Clayton Beach is one of the most popular bouldering spots in Bellingham. A flexible set of problems along the beach and coastline yields great views, good holds, and overhangs. Depending on the tide, you can explore northern and southern ends of the beach and find interesting traverses, with an occasional overhang over shallow water. Be sure to get to Clayton Beach during low tide for the most options. Even though the beach is sandy, it’s recommended that you use a crash pad and be careful with the sandstone rock.
Some of the best year-round hiking in Bellingham is also climbing territory around Blanchard Mountain in the Chuckanuts. The Viewpoint known as Oyster Dome requires some hiking to reach. The face is a majority of 5.9, 5.10's, with one known 5.7. The face of Oyster Dome and the sport/trad climbing there is an option (be wary of aged bolts and anchors), but the Samish Wall and Upper Step Ledges are most popular.
On rainy days, head to Vital Climbing Gym for some indoor bouldering. This new facility is about a block from Aslan Brewery where you can get discounted organic craft beer on Tuesdays when you come from the climbing gym.