Monthly climate guide
Tokyo weather in September
With highs near 27°C (80°F) and lows around 19°C (66°F), September feels warm in Tokyo. Rainfall averages about 239 mm (very wet) and the sky is often cloudy. Daytime highs are 4°C cooler than August and 6°C warmer than October.
What stands out in September
- Rain is above Tokyo's usual level, by about 78%.
- It cools down fast from here: October is about 6°C cooler.
- Only 2 months are warmer in Tokyo than September.
- Humidity near 84% makes 27°C feel stickier than it sounds.
It's usually the wettest month of the year.
Avg high
27°C
80°F
Avg low
19°C
66°F
Rainfall
239 mm
very wet
Humidity
84%
relative
Sky
73%
cloud · often cloudy
Tokyo weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 8°C / 46°F | -2°C / 29°F | 55 mm | 76% | 43% |
| February | 9°C / 48°F | -1°C / 30°F | 66 mm | 77% | 57% |
| March | 13°C / 55°F | 2°C / 35°F | 112 mm | 77% | 59% |
| April | 18°C / 64°F | 7°C / 44°F | 134 mm | 77% | 64% |
| May | 23°C / 73°F | 12°C / 54°F | 132 mm | 78% | 66% |
| June | 25°C / 77°F | 17°C / 62°F | 197 mm | 83% | 82% |
| July | 29°C / 84°F | 21°C / 70°F | 183 mm | 84% | 77% |
| August | 31°C / 87°F | 23°C / 73°F | 130 mm | 82% | 66% |
| September | 27°C / 80°F | 19°C / 66°F | 239 mm | 84% | 73% |
| October | 21°C / 70°F | 12°C / 54°F | 214 mm | 83% | 68% |
| November | 16°C / 61°F | 6°C / 43°F | 91 mm | 82% | 56% |
| December | 11°C / 51°F | 1°C / 33°F | 59 mm | 78% | 48% |
What to pack for September
- T-shirts plus a light layer for the evening
- Comfortable trainers or sandals for long walks
- A compact umbrella or packable rain jacket
- Water-resistant shoes
- Quick-dry fabrics — it feels stickier than the temperature suggests
Is September a good time to visit Tokyo?
Our Tokyo guide recommends: March to May for cherry blossoms, or September to November for mild temperatures and autumn colour.
Get an IC card (Suica or Pasmo) on arrival — it works across nearly all trains, subways, and buses, and at many convenience stores.
Best time to visit Tokyo →Other Japan cities in September
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Tokyo weather in September. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/japan/tokyo/september
<a href="https://weathercompare.eu/weather/japan/tokyo/september">Tokyo weather in September</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/japan/tokyo" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Tokyo weather in September"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/japan/tokyo/september">Tokyo weather in September</a> – WeatherCompare</p>
Tokyo in September: quick answers
Is September a good time to visit Tokyo?
September is one of the wetter months in Tokyo, with about 239 mm of rain. You can still go: pack a rain jacket and keep plans flexible.
How warm is Tokyo in September?
Average highs are about 27°C (80°F) and average lows about 19°C (66°F), based on 10 years of daily data.
Does it rain a lot in Tokyo in September?
Tokyo typically gets around 239 mm of rain in September — very wet. It's usually the wettest month of the year.
When is the best time to visit Tokyo?
March to May for cherry blossoms, or September to November for mild temperatures and autumn colour.
Figures are long-term averages for the area around Tokyo (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.