Can Apple Watch s8 take your temperature at any time?

Yes

Although Apple Watch S8 has many health functions, such as temperature detection, blood oxygen detection and so on. As a smart watch, Apple S8 not only provides basic time display and notification functions, but also has a very practical temperature detection function. By monitoring the user's body temperature in real time, it can provide users with a more comprehensive health management experience. After entering the "Body Temperature" page, you can see a electronic thermometer. You can start measuring your temperature by clicking the round button at the bottom of the screen.