I searched it up and you're right but I'm surprised that 77 is the average high because just a month or two ago it was consistently in the 80s and low 90s for a couple weeks. And that's not just a one time thing, it's usually around that temperature for a couple weeks to a month atleast once a year.Well the average high in San Diego in the warmest month is 77 degrees so they won't get too hot.