Consumer confidence declined for a second straight month in June, to a 5-month low, on worries about the country's economic recovery, global uncertainty and low commodity prices, the University of the Thai Chamber of Commerce reported on Thursday.
The index was down to 74.9 in June from 76.0 in May, when it dropped for the first time in six months.
However, consumer spending may pick up in the second half of the year if the government speeds up budget expenditure, the university said.
The Overall Consumer Confidence Index reflects views on the economy, job opportunities and future income. The UTTC survey is usually done in the last week of the month.
The Bank of Thailand on Wednesday raised its 2017 economic growth forecast slightly to 3.5% from 3.4% in March. Last year's growth was 3.2%.