That sometimes happens here too, the sea breeze gets here after 3 or 4 pm
But listen, the sea breeze isn't all that it's cracked up to be, all it does it make it more humid.
May I introduce you to July 4, 2010, when it was 101 degrees with a 45 dew point at JFK?
That is FAR better than any sea breeze, you don't sweat in it and it's GREAT running weather!