Thailand's private investment indicators jumped 21.6% in September from the previous month, the Bank of Thailand said on Oct. 30, as companies imported computer and data processing equipment for artificial intelligence data centers. The same report showed foreign tourist arrivals falling 6.3% and private consumption dropping 2.2% from August, all on a seasonally adjusted basis, leaving the economy increasingly reliant on a single engine.

For investors in Asia, the split matters. Thailand's growth is now tied closely to the global electronics and AI cycle, while the tourism and household spending that once carried the economy are fading. The central bank listed the durability of that technology cycle first among the risks it is watching.

Bank of Thailand data show exports and data centers carrying growth

Merchandise exports excluding gold rose 3.7% from August on a seasonally adjusted basis, according to the Bank of Thailand. Telecommunications equipment and computers shipped to the U.S. led the gain. Gems and jewelry exports also rose, which the bank attributed to temporary shipments for trade exhibitions in Hong Kong, and car exports to Australia and Japan increased.

Not every category grew. Exports of electrical transformers to the U.S. fell, as did durian shipments to China and diesel sales to Malaysia and Vietnam, the bank said.

Imports excluding gold climbed 13.6% from the previous month, faster than exports. Much of that was electronic components from Taiwan and computers and machinery from China. The surge in imports narrowed the trade surplus, and the current account swung back to a deficit of $1.6 billion, which the bank said also reflected larger repatriation of profits and dividends and higher freight costs.

The investment jump came mainly from machinery and equipment, with the central bank pointing to imports of automatic data processing machines tied to AI and data center projects. It cautioned that part of the increase reflected the delivery schedules of some businesses. Construction investment declined on weaker homebuilding, particularly detached houses and townhouses. Manufacturing output rose on higher electronics production, while automotive and steel output fell.

For the third quarter as a whole, the bank said the economy improved from the second quarter, with exports, machinery investment and private consumption all contributing. Government measures partly supported spending, it said.

Tourism and consumer spending soften

The weak spots were in services. Foreign arrivals fell in September as visitors from several short-haul markets dropped off, the bank said, citing flight constraints and higher travel costs as oil prices rose. Malaysian arrivals declined because of safety concerns after unrest along Thailand's southern border, and Chinese and long-haul visitors fell after the summer holidays ended.

Tourism receipts still rose from August, because longer-staying, long-haul visitors made up a larger share of arrivals and spent more per trip.

The broader trend is soft. Data from the Ministry of Tourism and Sports, reported by The Nation, showed 23.2 million foreign arrivals from January through September, down 3.8% from a year earlier, with foreign tourism revenue down 2.26% to 1.142 trillion baht. Malaysian arrivals were down 15.19% over that period and South Korean arrivals down 25.43%, while visitors from China rose 15.16%.

Tourism Authority of Thailand Governor Thapanee Kiatphaibool told The Nation the agency would try to keep 2026 arrivals near 33 million, or at least match the 32.97 million recorded in 2025. Hitting 33 million would require about 9.8 million arrivals in the final quarter. She said short-haul markets look difficult for the rest of the year because of currency swings and a stronger baht.

At home, households pulled back. The bank said spending on hotels and restaurants fell, car and pickup sales declined, and fuel purchases dropped as pump prices rose. Consumer confidence weakened on concerns about flooding late in the month, high living costs and household debt. Government spending also contracted from a year earlier, as both central government and state enterprise disbursements fell.

Inflation rises on oil, and the baht weakens

Headline inflation rose to 2.82% in September from a year earlier, driven by higher retail fuel prices that followed global crude after renewed tensions in the Middle East, the bank said. Core inflation held at 1.50%.

The baht weakened against the dollar on average in September and October, with the October average at 33.64 per dollar through Oct. 26, according to the report. The bank attributed the move mainly to expectations that the U.S. Federal Reserve would adopt a more restrictive stance amid persistently elevated inflation and to higher oil prices, given Thailand's heavy reliance on imported energy. Thai government bond yields fell over the same period, which the bank linked to safe-haven demand and a September inflation reading below market expectations.

The labor market was broadly stable, but the bank flagged a rise in unemployment benefit claims as something to watch.

The monthly figures came two days after the central bank held its policy rate at 1% and raised its export forecast. Besides the technology cycle, the bank said it is tracking geopolitical conflicts, trade protectionism, the tourism recovery and the effects of flooding and El Niño.