watchOS 27

Where watchOS 27 Stands Today

The current version is watchOS 27.2, released October 26, 2026 as build 24S118. 3 watchOS 27 releases have shipped since September 14, 2026.

Every watchOS 27 Release

Each version, its build number, the day it shipped and the gap before it. Taken from Apple's release feed within minutes of each one and kept permanently — the gaps are measured, not estimated.

Which Devices Run watchOS 27

6 models run watchOS 27, and 5 that ran the previous version did not make the cut. Every point release under watchOS 27 reaches the same list — Apple does not drop devices mid-cycle.

The full list across every platform, or check one device.

• Apple Watch Series 11
• Apple Watch Series 10
• Apple Watch Series 9
• Apple Watch Ultra 3
• Apple Watch Ultra 2
• Apple Watch SE 3

Stopped at the previous version: Apple Watch Series 8, Apple Watch Series 7, Apple Watch Series 6, Apple Watch Ultra, Apple Watch SE 2.

The watchOS 27 Beta Cycle

12 pre-release builds of watchOS 27 are on record, each with its own page and Apple's notes for it where they were published. The build history lays out every platform side by side.

watchOS 27 betas are still arriving for the next point release — the install guide covers joining, and leaving is as simple.

How to Install watchOS 27

Open the Watch app on your iPhone → General → Software Update → Beta Updates. A shipped release needs nothing beyond that — no file, no profile, no account beyond the one already on the device.

Coming from an older version, the device installs the newest watchOS 27 release directly; there is no need to step through the ones in between. If nothing appears, this guide covers the three usual causes.

Frequently Asked Questions