Click on a day for an hourly weather forecast
The weather in Tokyo in September is hot. The average temperatures are between 21°C and 27°C.
You can expect rain for roughly half of the month of September in Tokyo. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Our weather forecast can give you a great sense of what weather to expect in Tokyo in September 2025.
If you’re planning to visit Tokyo in the near future, we highly recommend that you review the 14 day weather forecast for Tokyo before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 9° / 2° | 5 | 22 | 4 | 90 mm | Bad | Tokyo in January |
| February | 10° / 3° | 6 | 18 | 5 | 127 mm | Bad | Tokyo in February |
| March | 13° / 6° | 8 | 22 | 1 | 192 mm | Bad | Tokyo in March |
| April | 18° / 10° | 7 | 23 | 0 | 201 mm | Ok | Tokyo in April |
| May | 23° / 16° | 8 | 23 | 0 | 190 mm | Good | Tokyo in May |
| June | 25° / 19° | 8 | 22 | 0 | 258 mm | Good | Tokyo in June |
| July | 29° / 24° | 8 | 23 | 0 | 192 mm | Ok | Tokyo in July |
| August | 31° / 25° | 7 | 24 | 0 | 158 mm | Ok | Tokyo in August |
| September | 27° / 21° | 8 | 22 | 0 | 248 mm | Good | Tokyo in September |
| October | 22° / 15° | 7 | 24 | 0 | 286 mm | Ok | Tokyo in October |
| November | 17° / 11° | 5 | 25 | 0 | 121 mm | Good | Tokyo in November |
| December | 12° / 5° | 5 | 25 | 1 | 99 mm | Ok | Tokyo in December |