Hi Peter,
It's good to hear that you are planning a trip to Ireland in September.
Firstly, there are a number of different ways you could travel from Dublin to Dingle. The only direct way would be to
rent a car. That option would allow you to stop at different places along the way, if you wished to. Other than that, you could take a combination of buses or trains, or you
could even fly most of the way there (as far as Kerry Airport).
For ideas on what to do during those days, this
Trip Ideas page is very handy. One tip would be to explore the
Ring of Kerry. You could also spend the time exploring
Ireland's Ancient East on your way down to Dingle.
If you have any other queries, we're here to help.
Regards,
Eoin