I helped deliver a 35' sailing
trimaran mid May several years ago.
FWIW, the owner had subscribed to a professional
weather service, and I'm really glad he did.
After two days of beating to
weather to grab a NW
wind system, we JUST managed to stay in the tail end of it for the duration of the trip to
Newport Beach.
The whole 1250 mile trip from Whidbey Island took 7 days.