Symptoms
- Watch feels noticeably hot on the wrist
- Warning message about temperature appears on screen
- Watch becomes hot during charging specifically
- Performance slows down when the watch feels warm
Likely causes
- CommonCharging generates some heat, especially with fast chargingThis is normal and should stay mild and short-lived.
- CommonDirect sunlight or a hot car raising the device's temperatureExternal heat sources can make the watch feel hot even with normal internal function.
- PossibleHeavy processing load, like continuous GPS and always-on display togetherCombining power-intensive features generates more heat than typical use.
- Less commonBattery or charging circuit issueA battery fault can cause abnormal heat generation even at rest.
What to do
- Remove the watch from direct sunlight or a hot environment and let it cool in a shaded, room-temperature spot.
- If it's hot while charging, unplug it and check that you're using the manufacturer's recommended charger.
- Reduce simultaneous power-intensive features like GPS, always-on display, and cellular during heavy use.
- Restart the watch once it has cooled down.
- Monitor whether heat returns during normal, non-charging, non-sunlight use, which would be unusual.
- Stop using and charging the watch if it becomes hot enough to be uncomfortable to touch.
When to call a pro
If the watch is hot to the touch during normal use with no sunlight or charging involved, contact the manufacturer's support, since this can indicate a battery fault.
Safety
Use caution
If the watch becomes too hot to comfortably touch, or shows swelling, stop charging and wearing it immediately and let it cool in a safe, non-flammable area.