California · Rock climbing · Chatsworth

B1 Boulder

B1 Boulder in California has 15 bouldering routes across 11 grades.

15 routes
V0 – V8
Bouldering

Best time to visit B1 Boulder

Best months: October–June. 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

    67° / 47°

    6 wet

  2. Feb

    68° / 47°

    7 wet

  3. Mar

    71° / 49°

    5 wet

  4. Apr

    75° / 52°

    3 wet

  5. May

    78° / 56°

    1 wet

  6. Jun

    84° / 60°

    1 wet

  7. Jul

    90° / 64°

    0 wet

  8. Aug

    92° / 64°

    0 wet

  9. Sep

    89° / 62°

    1 wet

  10. Oct

    82° / 56°

    2 wet

  11. Nov

    74° / 50°

    4 wet

  12. Dec

    67° / 46°

    6 wet

Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Northridge Cal State, CA, 4.8 mi away at 904 ft. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

B1 Boulder is a climbing area in Stoney Point Park, a city-managed park in California. The park is city land, and the boulder sits among a cluster of named climbing spots, including Turlock, Cap Rock, Death Star and Lion's Head, all about 0.1 mile away. Spring and fall are the most comfortable times to visit. Typical averages from a nearby weather station show April highs around 75°F and October highs around 82°F, while July and August average in the low 90s. For more time outdoors, the Mattingly Trail and Santa Susana Pass Trail are both about a mile away. The Santa Clara River, roughly 10 miles off, offers paddling.

Routes (15)

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