iPad Pro temperature alarming

I have been running iPadOS since beta 5 on my 2018 iPad Pro (12.9in).

I have noticed that whenever I watch a video the lower part of the screen in landscape left orientation gets really hot (I would guess at least 35°C on the surface but I could be wrong being too optimistic).


What could this be due to? Is this normal? Would be the not-updated for iPadOS 13 app be the problem?

Is there something I could do to help with this?

Is there a tool to monitor the iPad's temperature?


Thank you