Met Eireann has given the cold shoulder to hopes that Ireland will bask in a three-month heatwave this summer.
UK forecasters predicted a 28C sizzler across the water thanks to a Spanish plume of high pressure.
However, Ireland's weather woman Joanna Donnelly insisted it was impossible to forecast accurately a July heatwave this early. "What the Met Office is looking at is seasonable trends based on observations of the stratosphere," she explained.
"It's looking at probabilities of what could happen, but you can't say that the 2nd of June will be a fine and sunny day - that's nonsense.
"We have the same climate every year. Our summers are 20C at times with prevailing southwesterly winds.
"You can only predict the weather five days in advance, but that depends on what the situation is at that time of the forecast," she added.
Meanwhile, meteorologist Gerry Murphy told the Herald that temperatures will hover in the low to mid-teens for much of the week, before hitting the high teens in some areas in time for next weekend.
There will also be a lot of cloud and showers. He predicted that temperatures for the week would peak today, before starting to rise again on Saturday.
"There are no major weather events on the way, but it is a quite mixed week," he said.
"Today, any bits of drizzle in the east will clear during the morning. During the day there will be a fair amount of cloud, some bright periods and a few showers here and there.
"It will be a little bit cool on the east and south coasts, with temperatures around 11C to 14C.
"The midlands and western half of the country will be warmer, with temperature between about 14C and 17C."Brighter
"It gets a bit more unsettled after today," he added.
Tomorrow the mercury will start to dip towards the mid-teens across much of the country, with average temperatures for much of the week.
"You get some rain pushing up, and Tuesday will be mostly cloudy with some rain in most places for some time," Mr Murphy continued. "Temperatures will be between about 11C and 14C and those temperatures will be typical of the few days afterwards.
"On Wednesday and Thursday you'll have some scattered showers with a fair amount of cloud but then Friday looks brighter. So, a mixed week in store. In terms of temperatures, the midlands and the west will have the best."
While he did admit that "next weekend is very uncertain," early forecasts suggest a summery Bank Holiday weekend of dry weather with balmy temperatures peaking at between 15C and 19C.