My gpu has 82C while playing fortnite.

[raresmihaila4]

Is it safe?

 

[Ztdutxjgxgtu]

Yrs, temps are safe.
Also look at clock speed, if it lower than usual, meaning cooling not enough,
Then clean it

 

[iamacow]

Hard to say without knowing what card you have, but generally 82C is normal operations for reference cooler (blower style) NVIDIA cards at least.