Climate averages 1991–2020
Kamagaya weather
in December.
A cool, moderately wet month: the 10th warmest and the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cool month in Kamagaya: daytime highs average 10.6°C and nights cool to about 2.7°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 63 mm of rain on roughly 8 days, which makes December a moderately wet month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 9 h 47 min on an average December day.
The nearest other city in this atlas is Matsudo (9 km away). In December its highs average 10.7°C, about as warm as Kamagaya, with 63 mm of rain.
Among the 303 cities listed in Japan, Kamagaya ranks joint 112th of 303 for the warmest December highs and joint 109th of 303 for the driest December (rainfall, lowest first). The mean December high of those 303 cities is 9.5°C; Kamagaya is 1.1°C warmer than that mean.
From December to January, average highs fall by 2.4°C to 8.2°C, and monthly rainfall rises from 63 mm to 69 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
Kamagaya climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 8.2°C-0.1°C | -0.1°C | 69 | 6.8 | 10.010 h |
| February | 9.1°C0.5°C | 0.5°C | 66 | 8.0 | 10.911 h |
| March | 12.6°C3.8°C | 3.8°C | 120 | 12.2 | 11.912 h |
| April | 17.5°C8.8°C | 8.8°C | 114 | 11.9 | 13.113 h |
| May | 21.9°C13.9°C | 13.9°C | 131 | 11.6 | 14.014 h |
| June | 24.7°C17.9°C | 17.9°C | 161 | 13.7 | 14.515 h |
| July | 28.3°C21.9°C | 21.9°C | 153 | 13.7 | 14.314 h |
| August | 29.8°C23.3°C | 23.3°C | 112 | 11.8 | 13.514 h |
| September | 26.2°C20.1°C | 20.1°C | 175 | 14.2 | 12.412 h |
| October | 20.8°C14.3°C | 14.3°C | 207 | 12.9 | 11.311 h |
| November | 15.6°C8.3°C | 8.3°C | 98 | 10.1 | 10.310 h |
| December, selected | 10.6°C2.7°C | 2.7°C | 63 | 7.7 | 9.810 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
- Matsudo in DecemberJapan · 9 kmHigh 10.7°C · Low 2.5°C · 63 mm rain
- Narashino in DecemberJapan · 10 kmHigh 10.8°C · Low 3.7°C · 63 mm rain
- Kashiwa in DecemberJapan · 11 kmHigh 10.5°C · Low 2.0°C · 63 mm rain
- Yachiyo in DecemberJapan · 12 kmHigh 10.7°C · Low 3.8°C · 63 mm rain
- Nagareyama in DecemberJapan · 13 kmHigh 10.6°C · Low 1.7°C · 63 mm rain
- Katsushika in DecemberJapan · 14 kmHigh 10.8°C · Low 3.2°C · 59 mm rain
- Urayasu in DecemberJapan · 15 kmHigh 10.8°C · Low 3.5°C · 63 mm rain
- Toride in DecemberJapan · 16 kmHigh 10.7°C · Low 2.2°C · 56 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 Kamagaya) is explained once on the Kamagaya year overview and on the Sources, method and limits page.
Matsudo, Kashiwa and Nagareyama lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.