There has been a 64% increase in the number of people sleeping rough in Dublin since January this year.
Inner City Helping Homeless said they have found 148 people following a recent headcount on Wednesday night.
Chief executive of the charity, Anthony Flynn said it is a shocking increase.
He said: "We saw major reductions in regard to bed implementation in the initiative that was implemented through the winter months.
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"We are seeing the numbers rise and rise again and in the next couple of months they will continue to rise and we've got to tackle the problem head-on. The minister needs to put a rough sleeper programme in place to tackle the issue head-on."
