The temperature near Tokyo went over 40ºC for the first time in June. People are using air conditioners more. It is difficult for power companies to produce electricity. Japan has asked people to use less electricity, especially in the evening. It wants people to turn off lights from 3 pm to 6 pm.

The heat will continue. The rainy season was the shortest since records began. This means the summer will be long and hot. The government said: "Please cooperate and save as much power as possible." There could be power shortages. There is also a risk of heatstroke. The government asked people to drink lots of water.