It should remain around the mid teens for the next few days.
Temperatures could reach as high as 18 degrees in Ireland on Tuesday, according to Met Éireann.
Before then, it will be a mostly cloudy start on Monday, with patchy rain and drizzle at times.
During the afternoon, that drizzle will mainly become confined to Atlantic coastal counties.
While it will continue to be generally cloudy, some sunny spells will occur - especially in the east as highest temperatures range from 12 to 17 degrees.
Apart from some drizzle in Connacht and Ulster, it will be mostly cloudy and dry on Monday night with temperatures of 7 to 10 degrees generally.
It also should be mostly dry on Tuesday, with just isolated patches of drizzle near northwest coasts, where it will stay cloudy.
Sunny spells will develop elsewhere, the best of these being in Munster and south Leinster, as temperatures from 13 to 18 degrees are forecast.
From Tuesday night, cloudier conditions will spread to all parts of the country by morning as temperatures fall to 5 to 9 degrees.
Wednesday will be mostly cloudy with the best of any bright spells in the southeast.
Outbreaks of rain and drizzle in the northwest will persist through the morning and gradually break up during the afternoon, with just occasional patchy rain and drizzle elsewhere.
It will be much cooler than previous days with highest temperatures of 9 to 13 degrees, generally, though it will be a degree or two warmer in the southeast.
After a mostly dry Wednesday night with temperatures of 4 to 8 degrees, Thursday will see good sunny spells and passing clouds.
Generally, temperatures will range from 10 to 13 degrees, increasing to between 14 to 17 degrees in the southwest.
Friday will be dry with good sunny spells, though cloudier at times over the northern half of the country with temperatures of 9 to 13 degrees.
It will remain dry with sunny spells on Saturday, though some patchy cloud will develop for a time during the middle of the day.
Again, highest temperatures of 9 to 13 degrees are forecasted.
For Easter Sunday, Met Éireann's early forecast suggests weather conditions will turn more unsettled and cooler.
