Heat helps evaporate the moisture.
If physical movement doesn't work, thermal or chemical aids can help dry the remaining moisture. Preventing Swimmer's Ear | Healthy Swimming - CDC remove water from ear after swimming
Your ear canal isn’t a straight, smooth tunnel. It has natural curves and is lined with wax-producing glands. Water often gets trapped due to: Heat helps evaporate the moisture
Here is a comprehensive guide on how to safely remove the water, what to do, and when to see a doctor. what to do
Lie on your side for several minutes with your ear resting on a clean, absorbent towel.