Climate averages 1991–2020
Katsushika weather
in January.
A cool, moderately wet month: the coolest and the 3rd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a cool month in Katsushika: daytime highs average 8.4°C and nights cool to about 0.2°C. By daytime temperature it is the coolest month of the year.
Expect about 66 mm of rain on roughly 7 days, which makes January a moderately wet month (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 02 min on an average January day.
The nearest other city in this atlas is Matsudo (7 km away). In January its highs average 8.4°C, about as warm as Katsushika, with 69 mm of rain.
Among the 303 cities listed in Japan, Katsushika ranks joint 90th of 303 for the warmest January highs and joint 145th of 303 for the driest January (rainfall, lowest first). The mean January high of those 303 cities is 7.0°C; Katsushika is 1.5°C warmer than that mean.
From January to February, average highs rise by 0.9°C to 9.3°C, and monthly rainfall falls from 66 mm to 63 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
Katsushika climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 8.4°C0.2°C | 0.2°C | 66 | 6.9 | 10.010 h |
| February | 9.3°C0.7°C | 0.7°C | 63 | 7.6 | 10.911 h |
| March | 12.6°C4.1°C | 4.1°C | 113 | 11.6 | 11.912 h |
| April | 17.4°C9.1°C | 9.1°C | 113 | 11.4 | 13.113 h |
| May | 21.8°C14.3°C | 14.3°C | 129 | 11.8 | 14.014 h |
| June | 24.6°C18.3°C | 18.3°C | 159 | 13.6 | 14.515 h |
| July | 28.3°C22.3°C | 22.3°C | 149 | 12.9 | 14.314 h |
| August | 29.8°C23.7°C | 23.7°C | 110 | 10.8 | 13.514 h |
| September | 26.2°C20.4°C | 20.4°C | 180 | 13.6 | 12.412 h |
| October | 20.8°C14.6°C | 14.6°C | 209 | 12.9 | 11.311 h |
| November | 15.7°C8.7°C | 8.7°C | 91 | 9.8 | 10.310 h |
| December | 10.8°C3.2°C | 3.2°C | 59 | 7.4 | 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
January in nearby cities
- Matsudo in JanuaryJapan · 7 kmHigh 8.4°C · Low -0.4°C · 69 mm rain
- Urayasu in JanuaryJapan · 9 kmHigh 8.4°C · Low 0.6°C · 69 mm rain
- Sōka in JanuaryJapan · 12 kmHigh 8.3°C · Low -0.9°C · 66 mm rain
- Kamagaya in JanuaryJapan · 14 kmHigh 8.2°C · Low -0.1°C · 69 mm rain
- Nagareyama in JanuaryJapan · 14 kmHigh 8.2°C · Low -1.1°C · 69 mm rain
- Kawaguchi in JanuaryJapan · 15 kmHigh 8.2°C · Low -1.2°C · 66 mm rain
- Tokyo in JanuaryJapan · 15 kmHigh 8.1°C · Low -0.4°C · 66 mm rain
- Narashino in JanuaryJapan · 18 kmHigh 8.4°C · Low 0.9°C · 69 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 Katsushika) is explained once on the Katsushika year overview and on the Sources, method and limits page.
Tokyo, Kawaguchi and Sōka lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.