Apple Watch Series 9 sleep tracking inaccurate post-update

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Apple Watch Series 9 sleep tracking inaccurate post-update

Since the latest software update to my watch in mid-December it has not been tracking my sleep correctly. It is showing me as waking up 20+ times a night and sometimes being awake for an hour at a time. I know this to not be true. Prior to installing the latest update around 10/11 Dec I was tracking at a handful of wake-ups a night which was correct.

Hopefully these images help demonstrate the difference.

I have a Series 9 running OS 26.2

Apple Watch Series 9, watchOS 26

Posted on Jan 12, 2026 1:36 AM

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Answer 1

Jan 12, 2026 5:44 AM in response to LESourbutts

I have the similar issue on my Ultra 2 since watchOS 26. It seems, Apple focused in the latest update more on the accelerometer of the watch, to estimate the Awake phases during the Sleep Focus.

Checking the time on my watch in the night, turning around after that and falling asleep right away is counted as being awake for 20-60min.

As a workaround, I delete the Awake duration in the Health App -> Sleep -> Show all Data -> Awake -> All Recored Data -> swipe the wrong data to the left and confirm the changes.

All effected users should all let Apple know about this issue by using the Feedback link, I have already submitted mine.

Feedback - Apple Watch - Apple

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Apple Watch Series 9 sleep tracking inaccurate post-update

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