He lamented what he believes is a decline in the significance of the Christian festival in a letter to The Times newspaper.
Shops have been selling Christmas-related items since September, which had a heatwave.
Oxford Street, Britain's most famous shopping street, is set to turn on its Christmas lights on November 6, a month-and-a-half before Christmas Day.
David Blunkett wrote: "Sir, As Christmas baubles have already arrived on Oxford Street, is it not time to reappraise our approach to the onset of Christmas?
"A moratorium on all commercial promotions of Christmas until December 1 would perhaps enhance both the celebration and restore some meaning to what, after all, is supposed to be a Christian festival."