Is it normal to sweat behind your ears?
Yep.Totally normal
Yes, sweating behind your ears is normal. Sweat from your scalp or nearby skin can collect there, especially when you’re hot, exercising, or wearing something that traps heat.
Your ears aren’t exempt from sweat, and sweat from your hairline can run behind them too. It may be more noticeable with long hair, hats, glasses, or warm weather.
A quick wash and dry is usually all you need. If the area also becomes persistently sore, itchy, or rashy, it’s worth getting checked.