The managing director of Pat the Baker has said the demand for bread is unprecedented, and the bakery in Granard, Co Longford has brought in extra bakers to increase production.
Consumers are stocking up on bread and other supplies in anticipation of heavy snowfall and plummeting temperatures which are forecast on Thursday and Friday.
Pictures of empty bread shelves in supermarkets have lit up social media.
Declan Fitzgerald, managing director of Pat the Baker, said they did not expect the uplift in sales and he put it down to "hype" over the weather.
He said it was good for business, but he also sounded a note of caution, adding that sales could plateau by the end of the week as a result of shop closures if a red weather alert is issued.
"It depends on how the end of the week finishes. Shops could be closed at the end of the week and we could lose it all again so I suppose we'll make hay while the sun shines," he said.
It is a similar picture in other bakeries. Brennan's Bread, based in Tallaght, said the bakery is working at full capacity and around the clock to meet the demands.
A spokesperson said while they anticipated increased demand due to the bad weather the extent of it became apparent yesterday afternoon and they've been putting exta capacity in to deal with the demand.
He said its similar to the demand experienced at Christmas time.
Johnston Mooney & O'Brien, said, "Due to unprecedented demand levels experienced yesterday and today, we have significantly increased our production to meet the dramatic increase in sales being experienced."
