Climate averages 1991–2020
Kashiwazaki weather
in December.
A cold, very wet month: the 10th warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cold month in Kashiwazaki: daytime highs average 7.4°C and nights cool to about 0.8°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 208 mm of rain on roughly 24 days, which makes December a very wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 9 h 39 min on an average December day.
The nearest other city in this atlas is Nagaoka (28 km away). In December its highs average 7.0°C, about as warm as Kashiwazaki, with 181 mm of rain.
Among the 303 cities listed in Japan, Kashiwazaki ranks joint 251st of 303 for the warmest December highs and 291st of 303 for the driest December (rainfall, lowest first). The mean December high of those 303 cities is 9.5°C; Kashiwazaki is 2.1°C cooler than that mean.
From December to January, average highs fall by 3.3°C to 4.1°C, and monthly rainfall rises from 208 mm to 216 mm.
The annual picture
December in context
Monthly rainfall
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
Kashiwazaki climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 4.1°C-1.6°C | -1.6°C | 216 | 25.6 | 9.910 h |
| February | 4.5°C-1.9°C | -1.9°C | 157 | 21.3 | 10.811 h |
| March | 8.8°C0.2°C | 0.2°C | 142 | 20.0 | 11.912 h |
| April | 15.6°C5.4°C | 5.4°C | 104 | 14.5 | 13.113 h |
| May | 21.2°C11.1°C | 11.1°C | 104 | 12.9 | 14.214 h |
| June | 24.8°C16.1°C | 16.1°C | 126 | 13.5 | 14.715 h |
| July | 28.0°C20.7°C | 20.7°C | 212 | 16.9 | 14.514 h |
| August | 29.6°C22.0°C | 22.0°C | 145 | 14.5 | 13.614 h |
| September | 25.4°C18.2°C | 18.2°C | 163 | 14.9 | 12.512 h |
| October | 19.5°C12.0°C | 12.0°C | 159 | 15.3 | 11.311 h |
| November | 13.5°C6.0°C | 6.0°C | 159 | 18.2 | 10.210 h |
| December, selected | 7.4°C0.8°C | 0.8°C | 208 | 23.7 | 9.610 h |
Rainfall is the average of the 30 separate monthly totals. A rain 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
- Nagaoka in DecemberJapan · 28 kmHigh 7.0°C · Low 0.2°C · 181 mm rain
- Jōetsu in DecemberJapan · 37 kmHigh 7.4°C · Low 1.2°C · 247 mm rain
- Sanjō in DecemberJapan · 45 kmHigh 7.1°C · Low 0.6°C · 202 mm rain
- Tsubame in DecemberJapan · 47 kmHigh 7.3°C · Low 1.7°C · 182 mm rain
- Niigata in DecemberJapan · 75 kmHigh 7.5°C · Low 2.7°C · 195 mm rain
- Nagano in DecemberJapan · 86 kmHigh 5.3°C · Low -2.3°C · 138 mm rain
- Shibata in DecemberJapan · 95 kmHigh 6.4°C · Low 0.7°C · 233 mm rain
- Shibukawa in DecemberJapan · 106 kmHigh 8.4°C · Low 0.4°C · 59 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 Kashiwazaki) is explained once on the Kashiwazaki year overview and on the Sources, method and limits page.