Broadway theaters will remain dark through June 7 because of the coronavirus pandemic, but industry professionals said it might be weeks, if not months, after that date before shows can open.

The Broadway League, the industry trade group, announced the extended shutdown Wednesday. Shows closed on March 12 as part of statewide efforts to contain the new coronavirus and were originally slated to reopen April 12.

League President Charlotte St. Martin said it is still difficult to determine a true opening date for Broadway. It will depend not only on when New York state lifts restrictions on gatherings in venues, but also on when producers are able to get their casts fully rehearsed and ready, she said.

On top of that, the industry is mindful that it might take time before theatergoers are comfortable coming together, even if state officials give the green light, Ms. Martin said.

“We won’t bring the shows back until we feel there’s enough of an audience to be there,” she said.