Is it normal to sweat from the front of your knees?
Yep.Totally normal
Yes, your knees can sweat. Sweat glands are found all over your skin, including the fronts of your knees.
It can feel oddly specific, but the skin on your knees has sweat glands like the rest of your body. Heat, exercise, stress, or snug clothing can make the area damp—and sometimes sweat from your thighs just runs down and collects there.