Going by that pic of the boot drain, the end grommet has perished. You should have a rubber grommet on the outside of the hole.
OP's car isn't supposed to have a drain tube. It's an early 2013 model.Best to check and make sure you can see the tube end when looking into the drain hole. The part looks like this, and the issue tends to pop up when some part of the end seal rots away and allows the tube to drain into the hatch rather than out the hole:
View attachment 204732