Climate averages 1991–2020

Daisen weather
in January.

A cold month with heavy precipitation: the coolest and the 2nd driest of the year.

Long-term climate patterns, not a forecast for a particular trip.

Average high 0.8°C Daytime mean, January

Average low -5.9°C Night-time mean, January

Precipitation 111 mm 21 days with ≥1 mm

Daylight 10 h Sunrise to sunset, per day

January is a cold month in Daisen: daytime highs average 0.8°C and nights cool to about -5.9°C. By daytime temperature it is the coolest month of the year.

Expect about 111 mm of precipitation on roughly 21 days, which makes January a month with heavy precipitation (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 9 h 44 min on an average January day.

The nearest other city in this atlas is Yokote (15 km away). In January its highs average 0.7°C, about as warm as Daisen, with 118 mm of precipitation.

Among the 303 cities listed in Japan, Daisen ranks joint 284th of 303 for the warmest January highs and 275th of 303 for the driest January (precipitation, lowest first). The mean January high of those 303 cities is 7.0°C; Daisen is 6.2°C cooler than that mean.

From January to February, average highs rise by 1.0°C to 1.8°C, and monthly precipitation falls from 111 mm to 91 mm.

The annual picture

January in context

30-year average

Average highAverage low°C

Monthly precipitation

Average total · mm

Averages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated

Every month, side by side

Daisen climate table

1991–2020

Monthly climate averages for Daisen, 1991–2020
Month	Average highHigh / low	Average low	Precipitation mm/month	Wet days ≥1 mm/day	Daylight hours/dayDaylight h/day
January, selected	0.8°C-5.9°C	-5.9°C	111	21.1	9.710 h
February	1.8°C-5.6°C	-5.6°C	91	17.2	10.711 h
March	5.7°C-2.2°C	-2.2°C	115	17.9	11.912 h
April	13.2°C2.9°C	2.9°C	112	15.1	13.213 h
May	19.2°C8.9°C	8.9°C	121	13.5	14.314 h
June	23.0°C14.1°C	14.1°C	131	12.8	14.915 h
July	25.9°C18.7°C	18.7°C	206	17.0	14.715 h
August	27.2°C20.0°C	20.0°C	173	16.2	13.714 h
September	23.3°C15.8°C	15.8°C	152	14.2	12.512 h
October	17.2°C9.0°C	9.0°C	141	14.1	11.211 h
November	10.5°C2.9°C	2.9°C	129	17.6	10.110 h
December	3.7°C-2.7°C	-2.7°C	130	21.0	9.49 h

Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet 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

Distance from Daisen

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 limits

How these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Daisen) is explained once on the Daisen year overview and on the Sources, method and limits page.