My Apple Watch 8 is not recording my temperature, why not?

Hello SJD1612,

Welcome to the Apple Support Communities!

We can understand wanting to look into why your Apple Watch series 8 is not recording your body temperature. We have some information we believe will help.

First, check out this link to learn more about how to Track your nightly wrist temperature with Apple Watch Series 8 - Apple Support. Make sure that wrist temperature tracking is enabled correctly.

Set up wrist temperature tracking

1. Set up Sleep with Track Sleep with Apple Watch turned on.

2. To establish a temperature baseline, ensure the Sleep Focus is on, then wear your Apple Watch while sleeping.

Wrist temperature data will be available after about five nights.

Note: Your body temperature naturally fluctuates, and can vary from night to night due to a number of variables. Wrist temperature can also be impacted by external factors like your sleep environment.

For more detailed information about how your wrist temperature is measured, tracked, and how to view, you can look here: Track your nightly wrist temperature changes with Apple Watch - Apple Support.

We hope this information helps you out.

Kind regards!

Remember this feature is not recording your body core temperature and is not suitable for detecting fevers.