Climate averages 1991–2020
Sendai, Japan weather
in January.
A cool, wet month: the coolest and the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a cool month in Sendai, Japan: daytime highs average 11.1°C and nights cool to about 6.8°C. By daytime temperature it is the coolest month of the year.
Expect about 98 mm of rain on roughly 12 days, which makes January a wet month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 10 h 19 min on an average January day.
The nearest other city in this atlas is Aira (28 km away). In January its highs average 10.5°C, 0.6°C cooler than Sendai, Japan, with 81 mm of rain.
Among the 303 cities listed in Japan, Sendai, Japan ranks 8th of 303 for the warmest January highs and joint 263rd of 303 for the driest January (rainfall, lowest first). The mean January high of those 303 cities is 7.0°C; Sendai, Japan is 4.1°C warmer than that mean.
From January to February, average highs rise by 0.9°C to 12.0°C, and monthly rainfall rises from 98 mm to 115 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
Sendai, Japan climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 11.1°C6.8°C | 6.8°C | 98 | 12.3 | 10.310 h |
| February | 12.0°C7.0°C | 7.0°C | 115 | 11.3 | 11.011 h |
| March | 15.0°C9.2°C | 9.2°C | 161 | 13.4 | 12.012 h |
| April | 19.1°C12.8°C | 12.8°C | 186 | 11.7 | 12.913 h |
| May | 23.0°C16.9°C | 16.9°C | 205 | 11.3 | 13.814 h |
| June | 25.6°C20.8°C | 20.8°C | 500 | 18.5 | 14.214 h |
| July | 29.1°C24.6°C | 24.6°C | 324 | 17.6 | 14.014 h |
| August | 30.1°C25.5°C | 25.5°C | 166 | 15.7 | 13.313 h |
| September | 27.9°C23.1°C | 23.1°C | 198 | 13.1 | 12.412 h |
| October | 23.6°C18.5°C | 18.5°C | 109 | 8.6 | 11.411 h |
| November | 18.4°C13.6°C | 13.6°C | 122 | 9.3 | 10.611 h |
| December | 13.3°C8.9°C | 8.9°C | 102 | 10.6 | 10.110 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
- Aira in JanuaryJapan · 28 kmHigh 10.5°C · Low 3.8°C · 81 mm rain
- Kagoshima in JanuaryJapan · 37 kmHigh 11.3°C · Low 5.9°C · 82 mm rain
- Kirishima in JanuaryJapan · 45 kmHigh 11.2°C · Low 3.1°C · 80 mm rain
- Kanoya in JanuaryJapan · 71 kmHigh 11.6°C · Low 5.0°C · 81 mm rain
- Amakusa in JanuaryJapan · 72 kmHigh 10.3°C · Low 5.4°C · 68 mm rain
- Miyakonojō in JanuaryJapan · 73 kmHigh 11.0°C · Low 2.9°C · 81 mm rain
- Honmachi in JanuaryJapan · 82 kmHigh 9.6°C · Low 3.2°C · 73 mm rain
- Miyazaki in JanuaryJapan · 106 kmHigh 11.6°C · Low 5.3°C · 78 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 Sendai) is explained once on the Sendai, Japan year overview and on the Sources, method and limits page.