Ireland will be as hot as Majorca today - but make the most of it while it lasts.
Temperatures across the country are expected to reach 24C, matching the Mediterranean.
However, with the mercury set to fall by mid-week, Met Eireann forecaster John Eagleton said today will be the hottest for a while.
Temperatures are expected to fall to 17C tomorrow along the Atlantic coast.
The east of the country will fare better, with temperatures expected to be in the low 20s.
Next week will be mostly dry, but there will be some rain and drizzle with temperatures between 15 and 17C.
Met Eireann is advising everyone to make the most of the warm weather today, and there are plenty of events taking place to ensure a fun-filled weekend.
Four-hundred brave souls are expected to take the plunge in the 97th annual Liffey Swim taking place along Dublin's quays this afternoon.
The men's race starts at 1.30pm at Rory O'Moore Bridge beside the Guinness brewery, followed by the women's race at 2.30pm.
Thousands of spectators are expected to line the quays and bridges as swimmers of all ages and levels swim past the Four Courts and Ha'penny Bridge to wind up at the Custom House.
Meanwhile, author Rosita Sweetman will open the new section of The Icon Walk honouring Irish Women Writers at 2pm today as part of the Use the Lanes Cultural and Arts Festival taking place in the laneways of Temple Bar this month.
And tomorrow, thousands of runners will hit the streets of the capital in the Rock 'n' Roll half-marathon and 10km race.