Only 3.2mm of rain fell at Gogarbank and 4mm in the Botanic Gardens - 7% and 10% of the respective monthly average.
According to data from the Met Office Midlothian, Fife and Middlesex, were the driest historical counties this month with just 12% of the rainfall expected in April.
Sutherland was the wettest part of Scotland with 36% above average.
The UK as a whole experienced just 47% of the expected rainfall.
Scotland was the wettest area of the UK with 65mm and southern England the driest area with 16mm.
Edinburgh was the driest place in the UK in April despite Scotland as a whole being the wettest.