The recent heatwave appeared to be coming to an end last night with sudden downpours affecting several parts of the country yesterday afternoon and evening.
According to Met Éireann, more changeable weather could now be expected over the weekend.
Forecaster John Eagleton said that today should be "wet and windy", with more widespread heavy showers in all parts of the country. These would occur particularly in the morning, before clearing in the afternoon. Highest temperatures would be between 17 and 21 degrees in blustery winds, he added.
Tomorrow would be brighter, although it would tend to have scattered showers and breezes.Mr Eagleton said the weather over this weekend and into next week should be cooler than it had been during the recent warm spell.
He said temperatures were unlikely to reach the mid-20 degrees mark.
"I'd be fairly confident this will not change next week, but it may change in mid-August," Mr Eagleton said. "Temperatures did reach a very high level in recent weeks. It was a very warm spell.
"Generally speaking, you would see temperatures at this level once in a decade, but that does not necessarily mean this is a sign that it won't happen again next year."
The official three-day Met Éireann forecast for tomorrow onwards is for a mix of sunny spells and showers each day, with some heavy showers in places.
There is also a chance of some longer spells of rain at times (mainly in the south and southeast on Monday).
Daytime highs will mostly be between 18 degrees and 22 degrees.
This week the Met Éireann station at Casement aerodrome in Baldonnel, Co Dublin, reported a period of "absolute drought" between July 9th and July 23rd.
This occurs when there is no more than 0.1mm of rainfall recorded for a minimum of 15 consecutive days.
Earlier this month temperatures also went past the 30 degree milestone in such places as Athy, Co Kildare, Kilkenny and Shannon airport.