TAIPEI—Taiwan's export orders climbed in August, as Apple Inc. and other companies stocked up electronic components ahead of product releases, but economists expect that momentum to taper off later this year.

Overseas buyers placed $38.21 billion of orders with Taiwanese manufacturers last month, up 5.2% from a year earlier, the Ministry of Economic Affairs said Monday. It was the same pace as in July, but fell short of the 7.45% rise forecast by economists.

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