You'll have four sea days going to Hawaii , another four to Ensenada and one between Ensenada and San Francisco.
The first two and the last could be chilly during the day and night . I would take a light sweater or jacket for those sea days . The islands will be warm during the day and do cool off at night . Depending on the weather the remaining sea days might be warm or cool during the day.
I define cool as less than 65F
Warm as 65F to 75F
and hot as anything over 75F
SS Ithaca , Volendam , Mariner of the Seas (x2) , Veendam , Coral Princess , Island Princess (x3) , Emerald Princess,Sapphire Sapphire (x3),Diamond Princess