Maebashi climate

Name: Maebashi
Address: JP

Maebashi is warmest in August, with average highs of 29 °C, and coldest in January, when nights average -2.0 °C. July is the wettest month (216 mm) and December the driest (56 mm). Figures are 1991–2020 climate normals.

Across a full year Maebashi averages 1,577 mm of rain, 83 days above 25 °C and 69 days below freezing.

Japan · population 332,149 · 1991–2020 normals

Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month

Warmest month August 29 °C
Coldest month January -2.0 °C
Driest month December 56 mm
Wettest month July 216 mm
Least cloud December 51 % cloud
Hottest on record July 39 °C
Coldest on record January -15 °C

What to expectMaebashi through the year

Maebashi has a clear annual cycle: average daily highs run from 6.7 °C in January to 29 °C in August, a swing of 23 °C in mean temperature across the year.

Counted across a normal year, 83 days a year reach 25 °C, 22 of them reach 30 °C, 69 nights drop below freezing. The warmest reading in the 1991–2020 record is 39 °C, in July.

Rain is strongly seasonal. July averages 216 mm against 56 mm in December — 3.9 times as much. Planning around the dry months matters more here than planning around temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	6.7 °C	65 mm	55 %
February	7.6 °C	68 mm	57 %
March	11.4 °C	114 mm	59 %
April	17.0 °C	120 mm	61 %
May	21.6 °C	139 mm	68 %
June	24.2 °C	183 mm	80 %
July	27.6 °C	216 mm	78 %
August	28.6 °C	161 mm	71 %
September	24.7 °C	207 mm	71 %
October	19.4 °C	176 mm	63 %
November	14.4 °C	71 mm	53 %
December	9.4 °C	56 mm	51 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C	Days below 0 °C
January	6.7 °C	-2.0 °C	1.8 °C	17.0 °C	-15.3 °C	0	0	24
February	7.6 °C	-1.6 °C	2.5 °C	20.5 °C	-14.4 °C	0	0	20
March	11.4 °C	1.6 °C	6.1 °C	23.2 °C	-9.4 °C	0	0	11
April	17.0 °C	6.8 °C	11.7 °C	28.6 °C	-6.6 °C	1	0	1
May	21.6 °C	12.1 °C	16.7 °C	34.9 °C	2.4 °C	5	0	0
June	24.2 °C	16.7 °C	20.3 °C	33.7 °C	8.2 °C	11	2	0
July	27.6 °C	20.6 °C	23.9 °C	38.8 °C	13.9 °C	23	8	0
August	28.6 °C	21.6 °C	24.9 °C	38.1 °C	14.7 °C	27	11	0
September	24.7 °C	18.2 °C	21.2 °C	34.6 °C	7.8 °C	14	1	0
October	19.4 °C	12.1 °C	15.5 °C	30.0 °C	1.6 °C	1	0	0
November	14.4 °C	5.7 °C	9.7 °C	24.2 °C	-2.1 °C	0	0	1
December	9.4 °C	0.7 °C	4.5 °C	21.0 °C	-10.3 °C	0	0	14

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	65 mm	9	10.0 h/day	55 %	65 %	15 km/h
February	68 mm	10	11 h/day	57 %	65 %	16 km/h
March	114 mm	13	12 h/day	59 %	67 %	16 km/h
April	120 mm	13	13 h/day	61 %	69 %	15 km/h
May	139 mm	14	14 h/day	68 %	72 %	12 km/h
June	183 mm	18	15 h/day	80 %	79 %	10 km/h
July	216 mm	19	14 h/day	78 %	83 %	9.0 km/h
August	161 mm	17	14 h/day	71 %	81 %	9.0 km/h
September	207 mm	17	12 h/day	71 %	81 %	10 km/h
October	176 mm	14	11 h/day	63 %	78 %	11 km/h
November	71 mm	9	10 h/day	53 %	74 %	12 km/h
December	56 mm	9	9.7 h/day	51 %	68 %	14 km/h

How Maebashi compares

The same four figures for nearby destinations, so the numbers above have something to be read against. Summer high is the warmest month's average high; winter low is the coldest month's average low.

Destination	Summer high	Winter low	Rain per year	Days above 25 °C
Maebashi	29 °C	-2.0 °C	1,577 mm	83
Takasaki · Japan	28 °C	-2.4 °C	1,936 mm	78
Isesaki · Japan	29 °C	-1.9 °C	1,476 mm	83
Ōta · Japan	30 °C	-1.6 °C	1,478 mm	93
Kumagaya · Japan	30 °C	-1.3 °C	1,619 mm	98
Tochigi · Japan	29 °C	-1.9 °C	1,777 mm	93

Planning a trip? See the best time to visit Maebashi.

QuestionsCommon questions about Maebashi’s climate

When is the best time to visit Maebashi?

That depends on what you want, so the honest answer is a comparison rather than a single month. May, June, September sit closest to 20 °C on average, August is the warmest month and December the driest. The month-by-month table above has the full picture.

How hot does Maebashi get?

In August, the warmest month, daily highs average 29 °C. About 22 days a year pass 30 °C. The highest value in the 1991–2020 record is 39 °C.

How cold does it get in winter?

Nights average -2.0 °C in January, the coldest month. A normal year has 69 nights below freezing.

Which month is wettest in Maebashi?

July, averaging 216 mm over 19 days with rain. The driest month is December with 56 mm. The year as a whole averages 1,577 mm.

Are these figures a forecast?

No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Maebashi rather than what any particular week will bring. Individual years can differ substantially from the normal.

Data sources and method

ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
Open-Meteo — Open-Meteo.com. CC BY 4.0
NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
GeoNames — GeoNames.org. CC BY 4.0

Normal period: 1991–2020
Data point: 36.400°, 139.083° (the coordinates the reanalysis values are taken for)
Dataset version: era5-1991-2020-scores1.1
Last processed: 1 August 2026

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.