Since the start of the war, welcome centers in Wales have served as temporary housing for Ukrainian refugees.
To assist them in finding long-term housing, the Welsh government claimed it is a "concentrated effort.".
The need for a "comprehensive plan" to house the refugees in the event that the centers close, according to one MP.
Anyone unable to relocate into long-term housing, according to a Welsh government spokesperson, will be offered "alternative accommodation.".
The Welsh government has stated that the closures will happen gradually as people find new housing.
Families in Wales had the opportunity to become hosts when the conflict in Ukraine broke out a year ago, offering a secure location for refugees to stay.
The Welsh government also established welcome centers, which are converted hotel-type structures.
According to the most recent data, the Welsh government has helped more than 3,000 Ukrainians since the war started.
The Welsh government claimed that the plans are "not funding-related" and are a component of an effort to assist Ukrainians.
But Hywel Williams, the Arfon MP, is requesting details on how residents of such centers will have access to housing.
We must make provisions for people if they are to be relocated into the community, he said.
"Making a closure announcement in the hopes that something might come up is simply unacceptable. The closure of these locations is not warranted. ".
He claimed that the Welsh government had provided "official confirmation" to Gwynedd Council that the welcome centers in the region would close "in the summer.".
The safety and wellbeing of these vulnerable people in the centers is our top priority, he continued.
In addition to councils and housing associations, the Welsh government continued to "play a hugely successful role in welcoming Ukrainian people to Wales, helping them move on into longer-term accommodation," according to a spokesperson for the Welsh government.
"Alternative housing will be made available to those who are unable to leave a welcome center and move into longer-term housing, whether it be with hosts, private housing, or social housing in Wales.