Several cars in the neighbouring car park werealso damaged after the canopy landed on them.
Iarnród Éireann have since closed the station and said: "Emergency services are at the scene, and it is understood that one customer has been injured, although thankfully the injuries are not life threatening.
"While there were high winds and rain in the area at the time, the cause of the incident is not known at this time, and will be the subject of a full investigation."
It is not expected that services will resume this evening, and it is not yet certain whether the station will re-open and services will resume tomorrow, as examinations of the roof structure will take place.
Despite high winds and bad weather, the specific cause of the roof collapse is not yet known and a full investigation will be carried out.