Park authorities said the delay is due to major conservation and refurbishment work on the Chopin monument and its surroundings.
The decision has drawn criticism, including an online petition whose organizers described the seven-week suspension of the concerts as "a blow to the heart of Warsaw’s cultural identity."
They have called on organizers to relocate the recitals to another venue within the park.
The tradition of open-air Sunday Chopin concerts at the foot of the composer’s monument dates back to 1959.
The recitals are typically held twice every Sunday—at noon and 4 p.m.—from mid-May until early September, and have attracted around 3 million listeners over the decades.
Last year's 66th season featured pianists from Poland and countries including Bulgaria, Brazil, China, Japan, France, Canada, Lithuania, Britain and Italy.
This year marks the centenary of the Chopin monument in Łazienki Park. The bronze statue, destroyed by German forces in May 1940, was reconstructed and unveiled in its current form in 1958.
(mk/gs)