Jill Biden, the first lady, will travel to Japan next week to attend the opening ceremony of the Summer Olympics in Tokyo, scheduled for July 23, her office said on Tuesday.

It will be the first solo trip abroad for Dr. Biden, whose traveling schedule currently outpaces her husband’s. Dr. Biden has been a frequent traveler in service of promoting the Biden administration’s coronavirus vaccine efforts domestically, and her appearance in Tokyo comes as the host city extended a state of emergency in response to a spike in coronavirus cases.

Officials have barred spectators from most of the events and urged residents to watch the proceedings on television at home. The declaration of the state of emergency disrupted carefully laid plans to revive the Games, which have already been delayed a year because of the pandemic.

Mr. Biden will not attend the Games, but he has voiced his support for them to the country’s prime minister, Yoshihide Suga. During an April visit to the White House, Mr. Suga told reporters that Mr. Biden “once again expressed his support” to host the events.

Jen Psaki, the White House press secretary, told reporters last month that the White House would send a delegation from the United States, “but we will continue to also convey the public health guidelines and guidance that we’ve been delivering out there about only essential travel.”

The East Wing did not have further information about what the first lady would be doing while in Tokyo, and administration officials said the White House was still in negotiations with the Japanese over how much access she and her delegation would have to the Games.