Climate averages 1991–2020
Honjō 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 Honjō: daytime highs average 9.4°C and nights cool to about 0.8°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 47 mm of rain on roughly 7 days, which makes December a moderately wet month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 9 h 45 min on an average December day.
The nearest other city in this atlas is Isesaki (9 km away). In December its highs average 9.1°C, about as warm as Honjō, with 47 mm of rain.
Among the 303 cities listed in Japan, Honjō ranks joint 225th of 303 for the warmest December highs and joint 3rd of 303 for the driest December (rainfall, lowest first). The mean December high of those 303 cities is 9.5°C; Honjō is level with that mean.
From December to January, average highs fall by 2.6°C to 6.8°C, and monthly rainfall rises from 47 mm to 54 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
Honjō climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 6.8°C-2.0°C | -2.0°C | 54 | 6.5 | 10.010 h |
| February | 7.8°C-1.5°C | -1.5°C | 54 | 7.3 | 10.811 h |
| March | 11.6°C1.5°C | 1.5°C | 99 | 11.9 | 11.912 h |
| April | 16.9°C6.6°C | 6.6°C | 111 | 11.7 | 13.113 h |
| May | 21.5°C12.0°C | 12.0°C | 132 | 12.9 | 14.114 h |
| June | 24.0°C16.6°C | 16.6°C | 173 | 16.4 | 14.615 h |
| July | 27.5°C20.8°C | 20.8°C | 199 | 17.8 | 14.414 h |
| August | 28.6°C21.9°C | 21.9°C | 152 | 16.0 | 13.514 h |
| September | 24.8°C18.4°C | 18.4°C | 199 | 16.1 | 12.412 h |
| October | 19.4°C12.3°C | 12.3°C | 187 | 12.8 | 11.311 h |
| November | 14.4°C5.8°C | 5.8°C | 69 | 7.8 | 10.310 h |
| December, selected | 9.4°C0.8°C | 0.8°C | 47 | 6.6 | 9.710 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
- Isesaki in DecemberJapan · 9 kmHigh 9.1°C · Low 0.4°C · 47 mm rain
- Ōta, Japan in DecemberJapan · 17 kmHigh 9.6°C · Low 0.6°C · 47 mm rain
- Takasaki in DecemberJapan · 19 kmHigh 9.5°C · Low 0.2°C · 61 mm rain
- Maebashi in DecemberJapan · 20 kmHigh 9.3°C · Low 0.4°C · 59 mm rain
- Kumagaya in DecemberJapan · 21 kmHigh 10.2°C · Low 1.2°C · 51 mm rain
- Kiryū in DecemberJapan · 22 kmHigh 9.4°C · Low 0.6°C · 45 mm rain
- Tatebayashi in DecemberJapan · 31 kmHigh 9.8°C · Low 0.7°C · 51 mm rain
- Shibukawa in DecemberJapan · 32 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 Honjō) is explained once on the Honjō year overview and on the Sources, method and limits page.
Ōta, Japan and Isesaki lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.