We rent in Carmel Valley and we were able to get through the whole summer without turning the airconditioner on. Before that, we lived in Mira Mesa and it was breezey where we lived, though I turned on the A/C periodically. But, when we drive through Poway in the summer ITS BRUTAL without the A/C on in the car.
This is not to slam Poway. Aside from the hotter temperatures, we love the area and were tracking property there for a awhile. (we have freinds we love to visit there and my wife used to work in the area).
But, if we can afford to buy a place closer to the coast in 3 to 5 years, we’ll do it despite the higher premium.