People say this about a lot of places in California, but it's not my experience. "Perfect weather" seems to mean a dystopia of identical days, no changes, no wind, no clouds, just constant sun. Living in Alameda/Oakland drove me crazy in the summer. Nothing ever changes, every day is exactly the same. Yuck.
Santa Monica weather isn't nice for everyone. But I get it, there's a lot of sun and not much rain.
https://en.wikipedia.org/wiki/Santa_Monica,_California#Clima...