Hell's Half Acre Lava Field

Area Extensive lava field with dramatic volcanic features and trails

Extensive basaltic lava field of jagged rock and cones in Idaho; attracts geologists, hikers and photographers studying unusual volcanic terrain and backcountry tracks.

Main image
Hell's Half Acre Lava Field
43.3644, -112.3575

How to Get to Hell's Half Acre Lava Field #

Accessible by road in central Idaho. Most visitors approach via state highways and local gravel roads; a high-clearance vehicle may be useful for final stretches. Check local land management signage for permitted access and parking areas.

Tips for Visiting Hell's Half Acre Lava Field #

  • Wear closed shoes and long pants-lava fields are sharp and can bruise skin easily.
  • Bring a compass or GPS; it's surprisingly easy to lose bearings in the black, broken landscape.
  • Visit in the morning for softer light-the textures of pahoehoe and a'a basalts photograph best with low-angle sun.

Best Time to Visit Hell's Half Acre Lava Field #

Best in late spring or autumn for comfortable walking and best photographic light; avoid very hot summer days.

Late Spring
May-June · 6-18°C (43-64°F)
Cool mornings and clearer skies-good for walking on lava flows before midday heat.
Autumn
September-October · 5-15°C (41-59°F)
Fewer visitors and crisp air; late-day light renders the black fields with dramatic shadows.

Weather & Climate near Hell's Half Acre Lava Field #

Climate

Hell's Half Acre Lava Field's climate is classified as Cold Semi-Arid - Cold Semi-Arid climate with warm summers (peaking in July) and freezing winters (coldest in January). Temperatures range from -11°C to 31°C. Semi-arid with limited rainfall.

Temperature & Rainfall
Temperature Range
31°
Warmest Month
-11°
Coldest Month
Monthly Conditions

January

January is the coldest month with highs of -1°C and lows of -11°C. Light rainfall.

Comfort

-6°
Feels Like Freezing
-6°C
Temperature
-11° -1°

Weather

24 mm
Rainfall
3.2 m/s
Wind
Light Breeze

February

February is freezing with highs of 3°C and lows of -9°C. Light rainfall.

Comfort

-3°
Feels Like Freezing
-3°C
Temperature
-9°

Weather

22 mm
Rainfall
3.3 m/s
Wind
Light Breeze

March

March is cold with highs of 8°C and lows of -5°C. Light rainfall.

Comfort

Feels Like Cold
C
Temperature
-5°

Weather

20 mm
Rainfall
3.7 m/s
Wind
Light Breeze

April

April is cold with highs of 14°C and lows of -1°C. Light rainfall.

Comfort

Feels Like Cold
C
Temperature
-1° 14°

Weather

25 mm
Rainfall
4.1 m/s
Wind
Light Breeze

May

May is cool with highs of 20°C and lows of 3°C. The wettest month with 32 mm of rain.

Comfort

11°
Feels Like Cool
11°C
Temperature
20°

Weather

32 mm
Rainfall
3.9 m/s
Wind
Light Breeze

June

June is cool with highs of 25°C and lows of 7°C. Moderate rainfall (31 mm).

Comfort

16°
Feels Like Cool
16°C
Temperature
25°

Weather

31 mm
Rainfall
3.7 m/s
Wind
Light Breeze

July

July is the warmest month with highs of 31°C and lows of 10°C. Light rainfall.

Comfort

21°
Feels Like Mild
21°C
Temperature
10° 31°

Weather

17 mm
Rainfall
3.3 m/s
Wind
Light Breeze

August

August is mild with highs of 30°C and lows of 10°C. The driest month with just 16 mm.

Comfort

20°
Feels Like Mild
20°C
Temperature
10° 31°

Weather

16 mm
Rainfall
3.2 m/s
Wind
Light Breeze

September

September is cool with highs of 24°C and lows of 5°C. Light rainfall.

Comfort

15°
Feels Like Cool
15°C
Temperature
24°

Weather

21 mm
Rainfall
3.1 m/s
Wind
Light Breeze

October

October is cold with highs of 17°C and lows of -1°C. Light rainfall.

Comfort

Feels Like Cold
C
Temperature
-1° 17°

Weather

19 mm
Rainfall
3.3 m/s
Wind
Light Breeze

November

November is cold with highs of 7°C and lows of -6°C. Light rainfall.

Comfort

Feels Like Cold
C
Temperature
-6°

Weather

27 mm
Rainfall
3.3 m/s
Wind
Light Breeze

December

December is freezing with highs of 0°C and lows of -11°C. Light rainfall.

Comfort

-5°
Feels Like Freezing
-5°C
Temperature
-11°

Weather

25 mm
Rainfall
3.2 m/s
Wind
Light Breeze

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