The two factors that mostly triggers dormancy is the amount of daylight hours and the subsequent temperature drop. I don't think the tree has either of that in your climate. As a result the tree will be confused I would think.
Hummm...
Perhaps, but days get shorter, nights longer, there is much less light intensity, it gets colder. Today it was 11°C in the morning.
Fact is many deciduous trees know exactly when to go dormant (dropping all leaves) and out of dormancy here, so there is surely enough triggers for them. I wonder if it is not just a matter of adaptation to a different climate.
Just strolling around my street right now: