On August 16, 2007, the highest temperature was recorded in Tajimi, Gifu prefecture and Kumagaya in Saitama prefecture. The new record is 40.9 degree which renewed the old record in Yamagata, 40.8 degree for the first time in 74 years. Here is an article about the former record in Yamagata.
This intense hear has lasted quite long. It is almost over 30 degree everyday in Kanto, east and south part of Japan. These hot days cause heatstroke everywhere. There are 18 people died because of heatstroke in total in Ibaraki, Chiba, Kanagawa, Mie, Shiga, Ohsaka, Hyogo, Saitama, Gunma, Tokyo, Akita, and Kyoto at the present.
Specially, old people and children tend to get ill with this heat. What is the problem about old people is they don’t use air conditioner. They think it is not healthy to keep turning on air conditioner and it costs money. Some even close the windows suffering thief coming in at night.
Summer in Japan is terrible with humidity. Even if the temperature is really high, you may not feel so uncomfortable without humidity. However, it is disgusting and unpleasant just with it. It is like you are having a sauna all the time.
Take lots of water and eat properly to survive summer in Japan!