An tempestuous straphanger struck a woman with his umbrella on a Queens subways platform, cops said Sunday.

The NYPD released a video of the encounter that shows the straphanger calmly walking inside of the Mott Avenue subway station in Far Rockaway around 5:30 p.m. on Nov. 10., cops said.

Surveillance video shows the man run at a group of riders on the platform and swing his umbrella at one of the women, hitting her in the back of the head, the video shows.

Members of the group appear to fend off the attacker before he fled on the northbound A train.

The woman was treated by EMS at the scene for pain to her head and neck.

It was unclear what spurred the attack.