There's been an increase of 269 in the number of people who are homeless.
Figures from the Department of Housing show 9,099 people were registered as homeless in November.
That's up from 8,830 in October.
2,548 children are without a home, while Dublin accounts for 70 per cent of the homeless population.
Emma Kilkenny, Head of Fundraising & Communications at Dublin Simon Community says: "We are concerned for the months ahead as financial pressures, rising costs and widespread Covid-19 cases bring many people closer and closer to the poverty line.
"Every Christmas, we see an increase in the number of people in emergency accommodation services for a variety of reasons, with numbers declining after the festive period. However, this year we are in a very different situation as Covid-19 cases in the community have reached an all-time high.
"This is having a very real impact on people who are in unstable accommodation or employment, with our teams doing all they can to keep people in their homes and preventing them from being pushed into homelessness."