Thailand's business sentiment improved in June as confidence among manufacturing and non-manufacturing sectors increased, data released by the central bank showed Monday.

According to the Bank of Thailand (BOT), the country's business sentiment index (BSI) rose to 51.0 last month from 49.7 in May as most sub-indices increased, led by performance and production.

The manufacturing index rose particularly in the automotive, steel, and petroleum-related industries due to significantly higher confidence in performance and production, the BOT said in a statement.

Respondents in the hotel and restaurant sectors reported increased confidence because of the tourism recovery, whereas respondents in other non-manufacturing sectors reported roughly stable confidence, the statement said.

The reading was based on a survey of 509 respondents from large and medium-sized firms, the central bank said.