
Feels Like Freezing
-5°C
Temperature
-8° -2°
95%
Humidity
Very Humid

Weather

33 mm
Rainfall
4.8 m/s
Wind
Light Breeze
0.0
UV Index
Low
7.4h daylight

February

February is freezing with highs of -2°C and lows of -7°C. The driest month with just 29 mm and mostly overcast skies.

39 Poor

Comfort

-5°
Feels Like Freezing
-5°C
Temperature
-7° -2°
93%
Humidity
Very Humid

Weather

29 mm
Rainfall
5.0 m/s
Wind
Light Breeze
0.1
UV Index
Low
9.3h daylight

March

March is the coldest month with highs of -2°C and lows of -7°C. Moderate rainfall (36 mm) and mostly overcast skies.

39 Poor

Comfort

-5°
Feels Like Freezing
-5°C
Temperature
-7° -2°
90%
Humidity
Very Humid

Weather

36 mm
Rainfall
4.8 m/s
Wind
Light Breeze
0.3
UV Index
Low
11.7h daylight

April

April is freezing with highs of 0°C and lows of -5°C. Moderate rainfall (36 mm) and mostly overcast skies.

37 Poor

Comfort

-2°
Feels Like Freezing
-2°C
Temperature
-5°
87%
Humidity
Very Humid

Weather

36 mm
Rainfall
4.7 m/s
Wind
Light Breeze
0.6
UV Index
Moderate
14.0h daylight

May

May is cold with highs of 4°C and lows of 0°C. Moderate rainfall (39 mm) and mostly overcast skies.

46 Poor

Comfort

Feels Like Cold
C
Temperature
-1°
85%
Humidity
Very Humid

Weather

39 mm
Rainfall
4.4 m/s
Wind
Light Breeze
0.9
UV Index
Moderate
16.2h daylight

June

June is cold with highs of 10°C and lows of 4°C. Moderate rainfall (46 mm) and mostly overcast skies.

54 Acceptable

Comfort

Feels Like Cold
C
Temperature
10°
84%
Humidity
Very Humid

Weather

46 mm
Rainfall
4.2 m/s
Wind
Light Breeze
1.1
UV Index
High
17.3h daylight

July

July is cold with highs of 13°C and lows of 6°C. Moderate rainfall (59 mm) and mostly overcast skies.

54 Acceptable

Comfort

10°
Feels Like Cold
10°C
Temperature
13°
85%
Humidity
Very Humid

Weather

59 mm
Rainfall
4.0 m/s
Wind
Light Breeze
1.1
UV Index
High
16.8h daylight

August

August is cold with highs of 13°C and lows of 7°C. Moderate rainfall (71 mm) and mostly overcast skies.

54 Acceptable

Comfort

10°
Feels Like Cold
10°C
Temperature
13°
87%
Humidity
Very Humid

Weather

71 mm
Rainfall
4.3 m/s
Wind
Light Breeze
0.9
UV Index
Moderate
14.9h daylight

September

September is cold with highs of 10°C and lows of 4°C. The wettest month with 81 mm of rain and mostly overcast skies.

50 Acceptable

Comfort

Feels Like Cold
C
Temperature
10°
87%
Humidity
Very Humid

Weather

81 mm
Rainfall
4.6 m/s
Wind
Light Breeze
0.5
UV Index
Low
12.6h daylight

October

October is cold with highs of 4°C and lows of -2°C. Moderate rainfall (77 mm) and mostly overcast skies.

42 Poor

Comfort

Feels Like Cold
C
Temperature
-2°
88%
Humidity
Very Humid

Weather

77 mm
Rainfall
4.7 m/s
Wind
Light Breeze
0.2
UV Index
Low
10.2h daylight

November

November is freezing with highs of 1°C and lows of -5°C. Moderate rainfall (52 mm) and mostly overcast skies.

35 Poor

Comfort

-2°
Feels Like Freezing
-2°C
Temperature
-5°
91%
Humidity
Very Humid

Weather

52 mm
Rainfall
4.9 m/s
Wind
Light Breeze
0.0
UV Index
Low
8.0h daylight

December

December is freezing with highs of -1°C and lows of -6°C. Moderate rainfall (48 mm) and mostly overcast skies.

35 Poor

Comfort

-3°
Feels Like Freezing
-3°C
Temperature
-6° -1°
93%
Humidity
Very Humid

Weather

48 mm
Rainfall
5.1 m/s
Wind
Light Breeze
0.0
UV Index
Low
6.7h daylight

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