Wales will have a crowd of 8,200 for each of their home Test matches against Canada and Argentina next month.
Due to the coronavirus pandemic, it will be the first time crowds have been allowed at the Principality Stadium since Wales’ Six Nations defeat against France in February last year.
Wales kick off their summer series by hosting Canada in Cardiff on July 3, followed by appointments with Argentina on July 10 and 17.
Tickets will go on sale to Welsh Rugby Union member clubs on Tuesday, the WRU said.
“There is nothing like the atmosphere at Principality Stadium on matchday, and I know our players are keen to get back out in front of a crowd,” WRU chief executive Steve Phillips said.
“Opening the stadium to a reduced crowd is a positive step forward which will enable supporters to return and enjoy live international rugby once again in Wales.”
And Principality Stadium manager Mark Williams added: “This has required months of complex planning, but we are delighted to be in a position where we can finally welcome fans back into the stadium.
“The layout of our stadia and the public concourses determines the maximum capacity we can hold in line with Welsh Government’s requirements of a two-metre social distance.
“With the maximum number of spectators set at 10,000 by Welsh Government, for us, this means a maximum capacity of 8,200 fans with the required social-distancing measures in place.”
Wales head coach Wayne Pivac has selected five uncapped players in his squad for the three Tests, with centre Jonathan Davies named as captain.