Typhoon No. 25 Dujuan approaches Tokyo 20–21 Sept (Silver Week): heavy rain at Narita and Haneda, gusts to 45 knots Monday morning

This week's news · Checked 2026-09-20

What happened. Typhoon No. 25 Dujuan is forecast to pass offshore southeast of the Boso Peninsula on the morning of Monday 21 September 2026, in the middle of Silver Week (19–23 September). According to Weathernews' aviation forecast (18 September, 16:00 JST): Narita gets moderate rain and thunderstorms on 20–21 September, with winds peaking around 25 knots on the 21st daytime and easing after 21:00 JST; Haneda sees winds above 30 knots around 09:00 JST on the 21st with gusts up to 45 knots, moderate rain continuing, easing after 21:00 JST. Tokai Kisen ferries to Oshima, Toshima and Mikurajima were cancelled on 19 September, and ANA cancelled all Hachijojima flights on 20 September (The Japan Times, 18 September; ferry reports 19 September).

What it means for you.

• Flying into or out of Tokyo on 20–21 September: delays and cancellations are likely, especially Monday 21 morning to afternoon. Check your flight status the night before in the airline app; if a typhoon waiver lets you change dates free, use it. Get to the airport early, and don't connect to a domestic flight with less than 3 hours.
• Shinkansen and trains: the Tokaido line may slow or stop if winds exceed limits; the same day is also a Silver Week return day (Wednesday 23 is busier). If you can, move Tokyo ⇄ Osaka on the morning of the 20th or from the 22nd. The Nozomi is still 100% reserved until 23 September ([explainer](/news-nozomi-all-reserved-silver-week/)).
• Izu and Ogasawara islands: ferries are cancelled; don't plan island trips until 23 September.
• From 22 September Kanto weather recovers. This is the second typhoon this month after No. 24 Krovanh ([what happened](/news-typhoon-24-krovanh/)); September is the peak typhoon month, see [weather by month](/japan-weather-by-month/) to plan.

Sleeping near the airport the night before a morning flight on 21–22 September: Narita and Haneda hotels on Trip.com (filter for free cancellation).

Affiliate links may be used; your price does not change. Sources: Weathernews Aviation, 18 September 2026 16:00 JST (English); The Japan Times, 18 September 2026 (English). Checked 20 September 2026 morning; forecasts change.