California · Rock climbing · Yosemite National Park

B-1 Boulder

B-1 Boulder in California has 7 bouldering routes across 5 difficulty grades.

B-1 BoulderPhoto: msprague, CC BY-SA 2.0 (via Flickr)
7 routes
V4 – V8
Bouldering

Is B-1 Boulder open right now?

No closures listed

The National Park Service lists no closures for Yosemite National Park.

As of · Source: NPS · Yosemite National Park. Agencies don't list every closure — check before you go.

Best time to visit B-1 Boulder

Best months: March–June and September–November. 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

    48° / 29°

    9 wet

  2. Feb

    51° / 30°

    9 wet

  3. Mar

    57° / 33°

    10 wet

  4. Apr

    63° / 38°

    8 wet

  5. May

    70° / 45°

    6 wet

  6. Jun

    80° / 51°

    3 wet

  7. Jul

    89° / 57°

    1 wet

  8. Aug

    89° / 57°

    1 wet

  9. Sep

    83° / 51°

    2 wet

  10. Oct

    71° / 41°

    3 wet

  11. Nov

    56° / 32°

    6 wet

  12. Dec

    46° / 28°

    8 wet

Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Yosemite Park Hq, CA, 1.4 mi away at 4,018 ft. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

B-1 Boulder is a climbing area in Yosemite National Park in California, managed by the National Park Service. It sits within the park's own boundaries, and a fee is charged for access. Spring and fall are the most comfortable times to visit. Typical averages from a nearby weather station show May highs around 70°F and October highs around 71°F, while July and August average highs near 89°F. Sentinel Boulders and the Four Mile Trailhead are both about 0.1 mile away, and the Sentinel Creek Area is about 0.4 mile off. For an overnight stay, Lower Pines Campground is about 1.9 miles away.

Routes (7)

Facts about this crag

Rules & access

Fee
Yes

Source: National Park Service API

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