Some parts of the country could see temperatures hit as high as 27 degrees today.
Counties in the midlands are expected to feel the heat, with coastal areas reaching highs of 24 degrees.
While high temperatures may continue into tomorrow, it'll be cloudier than previous days.
Cathal Nolan from Ireland's Weather Channel, says today's temperatures are well above what we are used to at this time of year:
"We certainly can expect to see very high temperatures today, right across the country."
"Typically at this time of the year we would expect to see temperatures coming in at 17 or 18 degrees, but today we can expect up to 27 degrees in some parts."
"It's probably midland areas that will see the highest temperatures, while coastal areas will reach around 23 or 24 degrees."
