Key Facts
• Tokyo experienced 8 consecutive days of extreme heat, the longest in August.
• Household spending in Tokyo increased by an average of $24 (¥3,512) per month.
• Food and beverages, including ice cream and soda, saw the highest spending growth.
• On August 25, 142 locations in Japan recorded temperatures above 35°C.
• Shiga Prefecture’s Higashiomi City recorded the highest temperature at 37.9°C.
• Extreme heat disrupted grape ripening in Chiba Prefecture, affecting harvest quality.
• Night temperatures above 23°C hindered the coloration of Kyoho grapes.
• Losses from unripe grapes could reach hundreds of thousands of dollars.
• Rising sea temperatures in Mie Prefecture led to coral expansion and tropical fish migration.
• High-value fish like “Goatfish” and “Gurukun” were found in traditionally cooler waters.
• Warm currents and “Kuroshio Large Meander” contributed to sea temperature rise.
• Seaweed-eating sea urchins increased, reducing seaweed and impacting lobster populations.
• Mie’s lobster catch dropped from 40 tons (7 years ago) to 2 tons last year.
• Fishermen reported financial losses and declining interest among younger generations.
Summary
Tokyo’s record-breaking 8-day heatwave in August has significantly impacted household budgets, with average monthly spending rising by $24 due to increased purchases of cooling products like ice cream and beverages. The heat has also disrupted agriculture, particularly in Chiba Prefecture, where high night temperatures have hindered grape ripening, potentially causing substantial financial losses. Additionally, rising sea temperatures in Mie Prefecture have altered marine ecosystems, leading to coral expansion, tropical fish migration, and a sharp decline in lobster populations. Experts attribute these changes to global warming and the “Kuroshio Large Meander.” The combined effects of extreme heat and environmental shifts are causing economic and ecological challenges across Japan.
