To access the Body Temperature deviation graph, tap the temperature reading in the readiness view, or go to the Trends view through the app's main menu.

How does Oura measure my body temperature?

The Oura ring measures your skin's temperature, not your inner body temperature. Temperature variations are measured each night while you sleep. These variations are shown in relation to your baseline average, which is determined during the first weeks of use. 

Once your baseline has been established, it's kept up to date continuously. If you're down with the flu during the first weeks of use, no need to worry, your baseline will adjust to your normal body temperature over time.

How to Interpret the Body Temperature Graph

Oura measures your body temperature to analyze your recovery status. If your body temperature is clearly out of your normal range due to e.g. a fever, you'll see a lowered readiness score. 

The Body Temperature deviation graph has two different views. The Daily view focuses on short-term temperature changes. If your body temperature is elevated, you'll see the change in the graph in relation to your baseline (0.0).

Note for Android users: The Daily view corresponds to the 30 Days view in the Android app.

The Trend view is optimized to reveal monthly body temperature fluctuations. People who menstruate typically see lower body temperature readings during the first half of their menstrual cycle (follicular phase), followed by a rise during the second half (luteal phase). 

Read more in the Oura blog: 

• What Can You Learn From Your Body Temperature Trends?
• Understand and Track Your Menstrual Cycle Phases