Gillian Tasker, heritage services leader at the library, said a team of volunteers would work with staff and heritage partners, including Whanganui Regional Heritage Trust and the local branch of the NZ Society of Genealogists, to pack the collections ready to relocate to Ridgway St.
Ms Tasker said the plan was to reopen in the new location by Monday, November 2 but she said if the shift went smoothly the Alexander could be up and running earlier.
"We want to ensure our community continues to be able to access our Whanganui heritage and stories," she said.
"We're excited to be able to continue offering our comprehensive research service to anyone seeking information on local history, family history or Whanganui's heritage buildings in the downtown space."
Ms Tasker said anyone needing research services or information during the time the library was temporarily closed should email library staff at Heritage@wanganuilibrary.com or phone (06) 349 1000.