The intense bad weather system "Hephaistion" that hit the country from Sunday 5/1/2020 - Tuesday 7/1/2020 gave particularly high precipitation (rainfall / snowfall) with the strongest occurrences being found in Evia, Crete, the Cyclades and Attica.
The map above shows the 7 largest cumulative heights of precipitation until 17:00 on Tuesday afternoon 7/1 according to the Athens National Observatory 's network of meteorological stations / meteo.gr.
In Sfakia, Askifou got 236 mm, after already receiving 423 mm of rain between 28/12/2019 - 03/01/2020, making a total of 659 mm of precipitation in just 10 days!