A mini-heatwave could be on the way, as Met Éireann predicts the weekend's good weather could return later in the week with temperatures reaching the low twenties.
The forecaster said many places would be dry today, with top temperatures of 18C to 21C.
Forecaster Pat Clarke told the Irish Independent: "As the week goes on, temperatures will be building so we'll probably have temperatures of 20C or 21C today, getting into the low 20s later on and maybe even a little bit higher."
The heat will really start to gather strength tomorrow, but there's still a chance of some cloud cover to dampen the hopes of sunseekers.
"Wednesday and Thursday will both be very warm or hot days in many parts of the country, with a good deal of sunshine likely.
"With high humidity and southerly wind flow, there will be times when we'll have some cloud and rain and also maybe some sea fog which might shroud some of our holiday resorts at times. The extent of that could vary quite considerably day to day," explained Mr Clarke.
Met Eireann predicts a rollercoaster ride midweek, as high humidity also means a good chance of thundery outbreaks.
"There is a likelihood of some thundery showers breaking out as we head into Wednesday, but overall it's warm and humid.
"Temperatures in Europe have been as high as 40C, but we've got the cooling effects of the Atlantic winds. For some people that's quite welcome. It's not going to be dry all the time, and it's not going to be sunny all the time, but in sunshine it will be very pleasant."
Sunworshippers should get out and enjoy the sunshine as much as possible during the week, as it remains unclear whether it could stretch as far as the weekend.
"The weekend might be a bit far to say, but at the moment it doesn't look like high temperatures will persist, so we just have to see how that pans out," said Mr Clarke.
As the weather continues to heat up, so too does the risk of gorse fires.
On Saturday, a blaze erupted on Killiney Hill in south Co Dublin.
Two units from Dublin Fire Brigade (DFB) battled the blaze.
However, yesterday's hot temperatures caused another blaze and up to three units tackled the fire from mid-afternoon until late last night.
Last week, members of DFB battled another blaze on scenic Howth Head.
The fire raged so intensely that gardai were called to help control the area while firefighters fought to quell the flames.
No one was injured in either incident. A DFB spokesperson warned people to be extra vigilant during the warmer months.
"Sometimes these things are natural and sometimes they can be influenced by man," he said.
"When the gorse is dry, and the sun is warm it can ignite quit quickly.
"But sometimes they can be helped by things like discarded glass bottles or disposable BBQs."