Is it normal to sweat from your knees?
Yep.Totally normal
Yes, your knees can sweat. The skin there has sweat glands, though you may notice it more during heat or exercise.
Your knees can sweat just like the rest of your skin. It may be more noticeable if you’re hot, exercising, wearing tight clothes, or have your knees pressed together for a while.
If you mean fluid coming from a cut or a swollen knee rather than sweat on the skin, that’s different and is worth getting checked.