Climate averages 1991–2020
Azumino weather
in December.
A cold, 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 Azumino: daytime highs average 4.9°C and nights cool to about -3.8°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 107 mm of rain on roughly 16 days, which makes December a wet month (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 9 h 44 min on an average December day.
The nearest other city in this atlas is Matsumoto (9 km away). In December its highs average 5.7°C, 0.8°C warmer than Azumino, with 107 mm of rain.
Among the 303 cities listed in Japan, Azumino ranks joint 276th of 303 for the warmest December highs and joint 267th of 303 for the driest December (rainfall, lowest first). The mean December high of those 303 cities is 9.5°C; Azumino is 4.6°C cooler than that mean.
From December to January, average highs fall by 3.3°C to 1.6°C, and monthly precipitation falls from 107 mm to 106 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
Azumino climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 1.6°C-6.7°C | -6.7°C | 106 | 15.3 | 10.010 h |
| February | 2.9°C-5.8°C | -5.8°C | 100 | 12.6 | 10.811 h |
| March | 7.1°C-1.7°C | -1.7°C | 155 | 15.0 | 11.912 h |
| April | 13.8°C3.5°C | 3.5°C | 138 | 13.6 | 13.113 h |
| May | 20.6°C9.9°C | 9.9°C | 156 | 14.2 | 14.114 h |
| June | 23.9°C15.2°C | 15.2°C | 224 | 18.2 | 14.615 h |
| July | 27.2°C19.2°C | 19.2°C | 246 | 19.3 | 14.414 h |
| August | 28.3°C20.3°C | 20.3°C | 155 | 15.0 | 13.514 h |
| September | 24.2°C16.3°C | 16.3°C | 199 | 15.8 | 12.412 h |
| October | 18.4°C9.5°C | 9.5°C | 193 | 15.3 | 11.311 h |
| November | 12.1°C2.5°C | 2.5°C | 115 | 13.3 | 10.310 h |
| December, selected | 4.9°C-3.8°C | -3.8°C | 107 | 15.5 | 9.710 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
- Matsumoto in DecemberJapan · 9 kmHigh 5.7°C · Low -3.4°C · 107 mm rain
- Ueda in DecemberJapan · 38 kmHigh 6.7°C · Low -1.4°C · 88 mm rain
- Nagano in DecemberJapan · 48 kmHigh 5.3°C · Low -2.3°C · 138 mm rain
- Saku in DecemberJapan · 54 kmHigh 6.9°C · Low -1.1°C · 48 mm rain
- Takayama in DecemberJapan · 60 kmHigh 4.5°C · Low -3.2°C · 159 mm rain
- Toyama in DecemberJapan · 75 kmHigh 6.9°C · Low -0.7°C · 214 mm rain
- Iida in DecemberJapan · 86 kmHigh 7.3°C · Low -0.7°C · 100 mm rain
- Imizu in DecemberJapan · 86 kmHigh 7.3°C · Low 0.3°C · 214 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 Azumino) is explained once on the Azumino year overview and on the Sources, method and limits page.
Matsumoto lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.