Track your nightly wrist temperature changes with Apple Watch
About Wrist Temperature Your wrist temperature is a measurement related to your body's temperature taken by your Apple Watch while you're asleep. Your body temperature naturally fluctuates and can vary each night due to your diet and exercise, alcohol consumption, sleep environment, or physiological factors such as menstrual cycles and illness. After about 5 nights, your Apple Watch will determine your baseline wrist temperature and look for nightly changes to it. If you use Cycle Tracking, your wrist temperature can also be used to provide retrospective ovulation estimates and improve period predictions. Here's what you need An Apple Watch Series 8 or Apple Watch Ultra. Sleep must be set up with Track Sleep with Apple Watch enabled. Sleep Focus must be enabled for at least 4 hours a night for about 5 nights.
Your wrist temperature is a measurement related to your body's temperature taken by your Apple Watch while you're asleep. Your body temperature naturally fluctuates and can vary each night due to your diet and exercise, alcohol consumption, sleep environment, or physiological factors such as menstrual cycles and illness. After about 5 nights, your Apple Watch will determine your baseline wrist temperature and look for nightly changes to it. If you use Cycle Tracking, your wrist temperature can also be used to provide retrospective ovulation estimates and improve period predictions.
