Current date: 2025-12-26 (JST)
What is the Forecast?
Japan’s weather over the New Year holiday period is expected to feature a significant temperature drop and potential snow, particularly after January 1st. 1 While the last few days of December may be relatively mild, the weather pattern is forecast to shift to a stronger winter setup as the new year begins. This change could affect travel plans during one of the busiest times of the year.
Why This Matters for Travelers
This forecast is critical for anyone traveling in Japan between late December and early January. The period from January 1st onwards coincides with the “U-turn rush,” when many people travel back to major cities after visiting their hometowns. A strengthening winter pressure system could bring heavy snow to the Japan Sea coast and northern regions, potentially causing delays or cancellations for trains and flights. 1
Even on the Pacific side, including Tokyo, the start of the year is expected to be cold, with a chance of isolated rain or snow. Travelers will need to be prepared for cold winter conditions nationwide.
Regional Weather Breakdown
The weather will vary significantly depending on the region.
| Period | Region | Expected Weather |
| End of Year (Dec 28-31) | Japan Sea Coast & Northern Japan | Cloudy with periods of rain or snow. Temperatures may be temporarily mild, causing snow to melt in some areas. |
| Pacific Side (Tokyo, Osaka, etc.) | Generally clear or partly cloudy. Major weather disruptions are not expected. | |
| New Year (Jan 1 onwards) | Japan Sea Coast & Northern Japan | Colder with a higher chance of heavy snow. Travel disruptions are possible. |
| Pacific Side (Tokyo, Osaka, etc.) | Colder, with less chance of clear skies. Some passing rain or snow showers are possible. |
What to Do
•Check Transport Information: If your travel plans involve the Japan Sea coast or northern Japan after January 1st, check the websites of JR, airlines, and bus companies for the latest operational status.
•Pack Warm Clothing: Nationwide temperatures will be cold. A heavy winter coat, thermal layers, gloves, a scarf, and a hat are essential. Waterproof footwear is recommended, especially for snowy regions.
•Stay Updated: The forecast can change. Check daily weather updates from the Japan Meteorological Agency (JMA) or other reliable sources like WeatherNews. 1
Official Information
This forecast is based on information released by WeatherNews Japan on December 26, 2025. It reflects the expected atmospheric pressure patterns for the holiday period.
Summary
Travelers in Japan during the New Year holiday should prepare for a shift to colder, more severe winter weather from January 1st. The end of December will be relatively calm, but the start of the new year brings a risk of heavy snow and travel disruptions, especially for those on the Japan Sea coast. Packing warm clothing and checking transportation schedules frequently will be key to navigating the holiday week.
Sources / References
[1] Weathernews Inc.: 年末年始の天気 Uターンラッシュは強い寒気の影響に注意 (https://weathernews.jp/news/202512/260136/ )
Notes & Limitations
•This is a long-range forecast. The exact timing and intensity of the cold air and snowfall can change.
•”U-turn rush” typically peaks around January 3rd and 4th, which is when travel could be most affected.
Certainty Level
Medium
