All parts will have a dry day on Tuesday with some bright or sunny periods, forecasters have said.
It will cloud over from the west this afternoon but it will feel warm in the sunshine with light winds and a maximum temperature of 20C.
By Tuesday evening, it will be dry and remain so for the rest of the night with clear periods. Some light and patchy rain will spread from the west in the afternoon and there will be a maximum temperature of 19C.
The outlook for Thursday to Saturday is mainly dry and cloudy at first on Thursday, with brighter weather with a few showers developing in the afternoon.
There will be sunny spells and a few showers on Friday and Saturday.