First time on a Fall cruise

[reeb4]

We are heading out on Navigator at the end of the month.  First time cruising in the Fall.  Los Angeles weather looks to be highs in the upper 60's/low 70's and Ensenada looks a couple of degrees warmer.  Once sailing, is the breeze pretty cool?  Light jacket weather?  Shorts?  I'd appreciate guidance from those that have traveled this ti9me of year in these temps.  Thank you!