There are many walls, facing all directions, with options for sun and shade. The long routes in the Chief generally get shade until early afternoon, so get up early and you can finish an 8 pitch route before the sun hits. Same is true for Grand Wall base cragging- shade in morning. The North Walls are in shade even longer, till 4 pm or so.
For shady afternoon crashing, visit Murrin and/or Chek. Both start seeing shade early afternoon.
The Bourdon guidebook has good conditions info if you need more detail.