Macbook pro heated

[aarexer]

Hello everyone!
I have a question about temperature on my mac book pro.
My mac:
MacBook Pro (Retina, 13-inch, Early 2015).
cpu: 2,7 GHz Intel Core i5
OS: macOS Sierra 10.12.2
Video card: Intel Iris Graphics 6100 1536 МБ

And when i connect second monitor by hdmi - my mac's temperature sharply increased.
I don't know why, i don't start any programs, but have high temperature, about 80-90 degrees.
What's wrong?

Fans spinning, use my mac less than half an year.

Is it good? Or what should i do?

Thanx a lot!

 

[Toutou]

A small temp increase is okay after connecting an external monitor, but not that much. On my Late 2013 13" it's about +5°C.

 

[aarexer]

Thanx for your reply!
And what i should do?

Without external monitor i have 60 degrees