I just bought this car and it's already leaking water into the rear hatch window. I took some pics and wanted to share this with everyone that may have the same issue as mine.
Youtube channel "NAUS" had a leaky hatch. He shows where water was entering under the hinge attachments. I noticed my car looked the same as his (pop-rivet not flush), so I caulked around the hinge brackets with DAP Dynaflex 230 clear.
I live in the desert, so no rain yet to test my fix. Good luck!
I took it to a dealer to see if they'll replace the weatherstripping or the glass itself. The thing is I already tinted it, so I'm going to ask honda to reimburse for the rear hatch window tint. That is if the glass has to be replaced.