A WA motorcyclist has died overnight in Katanning.

The incident occurred on Great Southern Highway near the intersection of Greenhill Road North at around 7pm last night.

WA Police said a red and black Harley-Davidson motorcycle and a while Toyota Corolla hatchback collided.

The motorbike rider, a 42-year-old man, died at the scene.

The driver of the vehicle, a 62-year-old man, was injured and taken to Katanning Hospital.