Climate averages 1991–2020
Yamagata weather
in December.
A cold, wet month: the 10th warmest and the 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cold month in Yamagata: daytime highs average 3.9°C and nights cool to about -3.0°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 120 mm of rain on roughly 20 days, which makes December a wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 9 h 34 min on an average December day.
The nearest other city in this atlas is Yonezawa (42 km away). In December its highs average 4.7°C, 0.8°C warmer than Yamagata, with 181 mm of rain.
Among the 303 cities listed in Japan, Yamagata ranks joint 282nd of 303 for the warmest December highs and 275th of 303 for the driest December (rainfall, lowest first). The mean December high of those 303 cities is 9.5°C; Yamagata is 5.6°C cooler than that mean.
From December to January, average highs fall by 3.1°C to 0.8°C, and monthly precipitation rises from 120 mm to 126 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
Yamagata climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 0.8°C-6.4°C | -6.4°C | 126 | 21.8 | 9.810 h |
| February | 1.8°C-6.0°C | -6.0°C | 91 | 18.1 | 10.711 h |
| March | 5.6°C-3.1°C | -3.1°C | 109 | 16.9 | 11.912 h |
| April | 12.8°C2.0°C | 2.0°C | 94 | 13.7 | 13.213 h |
| May | 19.2°C8.4°C | 8.4°C | 91 | 11.9 | 14.214 h |
| June | 22.6°C13.8°C | 13.8°C | 119 | 12.5 | 14.815 h |
| July | 25.7°C18.4°C | 18.4°C | 189 | 17.4 | 14.515 h |
| August | 26.9°C19.5°C | 19.5°C | 146 | 14.8 | 13.614 h |
| September | 22.8°C15.5°C | 15.5°C | 125 | 13.0 | 12.512 h |
| October | 16.9°C8.7°C | 8.7°C | 118 | 12.4 | 11.211 h |
| November | 10.6°C2.2°C | 2.2°C | 95 | 15.3 | 10.110 h |
| December, selected | 3.9°C-3.0°C | -3.0°C | 120 | 20.0 | 9.610 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
- Yonezawa in DecemberJapan · 42 kmHigh 4.7°C · Low -1.6°C · 181 mm rain
- Sendai in DecemberJapan · 44 kmHigh 6.9°C · Low 0.3°C · 58 mm rain
- Natori-shi in DecemberJapan · 46 kmHigh 7.6°C · Low 1.7°C · 55 mm rain
- Fukushima in DecemberJapan · 54 kmHigh 6.9°C · Low -1.0°C · 55 mm rain
- Ōsaki in DecemberJapan · 66 kmHigh 6.2°C · Low -1.5°C · 58 mm rain
- Tsuruoka in DecemberJapan · 72 kmHigh 5.9°C · Low 1.8°C · 311 mm rain
- Ishinomaki in DecemberJapan · 84 kmHigh 7.5°C · Low 2.6°C · 56 mm rain
- Tome in DecemberJapan · 87 kmHigh 6.3°C · Low -0.9°C · 52 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 Yamagata) is explained once on the Yamagata year overview and on the Sources, method and limits page.