Japan's farmers go nocturnal as deadly heat intensifies
Japanese farmers are rewriting the agrarian clock to avoid deadly heatwaves. They work at night and early in the morning to protect crops, livestock, and themselves. The heat has become a new threat to producers, and the government is taking note.
Intelligence analysis by Llama

Japanese farmers are adapting to increasingly intense heatwaves by working at night and early in the morning. This shift is necessary to protect crops, livestock, and themselves from the deadly heat. The government is taking steps to address the issue, including introducing new workplace regulations and promoting smart farming technologies.
Imagine you're a farmer in Japan, and the sun is so hot that it's like a giant oven. You have to work at night and early in the morning to avoid getting hurt. It's like having a special schedule just for the summer. This is what's happening to many farmers in Japan because of the really hot weather.
Analysis
The Toll on Aging Farmers
A record 59 agricultural workers succumbed to extreme heat in 2024 in Japan, more than double the death toll in 2021. About 60% of farmers in their 20s to 50s surveyed by Japan Weather Association last year said they had either personally suffered heatstroke or knew someone who had. Nearly 60% of farmers also shifted their working hours to earlier or later in the day.
The Cost of Heat Exposure
Heat exposure cost Japan's agricultural sector 926 million labor hours in 2024 alone, according to Lancet Countdown, a research collaboration that tracks the health impacts of climate change. This translates to roughly $46 billion in lost income, or about 1% of Japan's gross domestic product. To adapt, workers at Iijima's farm now start work up to two hours earlier.
The Government's Response
The government has taken note of the issue and introduced new workplace regulations in 2025. These regulations require employers to establish heatstroke reporting procedures and emergency response plans. Japan is also promoting smart farming technologies such as the use of drones and robots to reduce workers' heat exposure.
Key points
- Japanese farmers are adapting to increasingly intense heatwaves by working at night and early in the morning.
- The heat has become a new threat to producers, and the government is taking note.
- The government has introduced new workplace regulations and is promoting smart farming technologies to address the issue.
- Heat exposure cost Japan's agricultural sector 926 million labor hours in 2024 alone.
- The government's regulations require employers to establish heatstroke reporting procedures and emergency response plans.
If this development plays out positively, it could lead to the widespread adoption of smart farming technologies, reducing the risk of heat exposure for farmers and improving crop yields. Additionally, the government's new regulations may lead to better working conditions and reduced labor hours lost to heat.
The realistic downside risks or failure modes include the continued loss of labor hours and income due to heat exposure, as well as the potential for more severe heatwaves in the future. Additionally, the adoption of smart farming technologies may be slow, and the government's regulations may not be enough to address the issue.