Climate averages 1991–2020

Niigata weather
in January.

A cold, wet month: the coolest and the 10th driest of the year.

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

Average high 4.2°C Daytime mean, January

Average low 0.0°C Night-time mean, January

Rainfall 178 mm 27 days with ≥1 mm

Daylight 10 h Sunrise to sunset, per day

January is a cold month in Niigata: daytime highs average 4.2°C and nights cool to about 0.0°C. By daytime temperature it is the coolest month of the year.

Expect about 178 mm of rain on roughly 27 days, which makes January a wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 9 h 51 min on an average January day.

The nearest other city in this atlas is Shibata (26 km away). In January its highs average 3.1°C, 1.1°C cooler than Niigata, with 217 mm of rain.

Among the 303 cities listed in Japan, Niigata ranks 251st of 303 for the warmest January highs and 286th of 303 for the driest January (rainfall, lowest first). The mean January high of those 303 cities is 7.0°C; Niigata is 2.7°C cooler than that mean.

From January to February, average highs rise by 0.5°C to 4.7°C, and monthly rainfall falls from 178 mm to 115 mm.

The annual picture

January in context

30-year average

Average highAverage low°C

Monthly rainfall

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

Niigata climate table

1991–2020

Monthly climate averages for Niigata, 1991–2020
Month	Average highHigh / low	Average low	Rainfall mm/month	Rain days ≥1 mm/day	Daylight hours/dayDaylight h/day
January, selected	4.2°C0.0°C	0.0°C	178	26.6	9.910 h
February	4.7°C-0.6°C	-0.6°C	115	21.3	10.811 h
March	8.6°C1.8°C	1.8°C	110	18.6	11.912 h
April	14.1°C6.0°C	6.0°C	90	12.6	13.213 h
May	19.4°C11.4°C	11.4°C	99	11.8	14.214 h
June	23.1°C16.5°C	16.5°C	123	11.2	14.715 h
July	26.6°C21.2°C	21.2°C	226	15.2	14.515 h
August	28.3°C22.7°C	22.7°C	159	12.9	13.614 h
September	24.7°C19.2°C	19.2°C	146	14.2	12.512 h
October	19.1°C13.1°C	13.1°C	155	15.8	11.211 h
November	13.2°C7.5°C	7.5°C	164	19.7	10.210 h
December	7.5°C2.7°C	2.7°C	195	25.4	9.610 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

Distance from Niigata

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 Niigata) is explained once on the Niigata year overview and on the Sources, method and limits page.