Climate averages 1991–2020
Ōsaki weather
in January.
A cold, moderately wet month: the coolest and the 2nd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a cold month in Ōsaki: daytime highs average 3.6°C and nights cool to about -4.2°C. By daytime temperature it is the coolest month of the year.
Expect about 56 mm of rain on roughly 9 days, which makes January a moderately wet month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 9 h 48 min on an average January day.
The nearest other city in this atlas is Tome (21 km away). In January its highs average 3.7°C, about as warm as Ōsaki, with 47 mm of rain.
Among the 303 cities listed in Japan, Ōsaki ranks 263rd of 303 for the warmest January highs and joint 62nd of 303 for the driest January (rainfall, lowest first). The mean January high of those 303 cities is 7.0°C; Ōsaki is 3.4°C cooler than that mean.
From January to February, average highs rise by 0.9°C to 4.5°C, and monthly rainfall falls from 56 mm to 48 mm.
The annual picture
January 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
Ōsaki climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 3.6°C-4.2°C | -4.2°C | 56 | 9.2 | 9.810 h |
| February | 4.5°C-4.2°C | -4.2°C | 48 | 8.2 | 10.711 h |
| March | 8.6°C-1.3°C | -1.3°C | 89 | 11.0 | 11.912 h |
| April | 14.6°C3.9°C | 3.9°C | 97 | 11.4 | 13.213 h |
| May | 19.6°C9.8°C | 9.8°C | 109 | 11.4 | 14.314 h |
| June | 22.6°C14.6°C | 14.6°C | 132 | 12.8 | 14.815 h |
| July | 25.8°C19.0°C | 19.0°C | 188 | 16.7 | 14.615 h |
| August | 27.2°C20.4°C | 20.4°C | 165 | 15.5 | 13.714 h |
| September | 23.6°C16.7°C | 16.7°C | 168 | 14.0 | 12.512 h |
| October | 18.2°C9.9°C | 9.9°C | 141 | 10.7 | 11.211 h |
| November | 12.2°C3.4°C | 3.4°C | 65 | 8.5 | 10.110 h |
| December | 6.2°C-1.5°C | -1.5°C | 58 | 9.6 | 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
January in nearby cities
- Tome in JanuaryJapan · 21 kmHigh 3.7°C · Low -3.4°C · 47 mm rain
- Ishinomaki in JanuaryJapan · 34 kmHigh 4.7°C · Low 0.0°C · 52 mm rain
- Sendai in JanuaryJapan · 37 kmHigh 4.1°C · Low -2.6°C · 63 mm rain
- Ichinoseki in JanuaryJapan · 39 kmHigh 2.6°C · Low -5.2°C · 51 mm rain
- Natori-shi in JanuaryJapan · 48 kmHigh 4.8°C · Low -1.0°C · 56 mm rain
- Ōshū in JanuaryJapan · 64 kmHigh 2.0°C · Low -5.5°C · 59 mm rain
- Yamagata in JanuaryJapan · 66 kmHigh 0.8°C · Low -6.4°C · 126 mm precipitation
- Kitakami in JanuaryJapan · 78 kmHigh 0.9°C · Low -6.9°C · 73 mm precipitation
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 Ōsaki) is explained once on the Ōsaki year overview and on the Sources, method and limits page.