Berlin tyre swap window

Every column below is one day between 1 September and 30 April. Every row is one winter at the Berlin-Tempelhof weather station, thirty of them, oldest at the top. Drag the marker to the date you were planning to put the winter tyres on and the board counts how many of those thirty winters had already turned by then.

Thirty Berlin winters, day by day

16 October
Drag the marker, or use the arrow keys.
above freezing ground frost only air frost at night ice day, never above zero
 
 
winters with ground frost before this date
 
ground frost nights behind you, median winter
 
winters with a full air frost before this date
 
winters with an ice day before this date
 
Daily records for Berlin-Tempelhof, station 433, winters 1995/96 to 2024/25, from the Deutscher Wetterdienst Climate Data Center. Ground frost is the minimum 5 cm above the ground, which is the reading closest to the road surface. Air frost is the standard minimum at 2 m. 29 February is left out so every winter is the same length.