In the last week, 9.436 people have been hospitalized with heatstroke and 57 have died. Half of those who died were indoors. Outside it is burning hot, inside it is stiflingly humid. It averages 35 in the day and 26 at night. My main room is air-conditioned, and I keep it at a steady 28 with the curtains closed. But my small kitchen has become an oven. I only go in there to get drinks from the fridge. Continually moving from an air-conditioned area into the heat and humidity can bring on heat stress and exhaustion.
One of the best places to be in this weather (apart from a cooler country) is on the water. Here`s a short video from the Tokyo Bay Summer Evening boat, a two-hour booze cruise around Tokyo Bay. That is Rainbow Bridge we go under.