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How fast is rainfall?

Published in Rainfall Speed 1 min read

Rainfall speed, or the speed at which raindrops fall, varies depending on the size of the raindrops, but generally falls between 15 and 25 miles per hour (mph).

According to the provided reference, raindrops don't continuously accelerate; instead, they reach what's called a "terminal velocity." Here's a breakdown:

  • A smaller raindrop with a radius of 0.15 cm has a terminal velocity of about 7 meters per second, which is equivalent to approximately 16 mph.
  • Larger raindrops fall within a range of 15-25 mph.
  • The height from which the raindrop begins its descent does not impact its terminal velocity.

Therefore, while various factors can slightly influence the exact speed, you can generally expect raindrops to fall at speeds within the specified range.

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