Portland is north of SF, but has no evening chill, so in the summer people will just stay out the whole afternoon and into the night. In SF the chill tends to break things up, even in summer time.
And that extends to business hours IMO. On the rare 10 or 20 days of the year where it's not chilly in the evening in SF, you can feel a big difference in the number of people out, which will affect businesses.
People in SF are early risers. I don't really get going until 2pm and I go to bed at 2 or 3am. That would work fine in NYC but not here :-(
After the third place we switched to decaf though :)
Also, switching to decaf partway through is probably the smart thing to do :)
