My family & I are going to stay at our timeshare in Carlsbad. It's a 5 star hotel & sounds really nice. I just don't know when I should reserve my room. I don't want to go when it's to cold to enjoy the beach & yet not too hot to visit the theme parks. I've looked at the weather reports in July & August & they all say cooler than 80deg F. Can it really be that cold in Carlsbad in the summer?