On Sunday the Netherlands had an average precipitation shortage of 155 mm, placing 2018 officially in the 5 percent driest years since the beginning of rainfall measurements in 1906. That means that since 1906, only 5 percent of years were as dry in the Netherlands as it currently is, Weeronline reports.
The precipitation deficit is the difference between the amount of rainfall and evaporation. If more water evaporates than rain falls from the air, there is a precipitation deficit. If it is the other way around, there is a precipitation surplus.