The Phuket boat tragedy had a significant impact on Chinese tourist arrivals in Thailand last month.
The deadly accident on July 5 claimed the lives of 47 Chinese holidaymakers after the Phoenix boat they were on capsized in bad weather off the resort island.
While the number of visitors to Thailand in the month was almost unchanged from the same period of 2017, June had seen a 20% rise year on year, according to official Chinese figures.
Online travel agency Lvmama said on Wednesday it had witnessed a lull in bookings.
"Many tourists are taking a wait-and-see approach," said Li Xiaolian, deputy director of the company's brand development department. "It's also still the rainy season, so the weather is uncertain."
Thailand welcomed about 10 million holidaymakers from mainland China in 2017, or almost a third of all foreign visitors to the country. But after the events of July 5, the Tourism and Sports Ministry said it had revised down its forecast for the number of Chinese arrivals for the July-December period by nearly 670,000, to 5.1 million.
Cisily Chen, a Beijing-based investment director, said she saw very few Chinese tourists on a recent trip to Phuket with her husband and young son.
"We stayed at the Hilton, which according to the reviews is usually full of Chinese guests, but during our stay there were more people from South Korea and other countries," she said.
"I felt that we were the only Chinese family during our trip to Phi Phi island and at other activities like watching the boxing show," she said.
Despite the absence of her countrymen, Chen said that she received a warm welcome at Phuket airport, and the whole immigration process took no more than three minutes.
"There was even an official who spoke Chinese helping me fill in the application forms for the visa … they were very nice," she said.
Tourism operators in Thailand have urged the government to waive visa fees for Chinese tourists in a bid to draw them back.