I have had my Apple Watch 8 for 10 months now and wear it day and night, except when charging before bed, then I put it back on and sleep with it. The temperature part has never worked for me. I have checked everything and am not sure why it doesn’t work.
If you suspect the temperature sensor does not work correctly the best plan is probably to get your watch checked by Apple. Contact Apple Support to start arranging this, either as a Genius Bar appointment, or they might be able to try online remote diagnostics. If your watch is 10 months old you have 2 months of standard warranty left to make any claims!
Watch 8 temperature feature doesn’t work
