The cold weather typically starts to arrive in the Netherlands by late September to October as temperatures gradually return closer to average and a northerly flow brings colder air. Early October can still be uncertain with weather fluctuations, but generally, unseasonably cold periods begin to be more common from late September onward. Winter officially starts astronomically around December 21, with meteorological winter starting December 1, during which average temperatures are around 3.4°C (38°F).
Typical Dutch winters are cold but not freezing, with the coldest months being December, January, and February, when lows often hover around 0°C (32°F). Late September and early October can have unsettled, windy, and cooler conditions ahead of the colder months. Spring warming usually starts around March or April but can be variable with occasional frost or snow even in early spring.
In summary, it generally begins to get cold in the Netherlands from late September, with true winter coldest months being December through February.
