If its 40 and not a puff of breeze it goes without saying you're stuffed.
As Neil mentioned north wall. This includes chicken wall. Polenta pumper wall cops a fair bit of shade. Wst pitch of siblings area can make a cool wind tunnel, nearly always in the shade. That first pitch is a good one btw. Iron curtain to supergiant in the mornimg, rap off when the sun hits.
Bouldering in the upper gorge.
The north black range isn't too far away if it looks too warm.
Have you bouldered the big arete under the wingercarerbee bridge?