G'day mate, welcome to WA.
Go down to Brighton beach (just a bit south of Scarborough Beach) now and you will surely find kites.
The seabreeze usually kicks in some time in the afternoon, and once work is over you will find plenty of kites after about 4pm.
Scarborugh / Brighton is good for some waves, Pinaroo Point (15 minute drive north of Scarborough and just past the Hillary's boat harbour) is good for some smoother water. See ou out there !!!