Wrist-Based Temperature refers to the temperature measured at your wrist, typically during sleep, providing valuable insights into your body’s recovery, stress levels, and potential signs of illness.
Typically 0.5°C to 1.5°C (0.9°F to 2.7°F) lower than core body temperature and is measured during sleep for consistency. Monitoring wrist temperature trends can help detect subtle changes in your body related to recovery, illness, or stress. A consistent rise or fall from your baseline temperature can indicate that your body is fighting off illness or needs more recovery after intense training sessions.
Ranges
- Low Temperature (Below 34.0°C / 93.2°F): May indicate hypothermia or reduced blood flow to the extremities. Persistent low temperatures should be monitored closely.
- Normal Temperature (34.0°C - 36.5°C / 93.2°F - 97.7°F): Normal range for wrist temperature under typical conditions, reflecting balanced recovery and health.
- Elevated Temperature (Above 36.5°C / 97.7°F): May signal fever, stress, or inflammation. A rise from baseline could indicate poor recovery or the onset of illness.
Alert Tip: If you don’t see the metric in the Vitals card, your Apple Watch may not support Wrist-Based Temperature tracking. This feature requires an Apple Watch Series 8 or later. Ensure your device is compatible to access this metric.
Related content: For more detailed information on Wrist-Based Temperature, refer to the Guide: Understanding Wrist-Based Temperature – Vitals.