TEMPERATURES are set to rise dramatically, bringing an end to the recent unseasonably cool conditions, writes Fergal Gallagher.
The mercury is predicted to soar by as much as 10C over the weekend, from as low as 14C today to highs of 24C on Sunday.
We may, however, be brought back down to earth on Monday by thunder storms coming up from the Bay of Biscay.
And forecasters are warning that the weather over the next few weeks may make or break the summer.
John Eagleton, forecaster with Met Eireann, said that after a chilly June things are finally set to improve this weekend.
"We've only really had one real summer's day this year. That was the Friday before the June bank holiday," he said.
"Sunday is the big day, we should get 21C to 24C in most places, with the east and the midlands likely to get the best weather."
The west isn't predicted to be as fortunate with conditions likely to remain misty and drizzly.
Weather is due to become unsettled next week, before picking up again for the following weekend.
But Mr Eagleton believes the first two weeks in July will be a crucial.
"I'm a bit of a believer in St Swithun's Day (July 15) to be honest.
" If the first two weeks of July are wet, you can throw your hat at the summer," he said.