Average precipitation is around 44 inches annually.
Seattle receives an average annual precipitation of around 38 inches.
Oahu is highly variable as far as rainfall goes. Its northwestern end is often dry and has an average annual rainfall of about 20 inches, while the wetter central to eastern area has average yearly rainfalls up to 154 inches.
Hawaii.
The average yearly precipitation will depend on location. This includes the amount of rainfall in inches throughout the United States. Drier states and regions will have less precipitation than coastal areas.
With an average of over 472 inches or 39 feet (12 meters) of precipitation each year, Mt. Waialeale on Hawaii's Kauai Island is the rainiest and wettest spot on the planet.
africa
Every desert has different climate statistics but, in general, a desert receives from 0 to 10 inches (250 mm) of precipitation on average per year.
I think the total amount for precipitation is 382,000km
The average amount of precipitation on Earth is estimated to be around 990 millimeters (39 inches) per year. However, this value can vary greatly depending on location, with some areas receiving much more precipitation than others.
That's what we humans call the "Water Cycle"
A desert is determined by the average amount of annual precipitation. A desert is defined as a region that receives less than 10 inches (250 mm) of rainfall per year on average.