Following a Bloomberg article that lists the Georgetown Embassy as the one with the longest wait time for visitor visas, the US Embassy here says that the COVID-19 pandemic seriously affected its visa processing capacity but that last week the wait time for visitor visas decreased significantly as compared to the week before.
The US State Department website travel.state.gov says that for the nonimmigrant visitor visa, the appointment wait time is 401 calendar days as compared to Student and Exchange Visitor Visas being 1 calendar day and all other non-immigrant visas 8 calendar days.
The average global wait time for a visitor’s visa for the United States is 240 days.