Is Sendai hot in September?
Days are typically warm at 25.1°C, while nights average 17.9°C.
Japan · 1991–2020 normal
Sendai in
September.
Typical September weather in Sendai: 25.1°C by day, 17.9°C at night, 213 mm of rain over 14.1 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high25.1°C
Typical low17.9°C
Rain213 mm
Wet days14.1
In the year-round weather comparison, September scores 56 out of 100 (June leads the year at 73). Daylight is calculated as 12 h 23 from latitude 38.27°. Open-water sea temperature is 22.6°C (28 km from the place centre).
September at a glance
What is Sendai like in September?
Plain answers from the measured climate record—not a forecast or a promise about a particular trip.
Does it rain much?
The measured monthly average is 213 mm across about 14 wet days.
How much daylight is there?
There are about 12 h 23 between sunrise and sunset at mid-month, calculated from the place latitude.
Is September a good time to visit?
September ranks 3 of 12 in our weather comparison; June ranks first.
Event window
Warm sea in September
The nearest open-water NOAA OISST 1991–2020 cell averages 22.6°C in September. A sheltered bay can run warmer than that open-water cell.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 2111149
- NOAA station
- JA000047590 · SENDAI
- Station distance
- 2.9 km from the place centre
- Coverage
- Good coverage · 20 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.
Next step
Choose your month.
Then plan the details.
The weather comparison for Sendai is based on climate evidence, not payments from travel companies. Flight, accommodation and activity links will be clearly labelled when they are added; there are no booking offers on this page today.
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