The timing of when it starts getting cold again depends heavily on the geographic location. For example, in northern European countries like the Netherlands or Denmark, the cold typically starts to increase again after summer, with more stable cold and possibly snow usually beginning in November or December. November may still be somewhat mild and rainy, but from December into January, the winter cold becomes more pronounced with a chance of snow and frosty conditions. In the UK, temperatures in autumn start off around average, potentially dipping slightly below average early in the season, but then there is often a return to warmer conditions in the second half of autumn. However, blocking high-pressure systems may bring settled, fine, and cooler weather with some chilly nights from October onwards. Therefore, if the question is about when it generally starts getting noticeably cold again after summer, the answer is typically from October to November onward in many temperate and northern regions, with colder and more stable winter conditions setting in December and January onwards.