When Is It Winter In Japan !full! 〈PRO — 2026〉

December is a festive time. While the air is crisp, the extreme cold hasn't quite settled in yet. Illuminations (massive light displays) take over city centers, and the atmosphere is high-energy leading up to New Year's Eve. 2. Deep Winter (January)

Here is the full breakdown of when winter occurs, how the weather behaves, and what to expect during the season. when is it winter in japan