Tokyo Weather in September
Planning a trip to Japan in September? Here's what the weather will really be like in Tokyo — including the one thing that can quietly derail your travel plans this time of year.
September is the month Tokyo finally starts to breathe again. Highs drop to 78–83°F, overnight lows slide into the 60s by month's end, and the brutal humidity of August begins to ease. The catch: September is peak typhoon season. Direct hits on Tokyo are uncommon, but heavy rain from passing typhoons can flood JR rail lines, snarl the subway, and cause delays at the airports — worth knowing before you book tight transfers.
Meteorologist Ian Schwartz (who honeymooned in Tokyo, Japan in early September) breaks down what to expect so you can plan around the trickier days.
At a glance
What's covered
- Highs, lows, and when the cooling actually kicks in
- Rainy days and "gorilla rain" thunderstorms
- Peak typhoon season — what's likely vs. what to plan for
- How typhoons can disrupt rail and airport travel
- Final takeaways and packing notes
Jump to a moment
Tokyo, Japan in September FAQ
What is the weather like in Tokyo, Japan in September?
Relief from the heat — but peak typhoon season.
- Highs: 78–83°F
- Lows: 65–72°F (60s by month's end)
- Rain: 9–11 days, humidity easing
- Peak typhoon season — watch for rail and airport delays
Will a typhoon hit Tokyo, Japan in September?
Direct hits on Tokyo are uncommon, but September is peak typhoon season for Japan. Even passing typhoons (well offshore) can dump heavy rain that floods JR rail lines, snarls the subway, and delays airports. If you have tight transfer plans, build in buffer.
Is September a good time to visit Tokyo?
Generally yes — temperatures cool from August's brutality, humidity eases, crowds are smaller than peak fall. The main risk is typhoon-related travel disruption. If you're flexible on day-to-day plans, September is a solid bet.