When you install the new firmware update — version R9x5FXXU1AWDA — you will see that the Samsung Health app on your watch will have a new feature called “predict period with skin temp.” The new functionality will be located in the Cycle Tracking category.
And yeah, sadly, just like with the Apple Watch Series 8, the temperature sensor on the Galaxy Watch 5 and Watch 5 Pro is only limited to tracking menstrual cycles. So, at least at the moment, you don’t get anything by having an active temperature sensor on your wrist if you are male. Now, we must also note that the changelog mentions that the update improves system stability and reliability, so we guess you are getting something out of it after all.
To install the firmware update on your Galaxy Watch 5 and Watch 5 Pro, go to the Settings app on your smartwatch, choose “Software update,” and tap “Download and install.”