Climate averages 1991–2020
Morioka weather
in September.
A mild, wet month: the 3rd warmest and the joint 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a mild month in Morioka: daytime highs average 21.9°C and nights cool to about 14.8°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 137 mm of rain on roughly 12 days, which makes September a wet month (the joint 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 Hanamaki (35 km away). In September its highs average 22.5°C, 0.6°C warmer than Morioka, with 147 mm of rain.
Among the 303 cities listed in Japan, Morioka ranks 290th of 303 for the warmest September highs and joint 5th of 303 for the driest September (rainfall, lowest first). The mean September high of those 303 cities is 25.7°C; Morioka is 3.8°C cooler than that mean.
From September to October, average highs fall by 6.0°C to 15.9°C, and monthly rainfall falls from 137 mm to 110 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
Morioka climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -0.4°C-7.9°C | -7.9°C | 64 | 11.5 | 9.710 h |
| February | 0.6°C-7.3°C | -7.3°C | 61 | 11.3 | 10.711 h |
| March | 4.5°C-3.7°C | -3.7°C | 93 | 14.7 | 11.912 h |
| April | 11.6°C1.9°C | 1.9°C | 92 | 14.0 | 13.213 h |
| May | 18.1°C8.2°C | 8.2°C | 94 | 12.8 | 14.314 h |
| June | 21.8°C13.3°C | 13.3°C | 101 | 12.3 | 14.915 h |
| July | 24.8°C17.7°C | 17.7°C | 148 | 16.3 | 14.715 h |
| August | 25.9°C18.8°C | 18.8°C | 137 | 14.6 | 13.714 h |
| September, selected | 21.9°C14.8°C | 14.8°C | 137 | 12.4 | 12.512 h |
| October | 15.9°C8.0°C | 8.0°C | 110 | 11.4 | 11.211 h |
| November | 9.0°C1.6°C | 1.6°C | 78 | 12.9 | 10.010 h |
| December | 2.3°C-4.5°C | -4.5°C | 77 | 13.2 | 9.49 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
- Hanamaki in SeptemberJapan · 35 kmHigh 22.5°C · Low 15.3°C · 147 mm rain
- Kitakami in SeptemberJapan · 46 kmHigh 22.6°C · Low 15.3°C · 154 mm rain
- Ōshū in SeptemberJapan · 62 kmHigh 23.2°C · Low 16.1°C · 151 mm rain
- Daisen in SeptemberJapan · 64 kmHigh 23.3°C · Low 15.8°C · 152 mm rain
- Yokote in SeptemberJapan · 67 kmHigh 23.1°C · Low 15.8°C · 156 mm rain
- Ichinoseki in SeptemberJapan · 87 kmHigh 23.3°C · Low 16.1°C · 149 mm rain
- Akita in SeptemberJapan · 88 kmHigh 23.0°C · Low 17.5°C · 190 mm rain
- Hachinohe in SeptemberJapan · 94 kmHigh 22.9°C · Low 16.0°C · 127 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 Morioka) is explained once on the Morioka year overview and on the Sources, method and limits page.