Foreigners pulled $19.6 billion (700 billion baht) out of Thailand in the first 11 months of 2016 but the trend is unlikely to affect economic stability, according to the Bank of Thailand.
The 11-month figure exceeded that for all of 2015, at $17.1 billion (616 billion baht), the central bank said.
The rate quickened in October and November, when foreigners moved 3.1 billion baht and 4.1 billion baht respectively.
The outflows were attributed to the net selling position of foreigners in the local stock and debt markets in line with the regional trend after the US Federal Reserve started raising its policy interest rate.
Commercial banks and local foreign investment funds (FIFs) also added to the outflows.
Despite the continued selloffs, foreign direct investment (FDI) continued to come in high numbers, the central bank said.
During the same period, FDI totalled $3 billion. In November alone, the direct inflows totalled $2 billion due to increased investments in Thai telecommunication businesses.
Jaturong Jantarangs, assistant governor for monetary policy, foresaw more outflows as the Fed increases rates further this year.
"The baht liquidity won't be affected in any case while the dollar liquidity would not dent financial stability since Thailand fares better than its neighbours, which are more vulnerable [to outflows] due to their large current account deficits.
"The situation is not alarming thanks to our robust $172-billion foreign exchange reserves and current account surplus, expected to grow to $27 billion," Mr Jaturong said.