https://ourworldindata.org/data-insights/japans-cherry-trees...

Looks like the 20 year average is around 2 April.

> Given the body's vital requirement to maintain a core temperature of approximately 37 °C (99 °F), a sustained wet-bulb temperature exceeding 35 °C (95 °F) — equivalent to a heat index of 71 °C (160 °F) — is likely to be fatal even to fit and healthy people, semi-nude in the shade and next to a fan; at this temperature human bodies switch from shedding heat to the environment, to gaining heat from it.

in those conditions, your body can no longer cool itself down by sweating and having the sweat evaporate. simply being outside, or inside without air-conditioning, will result in potentially fatal hyperthermia.

but I'm sorry to hear that there's motorcycles driving past your house.

0: https://en.wikipedia.org/wiki/Wet-bulb_temperature#Wet-bulb_...

And they really look like idiots when for example I easily pass them on my road bike in the Shonan area on road 134 because the roads are too narrow there to pass any cars even on a motorbike (mostly just the roadbikes are able to pass there), and they are just inching forward in the traffic with 2 km/h while revving their engines. Absolute losers.

And the longer summer definitely encourages these idiots to be a nuisance longer