Can You Delete Messages On Iwatch. But if you've let the notifications pile up, don't worry about going through and dismissing them one by one; This will have no affect on your iwatch or your mac.
To delete a message, simply open the messages app on the smartwatch, perform a force touch on the message to be deleted and then select the delete option from the menu. This will have no affect on your iwatch or your mac. You can use commands to clear out bulk messages at one go.
How to Delete Messages on Apple Watch
You have to go to the message app on the watch. With this latest update, you'll now have the option to delete a message either just for yourself or for you and the person it was sent to. These text messages were deleted on an iphone, but remain on the apple. Press the digital crown on your apple watch to get into the app screen, scroll down look for the messages app.