Climate averages 1991–2020
Hachinohe weather
in September.
A warm, wet month: the 3rd warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Hachinohe: daytime highs average 22.9°C and nights cool to about 16.0°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 127 mm of rain on roughly 11 days, which makes September a wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 30 min on an average September day.
The nearest other city in this atlas is Aomori (74 km away). In September its highs average 22.9°C, about as warm as Hachinohe, with 145 mm of rain.
Among the 303 cities listed in Japan, Hachinohe ranks joint 283rd of 303 for the warmest September highs and 4th of 303 for the driest September (rainfall, lowest first). The mean September high of those 303 cities is 25.7°C; Hachinohe is 2.7°C cooler than that mean.
From September to October, average highs fall by 5.8°C to 17.2°C, and monthly rainfall falls from 127 mm to 102 mm.
The annual picture
September in context
Monthly precipitation
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
Hachinohe climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 1.1°C-5.6°C | -5.6°C | 46 | 7.4 | 9.610 h |
| February | 1.9°C-5.8°C | -5.8°C | 48 | 7.5 | 10.611 h |
| March | 6.4°C-2.2°C | -2.2°C | 72 | 10.6 | 11.912 h |
| April | 13.0°C3.6°C | 3.6°C | 78 | 11.9 | 13.313 h |
| May | 18.3°C9.2°C | 9.2°C | 88 | 11.4 | 14.414 h |
| June | 21.4°C13.6°C | 13.6°C | 91 | 10.7 | 15.015 h |
| July | 24.8°C18.2°C | 18.2°C | 132 | 13.4 | 14.815 h |
| August | 26.3°C19.6°C | 19.6°C | 132 | 13.0 | 13.814 h |
| September, selected | 22.9°C16.0°C | 16.0°C | 127 | 11.2 | 12.513 h |
| October | 17.2°C9.5°C | 9.5°C | 102 | 9.2 | 11.211 h |
| November | 10.6°C3.1°C | 3.1°C | 54 | 9.0 | 10.010 h |
| December | 3.9°C-2.5°C | -2.5°C | 50 | 8.0 | 9.39 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet 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
September in nearby cities
- Aomori in SeptemberJapan · 74 kmHigh 22.9°C · Low 15.8°C · 145 mm rain
- Hirosaki in SeptemberJapan · 87 kmHigh 22.7°C · Low 14.9°C · 154 mm rain
- Morioka in SeptemberJapan · 94 kmHigh 21.9°C · Low 14.8°C · 137 mm rain
- Hanamaki in SeptemberJapan · 128 kmHigh 22.5°C · Low 15.3°C · 147 mm rain
- Kitakami in SeptemberJapan · 139 kmHigh 22.6°C · Low 15.3°C · 154 mm rain
- Daisen in SeptemberJapan · 146 kmHigh 23.3°C · Low 15.8°C · 152 mm rain
- Akita in SeptemberJapan · 146 kmHigh 23.0°C · Low 17.5°C · 190 mm rain
- Ōshū in SeptemberJapan · 154 kmHigh 23.2°C · Low 16.1°C · 151 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 Hachinohe) is explained once on the Hachinohe year overview and on the Sources, method and limits page.