Staying near San Clemente, CA, area in July. Looking for wing friendly spots or launches (assuming some wind)? Any help appreciated.

Wind tends to be lighter in summer in SoCal so you're looking for an afternoon seabreeze to kick in (which might be 8-15kt). Also, if you're able to drive a couple of hours then options open up... This guy has some good videos from local areas:

1. Belmont Shores/Cabrillo (around Long Beach) are the closest i'm aware of. I went to Belmont 2x and did not have good winds, it's pretty urban and not that nice. Big kiting scene. I think you would want a 6-8m wing there most of the time and a big foil.
2. Lake Perris, Lake Piru, Lopez Lake, and Lake Isabella could have good afternoon wind patterns and are probably 1-3 hours drive (I haven't been there personally, but friends have).
3. Santa Barbara (Leadbetter Beach) and Avila Beach/Port San Luis are fun areas I've been to with good afternoon sea breezes or strong winds on the right weather patterns. There's several other areas to check out north of Santa Barbara (e.g. Pismo beach) that are more challenging. Water is colder there vs. SoCal so you would want a summer wetsuit.

Ventura coastline has a lot of beach access but probably tougher to find good conditions.

two different wind patterns down there: thermal and clearing (NW)

San O picks up the NW and there are some guys who wing there. Also further down in San Diego Mission Bay there are some lighter regular winds. Further north, Seal Beach picks up the NW and Cabrillo picks up the WSW thermal wind. Cabrillo is several knots windier than Belmont which is onshore, full of kiters and stingrays. Watch out for stingrays at Seal Beach also. Further north Leo Carrillo can have awesome waves and thermal wind... and just past that County Line works on the NW. Lots of other spots, but I've only windsurfed/winged a handful of them.

As far as summer goes, Cabrillo in San Pedro is probably the most reliable for wind but June Gloom can sometimes screw it up.