Washington · Rock climbing · Redmond

East Slab

East Slab in Washington has 6 sport climbing routes on 5 difficulty grades.

6 routes
5.8 – 5.10b/c
Sport

Best time to visit East Slab

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

    47° / 37°

    19 wet · 1 snow

  2. Feb

    50° / 37°

    16 wet · 1 snow

  3. Mar

    54° / 39°

    18 wet

  4. Apr

    59° / 43°

    15 wet

  5. May

    65° / 48°

    12 wet

  6. Jun

    70° / 53°

    10 wet

  7. Jul

    76° / 57°

    6 wet

  8. Aug

    77° / 57°

    6 wet

  9. Sep

    71° / 53°

    9 wet

  10. Oct

    61° / 47°

    14 wet

  11. Nov

    52° / 41°

    18 wet

  12. Dec

    46° / 37°

    20 wet · 1 snow

Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Seattle Sand Pt Wsfo, WA, 6.9 mi away at 60 ft. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

East Slab is a climbing area in Marymoor Park, on county land in Washington. It sits among several named climbing areas, with the South Face & S. Dihedral and the North Face both about 0.1 mile away. Summer is the most comfortable time to visit. Typical averages from a nearby weather station show July and August highs around 76 to 77°F, with only about six wet days a month. Winter is cooler and wetter, with highs in the mid-40s and rain on roughly 19 to 20 days a month from December through January. The Bridle Crest Trail is about 0.7 mile away, and the 172nd Ave Trail and PSE Trail are both within about 2.4 miles. Bear Creek, a canoeing spot, is about 3.5 miles off.

Routes (6)

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