Climate averages 1991–2020
Ishinomaki weather
in December.
A cold, moderately 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 Ishinomaki: daytime highs average 7.5°C and nights cool to about 2.6°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 56 mm of rain on roughly 9 days, which makes December a moderately wet month (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 9 h 33 min on an average December day.
The nearest other city in this atlas is Ōsaki (34 km away). In December its highs average 6.2°C, 1.2°C cooler than Ishinomaki, with 58 mm of rain.
Among the 303 cities listed in Japan, Ishinomaki ranks joint 249th of 303 for the warmest December highs and joint 47th of 303 for the driest December (rainfall, lowest first). The mean December high of those 303 cities is 9.5°C; Ishinomaki is 2.0°C cooler than that mean.
From December to January, average highs fall by 2.8°C to 4.7°C, and monthly rainfall falls from 56 mm to 52 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
Ishinomaki climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 4.7°C0.0°C | 0.0°C | 52 | 7.7 | 9.810 h |
| February | 5.2°C-0.2°C | -0.2°C | 43 | 7.0 | 10.711 h |
| March | 8.1°C2.1°C | 2.1°C | 85 | 10.2 | 11.912 h |
| April | 12.7°C6.6°C | 6.6°C | 91 | 10.8 | 13.213 h |
| May | 17.0°C11.5°C | 11.5°C | 100 | 10.2 | 14.214 h |
| June | 20.2°C15.7°C | 15.7°C | 115 | 10.8 | 14.815 h |
| July | 23.7°C19.8°C | 19.8°C | 162 | 14.7 | 14.615 h |
| August | 25.6°C21.8°C | 21.8°C | 131 | 12.3 | 13.714 h |
| September | 23.1°C19.2°C | 19.2°C | 151 | 12.6 | 12.512 h |
| October | 18.2°C13.6°C | 13.6°C | 140 | 9.9 | 11.211 h |
| November | 12.9°C7.6°C | 7.6°C | 64 | 7.7 | 10.110 h |
| December, selected | 7.5°C2.6°C | 2.6°C | 56 | 8.8 | 9.510 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
- Ōsaki in DecemberJapan · 34 kmHigh 6.2°C · Low -1.5°C · 58 mm rain
- Tome in DecemberJapan · 35 kmHigh 6.3°C · Low -0.9°C · 52 mm rain
- Sendai in DecemberJapan · 41 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
- Ichinoseki in DecemberJapan · 57 kmHigh 5.3°C · Low -1.9°C · 58 mm rain
- Ōshū in DecemberJapan · 81 kmHigh 4.9°C · Low -1.9°C · 68 mm rain
- Yamagata in DecemberJapan · 84 kmHigh 3.9°C · Low -3.0°C · 120 mm rain
- Kitakami in DecemberJapan · 98 kmHigh 3.7°C · Low -3.0°C · 86 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 Ishinomaki) is explained once on the Ishinomaki year overview and on the Sources, method and limits page.