Sunseekers bask under blue skies as temperature hits tropical 25C
Dry, bright and sunny until at least Wednesday - say Met Éireann
The hottest day of the year so far saw sunseekers crowd beaches and parks, driving profits up in the leisure industry by as much as 40pc as temperatures hit 25C.
Newport, Co Mayo, experienced the highest temperatures of between 22C and 25C throughout the day.
Dublin and Galway also enjoyed a balmy 19C, as families basked under blue skies.
Limerick will hit 19C today as the mercury drops a little across the rest of the country, with some rain expected towards the end of the week.
Catherine Flynn, manager of Newport House country house hotel, said: "We've been blessed. People are out and there's a great holiday atmosphere down here.
"We have visitors from Switzerland and Germany who can't believe how warm it is; they've been saying how dreadful the weather is on the continent."
Harry McManamon, manager of the Grainne Uaile restaurant in Newport, said trade had boomed because of the mini-heatwave.
"It's absolutely beautiful. We've had a huge increase in trade... We had such a lean winter businesswise and we needed this. The sun brings everyone out and about, thankfully."
Met Éireann forecaster Liz Gavin said: "The warmest temperatures have been in Newport with 22C and 25C.
"Mayo has, with the rest of the country, been generally dry and settled and this weather will continue up until Thursday or Friday, but there'll be a breakdown then with possible rain and temperatures will be between 15C and 18C."
Ms Gavin said the warm weather had been caused by "huge pressure" from Greenland and temperatures had risen to slightly above average nationally for this time of year.
Temperatures reached 16C yesterday in Cork and a maximum of 15C is expected there today.
Families attended the sold-out final day of the Cos Cos Sean-Nós Festival in Sligo yesterday as musicians, singers, and storytellers welcomed in the first days of summer with temperatures in the town reaching 16C.
And ice-cream sales soared as sun worshippers descended on beaches across Dublin.
Teddy's ice-cream sellers said they had sold about 4,000 ice-creams at six of their units across the city and in Bray yesterday thanks to 19C temperatures.
Meanwhile, 5,000 fitness enthusiasts and yogis flocked to health and well-being festival Wellfest in Dublin's Herbert Park.
Joe Wicks, aka 'The Body Coach', attended the event.
And, although we're not in for the same heat as the weekend in the coming days, the country will still experience some warm temperatures.
Tomorrow is set to be dry, bright and fairly sunny, albeit with a few cloudy periods.
Top temperatures will still be hitting 16-19 degrees Celsius.
Wednesday will also be a dry, bright day with a mix of sunny spells and cloudy peruids. Temperatures are expected to hit 16-19 degrees in the north and west, whereas the temperatures in the south and east will dip to 13 or 14 degrees.
And, on Thursday, there will be some hazy sunshine but it looks as if the rainfall could be expected.
As for next weekend, Met Éireann are predicting it to be "fresh, cool and more changeable".