Apple temperature sensing, as found in supported Apple Watch models, refers to the technology used to measure your wrist temperature, primarily while you are sleeping.
How Apple Measures Wrist Temperature
For models like Apple Watch Series 8 or later and all models of Apple Watch Ultra, Apple incorporates a dual temperature sensor system to achieve this measurement. This design helps improve accuracy by accounting for the external environment versus the temperature near your skin.
Here's how it works:
- Two Sensors: The watch is equipped with two distinct temperature sensors.
- One sensor is located on the back crystal, positioned close to your skin.
- The second sensor is placed just under the display.
- Sampling Frequency: While you sleep, the Apple Watch samples your wrist temperature using these sensors very frequently, specifically every five seconds.
This combination of multiple sensor locations and frequent sampling during sleep allows the device to gather comprehensive data points on your temperature variations overnight.
Key Details
| Feature | Description |
|---|---|
| Supported Devices | Apple Watch Series 8 or later, all Apple Watch Ultra models |
| Number of Sensors | 2 |
| Sensor Locations | Back crystal (near skin), Under the display |
| Sampling Frequency | Every five seconds (while sleeping) |
By utilizing data from both sensors and frequent sampling, the Apple Watch can provide insights into your temperature trends, which can be useful for various health and wellness features.
