I'd do it early next spring.

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I moved a three year old Montmorency cherry tree back around late February this year. The tree responded well and even produced a small bowl of cherries 3-1/2 months after being moved. Keep as much of the dirt around the roots in tact as possible. Using a sharp drain spade (14" to 15" long blade probably 6" wide), I made an appx 3 ft diameter circular dig at a 45 degree angle toward the trunk. I then pried it out of the ground with a spud bar and onto a movers dolley. With our wet clay soil, this was likely as large of a clump of dirt that I could possibly have got out of the ground by hand. It broke up a bit during the move but since everything was wet and dormant it did fine. For its new location, I had a 6" high berm of slightly compacted top soil that I set the tree on top of, then piled more topsoil around it making a 5 ft wide, 18" high mound. Because of my poorly draining soil, this is how I plant most of my trees now. Your soil conditions will most likely vary.

I am in Ohio with potentially sub zero winter temps. With your milder winter temps you may be able to move it earlier in the winter, but make sure it is dormant.

hello.I sent you a message, please write me-Konrad..just outside of Edmonton Alberta