(FILES) Tourists look at the view of the city from the observation deck of the Mahanakhon Skywalk in Bangkok on May 14, 2024.
Gross domestic product expanded 2.5 percent, the Office of the National Economic and Social Development Council (NESDC) said, short of the 2.7 percent forecast as the manufacturing and agriculture sectors contracted.
The figures come after Prime Minister Paetongtarn Shinawatra's government launched measures to boost growth including increasing the minimum wage and a "digital wallet" cash handout.
The slack performance means Thailand has had "one of the weakest recoveries in Asia" from the effects of Covid-19, with GDP just over four percent above its pre-pandemic level, Shivaan Tandon of Capital Economics said in a note.
The final quarter saw a 3.2 year-on-year increase in GDP, below the 3.8 forecast in a Bloomberg News survey.
The crucial tourism provided crucial support, with visitor numbers topping 35 million, beating the government's target.
However, manufacturing shrank 0.5 percent over the year while the agriculture, forestry, and fishing sector contracted 1.0 percent.
The NESDC said growth this year should come in at 2.3-3.3 percent, supported by increased government spending, domestic consumption and tourism recovery.
But it urged the government to step up trade talks with Washington as Trump unveils new tariffs targeting countries that have trade surpluses with the United States.
"Thailand stands out as one of the countries in Asia most exposed to Trump's plans to introduce reciprocal tariffs on its trading partners," Tandon of Capital Economics said.
"So if those tariffs come through, Thailand's goods exports would struggle."
