California · Rock climbing · June Lake

Hump Boulder

5 bouldering routes at Hump Boulder, California.

5 routes
V0 – V5
Bouldering

Is Hump Boulder open right now?

Alert in the area

The Forest Service lists 4 alerts for Inyo National Forest.

As of · Source: USFS · Inyo National Forest. Agencies don't list every closure — check before you go.

Best time to visit Hump Boulder

Best months: May–September. Best months have typical highs of 55–85 °F, lows of 30 °F or warmer (32 °F where the station doesn't record snow), at most one snowy day and no more than 12 wet days.

  1. Jan

    41° / 17°

  2. Feb

    41° / 18°

  3. Mar

    45° / 22°

  4. Apr

    51° / 27°

  5. May

    60° / 35°

  6. Jun

    70° / 42°

  7. Jul

    78° / 49°

  8. Aug

    77° / 47°

  9. Sep

    71° / 40°

  10. Oct

    61° / 30°

  11. Nov

    49° / 23°

  12. Dec

    41° / 17°

Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Mammoth Lakes Rs, CA, 12 mi away at 7,804 ft. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

Hump Boulder is a bouldering area in the Mono Lake Ranger District of Inyo National Forest in California, managed by the Forest Service. It sits among a cluster of climbing spots, with The Ghetto and June Lake Slabs each about 0.1 mile away and Boulder with a View about 0.6 mile off. The climbing here is all bouldering, with five routes on record. Grades run from V0- to V5, so the area suits climbers looking for a range of challenges from easy to more difficult. Problem E is the easiest at V0-, Problem B is V0, and Problem C is V5. Summer is the most comfortable time to visit. Typical averages from a nearby weather station at Mammoth Lakes show July highs around 78°F with lows near 49°F, while winter highs stay around 41°F. June Lake Campground is about 0.8 mile away, and the June Lake Loop Trail is about 0.9 mile off. Oh Ridge campground is about 0.6 mile away, and the Reversed Peak Loop hike is also about 0.6 mile away.

Routes (5)