Japan Now! Typhoon Dujuan Is Aiming at Japan’s Biggest Fall Holiday in a Decade. What Travelers Need to Know (9/16)

If your Japan trip overlaps with the next week, this is the forecast to watch. Typhoon No. 25, internationally named Dujuan, formed near the Mariana Islands on Tuesday night and is strengthening as it tracks toward Japan, with the Ogasawara Islands in its path Friday into Saturday and, depending on its course, eastern Japan including the Tokyo area exposed early next week. The timing could hardly be worse: it collides with Silver Week, Japan’s five-day autumn holiday, the first of its kind in over a decade, when tens of millions of people travel at once.

【台風25号情報】昨夜21時、マリアナ諸島で大型の台風25号(ドゥージェン)が発生しました。

明日18日(金)〜明後日19日(土)に小笠原諸島に接近したあと、シルバーウィークの5連休に関東など東日本へ接近するおそれがあります。今後の進路に注意してください。https://t.co/BeOWkd8JsI pic.twitter.com/Jbe8o8r1Af

— ウェザーニュース (@wni_jp) September 16, 2026

Quick Answer: Typhoon Dujuan (No. 25) formed September 16 and is forecast to approach the Ogasawara Islands September 18-19 with storm-force winds, then potentially draw near eastern Japan, including the Kanto and Tohoku regions, during the September 19-23 Silver Week holiday. The track remains uncertain, but heavy rain is possible across Japan even before the storm arrives, because its moisture is feeding a stalled autumn rain front. Travelers should monitor forecasts daily and build flexibility into holiday plans.

Two features make this system worth respecting. First, its size: Dujuan is classified as a “large” typhoon, with gale-force winds extending as far as 950 kilometers from its center on the north side, meaning its effects arrive long before, and far beyond, the eye. As of early September 17, it measured 996 hPa with gusts to 30 m/s, and the Japan Meteorological Agency projects intensification to 980 hPa with gusts near 40 m/s (about 90 mph) by Friday night as it nears Ogasawara. Second, the setup over the mainland: an autumn rain front is stalled across Japan, and as the typhoon pushes north, its humid air will pump into that front like fuel, so parts of eastern and western Japan may see intensifying rain days before the typhoon itself is anywhere close. Forecasters warn total rainfall could become substantial in some regions depending on the final track, which is still ranging widely; official forecasts beyond September 22 have not yet been issued.

【速報】台風25号発生 連休中に関東直撃コースか
｜
日本の南海上にある熱帯低気圧は先ほど、『台風25号』となった

▼進路はより“列島寄り”に変化…最接近は月曜日か
予報円の西を通った場合は近畿〜北日本にかけて広い範囲で影響が出る恐れ
中心付近を通ると、関東直撃となる恐れ… pic.twitter.com/dzN3RgZ7cE

— 報道ステーション＋サタステ (@hst_tvasahi) September 16, 2026

Weathernews summed up the situation: “After approaching the Ogasawara Islands on Friday the 18th through Saturday the 19th, the typhoon may approach eastern Japan, including Kanto, during the five-day Silver Week holiday. Please stay alert to future track updates.”

What Is Silver Week (and Why the Timing Stings)

For US readers, the context: Silver Week is autumn’s answer to Golden Week, a cluster of September national holidays, Respect for the Aged Day and the Autumnal Equinox, that occasionally aligns into a long weekend. This year is the jackpot alignment: Saturday, September 19 through Wednesday, September 23 forms a full five-day holiday, the first since 2015, and Japan has planned accordingly, with packed trains, full flights, sold-out hotels, and outdoor events nationwide, including the ABEMA Anime Festival taking over Shibuya on the 19th and 20th. A typhoon brushing eastern Japan mid-holiday would disrupt the largest travel wave of the season: Shinkansen and airline schedules, ferry routes, and the countless outdoor plans built on this rare five-day window. The last comparable five-day Silver Week drew record domestic travel; this one now comes with a weather asterisk.

We will update this article as the track firms up. As of publication, the honest summary is: Ogasawara, prepare now; eastern Japan, watch closely; everyone with Silver Week plans, hold them loosely.

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wikipedia
https://en.wikipedia.org/wiki/Typhoon