"Monday morning will be largely dry with bright or sunny spells, the best of these in Munster,” the national forecaster said.
"In the afternoon and evening, some showers are likely, especially over the northern half of the country, some of them heavy.
"It will be warm with highest temperatures of 18 to 23 degrees and light to moderate easterly breezes.”
Tuesday, Wednesday and Thursday will all be mainly dry with sunny spells and just a few showers at times.
"Highest temperatures of 19 to 22 degrees for much of the country, but not quite as warm in eastern coastal areas where temperatures will reach about 17 or 18 degrees due to mainly light to moderate easterly breezes,” the forecaster said.
"Lowest night time temperatures will range from about nine to 12 degrees.”