On the 1 October, Conwy, Denbighshire, Flintshire and Wrexham followed by Bangor on the 10 October saw local lockdowns imposed.
Ar 1 Hydref, gosodwyd cyfnodau clo lleol yng Nghonwy, Sir Ddinbych, Sir y Fflint a Wrecsam ac yna Bangor ar 10 Hydref.