Climate averages 1991–2020
Sendai weather
in October.
A mild, wet month: the 6th warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
October is a mild month in Sendai: daytime highs average 18.2°C and nights cool to about 11.6°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 141 mm of rain on roughly 11 days, which makes October a wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 14 min on an average October day.
The nearest other city in this atlas is Natori-shi (11 km away). In October its highs average 18.5°C, about as warm as Sendai, with 159 mm of rain.
Among the 303 cities listed in Japan, Sendai ranks joint 264th of 303 for the warmest October highs and joint 79th of 303 for the driest October (rainfall, lowest first). The mean October high of those 303 cities is 20.4°C; Sendai is 2.1°C cooler than that mean.
From October to November, average highs fall by 5.6°C to 12.6°C, and monthly rainfall falls from 141 mm to 63 mm.
The annual picture
October in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Sendai climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 4.1°C-2.6°C | -2.6°C | 63 | 11.1 | 9.810 h |
| February | 4.9°C-2.9°C | -2.9°C | 49 | 9.3 | 10.711 h |
| March | 8.4°C-0.1°C | -0.1°C | 87 | 11.6 | 11.912 h |
| April | 13.8°C4.7°C | 4.7°C | 94 | 11.2 | 13.213 h |
| May | 18.3°C10.3°C | 10.3°C | 103 | 11.4 | 14.214 h |
| June | 21.2°C15.1°C | 15.1°C | 129 | 13.4 | 14.815 h |
| July | 24.7°C19.4°C | 19.4°C | 187 | 17.3 | 14.515 h |
| August | 26.2°C21.0°C | 21.0°C | 169 | 16.1 | 13.614 h |
| September | 23.3°C17.7°C | 17.7°C | 167 | 14.3 | 12.512 h |
| October, selected | 18.2°C11.6°C | 11.6°C | 141 | 11.0 | 11.211 h |
| November | 12.6°C5.2°C | 5.2°C | 63 | 9.3 | 10.110 h |
| December | 6.9°C0.3°C | 0.3°C | 58 | 11.0 | 9.610 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
October in nearby cities
- Natori-shi in OctoberJapan · 11 kmHigh 18.5°C · Low 12.6°C · 159 mm rain
- Ōsaki in OctoberJapan · 37 kmHigh 18.2°C · Low 9.9°C · 141 mm rain
- Ishinomaki in OctoberJapan · 41 kmHigh 18.2°C · Low 13.6°C · 140 mm rain
- Yamagata in OctoberJapan · 44 kmHigh 16.9°C · Low 8.7°C · 118 mm rain
- Tome in OctoberJapan · 55 kmHigh 18.2°C · Low 10.4°C · 126 mm rain
- Fukushima in OctoberJapan · 67 kmHigh 18.6°C · Low 10.4°C · 144 mm rain
- Ichinoseki in OctoberJapan · 76 kmHigh 17.7°C · Low 9.3°C · 122 mm rain
- Yonezawa in OctoberJapan · 77 kmHigh 17.6°C · Low 10.1°C · 139 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Sendai) is explained once on the Sendai year overview and on the Sources, method and limits page.