Output falls for second month due to war and quake

By the Editorial Team · Thursday, October 1, 2026

Japan's industrial production fell 1.7 percent in August due to supply chain disruptions from a recent earthquake and rising costs linked to Middle East tensions, missing economist expectations for growth. Despite these setbacks, the government anticipates a production rebound in the coming months supported by a weaker yen and strong demand for AI-related technology, though uncertainty around AI risks and geopolitical issues may affect future investment.

Japan's industrial production declined for the second consecutive month in August, affected by disruptions from a recent earthquake and ongoing challenges linked to rising costs related to the conflict in the Middle East. According to data released Wednesday by the Ministry of Economy, Trade and Industry, output fell 1.7 percent compared to July, defying economists’ expectations of a 1.3 percent increase. On a year-on-year basis, production rose 3.4 percent, lagging behind the consensus estimate of a 6.8 percent gain.

The decline was pronounced in sectors including automobile manufacturing, general-purpose machinery, industrial machinery, and petroleum products. Conversely, production of transport equipment excluding cars — such as aircraft engine parts — recorded growth during the same period.

Analysts noted the lingering effects of a magnitude 7.1 earthquake that struck Kumamoto on July 28 as a significant factor in the output drop. The seismic activity, which continued for days after the initial event, disrupted supply chains extending to Aichi Prefecture, a key industrial hub and home to Toyota. Takeshi Minami, chief economist at the Norinchukin Research Institute, indicated the decrease was partly due to these temporary disruptions and did not signal a broader industrial downturn.

Amid ongoing tensions in the Middle East, particularly concerning Iran, elevated oil prices and supply chain uncertainties have further constrained industrial activity. The closure of the Strait of Hormuz has contributed to these pressures. Sources familiar with Iranian officials reported skepticism about reaching an agreement to end hostilities and reopen the shipping lane before the U.S. midterm elections in November.

While industrial output faced challenges, retail sales showed resilience, increasing 2.7 percent in August from the previous year. Wholesale trade also expanded in categories such as machinery, textiles, and chemicals, although sales of clothing and accessories declined.

Looking ahead, the government projects industrial production to rebound with increases of 3.2 percent in September and 3.1 percent in October. Factors supporting this outlook include a relatively weak yen, which benefits exporters, and strong global demand for artificial intelligence (AI)-related products, boosting Japan’s technology sector. The country’s manufacturing Purchasing Managers’ Index (PMI) remained in expansionary territory at 54.1 in September, consistent with positive readings throughout 2026.

However, uncertainty persists around the sustainability of AI-driven growth. Recent developments—including a significant cyberattack involving an OpenAI model and calls from industry leaders like Anthropic CEO Dario Amodei to slow advanced AI development—have raised concerns about potential risks.

The Bank of Japan has maintained an optimistic stance, noting moderate increases in exports and industrial production bolstered by AI demand. Its upcoming tankan survey is expected to reflect sustained corporate confidence and a modest rise in planned capital investments. Minami emphasized that while AI-related productivity gains could support continued demand, the evolving risk environment complicates business investment decisions moving forward.

This article was reported by synthesizing coverage from multiple independent news outlets to present a balanced, unbiased account. Read about our editorial standards. Spotted an error? Let us know.