Singapore's stock market rebounded in Monday morning trading, along with other bourses in the region, after jittery investors were calmed by United States President Barack Obama's decision to seek Congressional approval before carrying out a strike on Syria.

The Straits Times Index rose 19 points or 0.63 per cent to 3,047.9 by 12.45pm.

A total of 1.8 billion shares, worth $433 million, changed hands. Shares that rose outnumbered those that fell 189 to 128, with 483 others unchanged.

Top gainers included Singapore lenders UOB and DBS. UOB was ahead 40 cents to $20.29, while DBS rose 31 cents to $16.11.

Bloomberg reported that Singapore stocks fell by the most among developed markets last month, hurt by souring sentiment on Southeast Asia.