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The Cockney Rebel

macrumors 68040
Original poster
Jul 17, 2010
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I’m sat on my neighbour’s balcony, and the sun is making my watch quite hot.

Can it do any damage?

Wishing you all well.
 
Our summers here reach 115-120°+ F (46°-48°+ C), and we're over 100°F (38°C) almost every day from June through September. I've worn both my AWU2 and AW8 in those temperatures and they've worked fine - even when my phone has shut down from being overheated.
 
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High temperatures can permanently degrade the battery health of lithium ion batteries. While I wouldn't worry about the situation Cockney Rebel asked about, I also wouldn't intentionally leave my Apple Watch baking in a parked car on a scorching hot summer day.
 
In addition to what others have written, note that the temperature limits are for the device, not for ambient air temperature. Your wrist acts as an heat sink, so the watch is never going to get significantly hotter than skin temperature. The limit temperatures would require something like an hair dryer blasting full at the watch on your wrist for an extended period of time, and that sort of thing would burn your skin before the watch got damaged.

Leaving it on the dash of your car in the Sun on an hot day … that would be bad for the watch. But resting your arm on the window while wearing the watch? Just fine.

b&
 
Our summers here reach 115-120°+ F (46°-48°+ C), and we're over 100°F (38°C) almost every day from June through September. I've worn both my AWU2 and AW8 in those temperatures and they've worked fine - even when my phone has shut down from being overheated.

Similar-ish here. We get probably -25 to +35 and I've had my phone shut off for both heat and cold, but SE/S8/Ultra have never exhibited problems.
 
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