Thomas P. Campbell resigned under pressure on Tuesday as the director and chief executive of the Metropolitan Museum of Art, after months of growing concerns among staff members and some trustees about its financial health and his capacity to lead the largest museum in the country.

Met officials said that Mr. Campbell would stay on until June, the end of the fiscal year, but that Daniel H. Weiss, the Met’s president and chief operating officer, would be simultaneously serving as interim chief executive. Mr. Weiss will work with Mr. Campbell and the museum’s leadership on a transition plan while the Met seeks a new director, one of the most powerful in the art world.

“We are not looking to appoint a new director immediately,” said Daniel Brodsky, the museum’s chairman, in a letter to board and staff members, “but instead will take some time to consider the leadership needs of the museum in a thoughtful and deliberative way.”

The Met said that Mr. Campbell, 54, had made the decision to leave the job he had held for eight years. But the circumstances surrounding his departure point to his being forced out. As The New York Times reported extensively in an article in early February, Mr. Campbell’s financial decisions and expansion plans had been criticized by some trustees, curators and other staff members. During the last couple of years, despite the museum’s record attendance, much of his original agenda was rolled back because of the museum’s economic difficulties, including a soaring deficit.