Disgwylir i bethau wella ddydd Mawrth22 Tachwedd mewn llawer rhan o’r wlad gyda chyfnodau sychach ond ambell i gawod drom.  Disgwylir i’r ardal o bwysedd isel sy’n gyfrifol am y tywydd gwlyb a gwyntog symud i ogledd Prydain nos Fawrth gan ganiatáu i amodau lawer gwell gyrraedd Cymru dros weddill yr wythnos a’r penwythnos.
Better conditions are expected during the day on Tuesday 22 November in many parts of Wales, with drier periods but still a few heavy showers. The area of low pressure responsible for the current wet and windy conditions is then expected to move away to the north of the UK during Tuesday night, allowing much improved conditions across Wales during the remainder of the week and weekend.