I wouldn't put a dash camera there if it's on a shaded area of the windscreen. I often adhere my dash cam in the top left corner of my windscreen and tend to suggest that as it's not going to obstruct your vision or distract you, and it'll get a high vantage point of the road. You can see below (I've added a link) where you should put your camera and why, but if you can't then the top left, as I say, should be fine. Just make sure you look at the footage so you can ensure it's pointed correctly at the road.

Dash camera positioning advice: www.nextbase.com/en-gb/hub/where-to-mount-my-dash-.../