Adult migrants arriving in the Big Apple will now only be allowed to stay in city-run shelters for 60 days, Mayor Eric Adams said Wednesday — as the city continues to struggle with the sheer number of asylum seekers flooding in.

Adams said officials will start alerting adult migrants currently in the city’s care of the new rule within the coming days.

The new shelter stay restriction won’t apply to migrant families with children, he added.

“We cannot continue to absorb ten of thousands of newcomers,” Adams said, adding the new limit was one of the “difficult choices” the city has been forced to make in order to cater for the relentless influx.

Under the new restriction, migrants unable to find alternate accommodation by the end of their 60-day stay will then have to reapply for a new placement at the city’s asylum seeker arrival center.

“With more than 54,800 asylum seekers still currently in our care, this effort will intensify adult asylum seekers’ casework services over the next two months to help them take the next step on their journey and ensure we have a bed to place children and families at night,” Adams said.

The mayor insisted the goal wasn’t to force migrants out of shelters and onto the streets, saying each migrant given notice will have multiple touch points with case workers to discuss their options and plan for the next steps.

“Our goal is not to increase street homelessness,” Adams said, adding the new measure was to ensure there were enough beds for migrant families.

The mayor’s announcement came as roughly 2,800 migrants arrived in the Big Apple last week — adding to the more than 90,000 that have poured in since April last year.

More than 54,800 asylum seekers are currently staying at one of the city’s 188 emergency shelter sites set up to cater for the migrant influx.

“As we continue to tackle this humanitarian crisis, we must devise novel ways of moving people within and through our system to find where they will ultimately settle,” Deputy Mayor for Health and Human Services Anne Williams-Isom said. 

“The city is and will continue to help individuals and families find shelter and connect with services at their initial connection point with us. We must then work together with partners at all levels of government to find options for where people will settle in order to continue relieving the pressure on New York City.”