Share prices on the Singapore bourse fell with the benchmark Straits Times Index ending the day lower by 9.51 points or 0.30 per cent to 3,140.93.
An uninspiring lead from Wall Street last Friday and weak manufacturing data from China led the decline on the local bourse.
Other major Asian bourses turned in a mix performance.
Losers led gainers 214 to 177 while 404 counters were unchanged.
Trading volume was thin with 2.02 billion shares worth $983 million done.