this post was submitted on 30 Jul 2025
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Japan recorded the highest ever temperature of 41.2 degrees Celsius on Wednesday, beating the previous high of 41.1 C marked in 2018 and 2020. Authorities are strongly urging people to take precautions to avoid risks of heatstroke.

The mercury hit the above-human temperature of 41.2 C in the city of Tanba, Hyogo Prefecture, at 14:39, while two cities — Fukuchiyama in Kyoto and Nishiwaki in Hyogo — also recorded extremely high temperatures of 40.6 C and 40 C, respectively.

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[–] wazzupdog@lemmy.blahaj.zone 10 points 3 days ago (3 children)

Hottest temp I've ever been in was over 50. it was painful just walking outside.

[–] punkwalrus@lemmy.world 7 points 3 days ago (2 children)

I have endured a Phoenix, Arizona heat at just under 120° F and opening my motel door was like opening an oven to check on something you're baking. Our rental car had to have the AC on for about 3 minutes before sitting in the seats wasn't searingly painful. It took about 5 minute for the steering wheel to be comfortable enough to grip for more than a few seconds.

[–] Flocklesscrow@lemmy.zip 9 points 3 days ago

The city of Phoenix shouldn't exist. It's a monument to American hubris.

[–] Joeffect@lemmy.world 8 points 3 days ago (2 children)

But it's fine... it's a different kind of heat....

[–] cannedtuna@lemmy.world 8 points 3 days ago (1 children)
[–] SheeEttin@lemmy.zip 2 points 3 days ago (1 children)

Ackshually, combustion releases water vapor. If you have a gas stove, you might have noticed condensation on the side of a pot of water when starting from cold. That's why.

[–] deegeese@sopuli.xyz 2 points 3 days ago

Ackshually hot air has a higher vapor capacity, therefore the fire is a dry heat, and only away from the fire does it become moist.

[–] shalafi@lemmy.world 3 points 3 days ago (1 children)

Meh, that's pretty fucked if it's humid. I'd do 50C in Death Valley before 40C in Florida.

Think the hottest I remember is 48C in Oklahoma. LOL, I was mowing lawns for a living and mom was calling to scream I should come home. At the time, I was young and used to it.

Speaking of humid. Put in a little 14' above-ground pool. Jumped in the other day to cool off while working in the yard. For the first time I emotionally understood wet bulb temps. Soaking wet did nothing. Was fucking around at camp today, shirt instantly soaked, no wind, and no amount of water was cooling me. Scary stuff.

[–] Toneswirly@lemmy.world 1 points 2 days ago

Ambient humidity prevents evaporation which is how sweat and water cool you off. Thats why humidity feels like extra death.

[–] Baggie@lemmy.zip 1 points 3 days ago

Same, I went for a walk just to feel it. It was for about 5 minutes, I was fine, but it was definitely something that could kill you if you were in it for too long.