Climate averages 1991–2020
Morioka weather
in December.
A cold, moderately wet month: the 10th warmest and the 3rd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cold month in Morioka: daytime highs average 2.3°C and nights cool to about -4.5°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 77 mm of rain on roughly 13 days, which makes December a moderately wet month (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 9 h 25 min on an average December day.
The nearest other city in this atlas is Hanamaki (35 km away). In December its highs average 3.5°C, 1.2°C warmer than Morioka, with 98 mm of rain.
Among the 303 cities listed in Japan, Morioka ranks joint 289th of 303 for the warmest December highs and 213th of 303 for the driest December (rainfall, lowest first). The mean December high of those 303 cities is 9.5°C; Morioka is 7.2°C cooler than that mean.
From December to January, average highs fall by 2.7°C to -0.4°C, and monthly precipitation falls from 77 mm to 64 mm.
The annual picture
December 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 | 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, selected | 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
December in nearby cities
- Hanamaki in DecemberJapan · 35 kmHigh 3.5°C · Low -3.5°C · 98 mm rain
- Kitakami in DecemberJapan · 46 kmHigh 3.7°C · Low -3.0°C · 86 mm rain
- Ōshū in DecemberJapan · 62 kmHigh 4.9°C · Low -1.9°C · 68 mm rain
- Daisen in DecemberJapan · 64 kmHigh 3.7°C · Low -2.7°C · 130 mm rain
- Yokote in DecemberJapan · 67 kmHigh 3.6°C · Low -2.9°C · 133 mm rain
- Ichinoseki in DecemberJapan · 87 kmHigh 5.3°C · Low -1.9°C · 58 mm rain
- Akita in DecemberJapan · 88 kmHigh 4.6°C · Low 0.3°C · 199 mm rain
- Hachinohe in DecemberJapan · 94 kmHigh 3.9°C · Low -2.5°C · 50 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.