The end of Friday's 'heatwave' is unfortunately already in sight with the weather set to become dramatically cooler by the end of the day.
Met Eireann has forecast warm with sunny spells in the south and east on Friday with highs of 25C in many parts of Leinster and Munster.
In a stark contrast on the other side of the countyr, Connacht and Ulster won’t see the same sunshine as it will be cloudier and cooler with a chance of showery patches of rain as temperatures reach around 15C.
However, the sunshine in the south and the east won't last long as a cold front is set to spread across the country from the northwest through the afternoon.
A band of rain bringing much cooler temperatures will move towards the south east, and it will become noticeably cooler everywhere by Friday evening.
Currently the weekend is set to bring much more unsettled conditions. In some parts, it will be about 10 degrees cooler on Saturday than the previous day with highest temperatures of 13 to 16 degrees and scattered showers possible.
Here is Met Eireann's outlook for the rest of the week:
Wednesday, June 15
Staying fairly cloudy today across the north and west of the country with occasional showery outbreaks of rain. Elsewhere it will be mostly dry and brighter, with just a slight chance of an isolated shower, while the best of the sunshine will be in the southeast. Highest temperatures of 15 to 21 degrees, coolest in the northwest, with light to moderate southwest to west winds turning fresh at times there.
Scattered showers will continue in the west and northwest overnight, while other areas will be dry with some clear spells. Generally temperatures not falling below 9 to 13 degrees with some mist patches developing as light southerly or variable breezes fall calm at times.
Thursday, June 16
Cloudy with outbreaks of rain in the northwest and highs of 15 to 18 degrees. Warm and dry with sunny spells elsewhere, while highest temperatures will reach 18 to 22 degrees in light to moderate southerly winds.
A mild night on Thursday, staying dry and clear spells across much of Leinster, Munster and south Connacht, but cloudier elsewhere with scattered showery rain, especially in west Ulster where it will become heavier and more prolonged towards morning. Lowest temperatures of 11 to 15 degrees in mostly moderate southerly breezes.
Friday, June 17
Dry, warm and sunny to start in Leinster and Munster. Cloudier and cooler in Connacht and Ulster with rain becoming more persistent. Becoming cloudier and cooler across the country through the afternoon with a band of rain gradually sinking southeastwards, breaking up as it does so. Highest temperatures by early afternoon in Munster and southeast Leinster of 20 to 24, or possibly 25 degrees, with highs of 15 to 20 degrees elsewhere, coolest near northwest coasts. It will become noticeably cooler everywhere by evening as mostly moderate southerly winds, veer northwesterly.
Becoming mostly dry on Friday night with some clear spells developing. Fresher than previous nights with lowest temperatures of 8 to 12 degrees in a light northwesterly wind.
Saturday, June 18
Some sunny spells in the morning but cloud will bubble up through the day with a few showers possible in the northwest, and the chance of some rain pushing into southeastern fringes later in the day. Highest temperatures of 13 to 16 degrees in moderate to fresh north to northwest wind.
Still quite a bit of uncertainty for Saturday night but currently it looks like showery outbreaks of rain will push in from the southeast affecting parts of south Leinster and east Munster as the night progresses. This may become heavy at times also. Mostly cloudy elsewhere with isolated patches of rain and drizzle. Lowest temperatures of 9 to 11 degrees in mostly moderate northerly wind.
Sunday, June 19
Currently Sunday looks like it will be fairly cloudy with some heavy outbreaks of rain continuing in the south and east, and, in contrast to earlier days, the best of the sunny spells will be in the northwest. Highest temperatures of 13 to 16 degrees in moderate to fresh north to northeast winds.
