Hirosaki climate

Name: Hirosaki
Address: JP

Hirosaki is warmest in August, with average highs of 27 °C, and coldest in January, when nights average -6.3 °C. August is the wettest month (178 mm) and February the driest (82 mm). Figures are 1991–2020 climate normals.

Across a full year Hirosaki averages 1,416 mm of rain, 59 days above 25 °C and 124 days below freezing.

Japan · population 168,739 · 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 27 °C
Coldest month January -6.3 °C
Driest month February 82 mm
Wettest month August 178 mm
Least cloud April 64 % cloud
Hottest on record August 37 °C
Coldest on record January -16 °C

What to expectHirosaki through the year

Hirosaki has a clear annual cycle: average daily highs run from -0.3 °C in January to 27 °C in August, a swing of 26 °C in mean temperature across the year.

Counted across a normal year, 59 days a year reach 25 °C, 8 of them reach 30 °C, 124 nights drop below freezing. The warmest reading in the 1991–2020 record is 37 °C, in August.

Rain is strongly seasonal. August averages 178 mm against 82 mm in February — 2.2 times as much. Planning around the dry months matters more here than planning around temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	-0.3 °C	84 mm	73 %
February	0.7 °C	82 mm	72 %
March	4.6 °C	100 mm	68 %
April	12.1 °C	96 mm	64 %
May	18.8 °C	102 mm	68 %
June	22.8 °C	107 mm	75 %
July	25.8 °C	164 mm	79 %
August	26.8 °C	178 mm	74 %
September	22.8 °C	153 mm	71 %
October	16.5 °C	127 mm	65 %
November	9.3 °C	113 mm	67 %
December	2.3 °C	111 mm	72 %

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	-0.3 °C	-6.3 °C	-3.3 °C	7.1 °C	-15.9 °C	0	0	31
February	0.7 °C	-5.5 °C	-2.6 °C	11.3 °C	-14.3 °C	0	0	27
March	4.6 °C	-2.8 °C	0.6 °C	19.6 °C	-11.6 °C	0	0	25
April	12.1 °C	2.6 °C	7.0 °C	26.5 °C	-5.4 °C	0	0	8
May	18.8 °C	8.9 °C	13.6 °C	31.8 °C	-0.1 °C	2	0	0
June	22.8 °C	13.8 °C	18.1 °C	32.3 °C	5.9 °C	8	0	0
July	25.8 °C	18.4 °C	21.7 °C	34.8 °C	10.0 °C	19	2	0
August	26.8 °C	19.4 °C	22.7 °C	36.6 °C	9.0 °C	22	5	0
September	22.8 °C	15.1 °C	18.6 °C	33.6 °C	5.4 °C	7	1	0
October	16.5 °C	8.6 °C	12.1 °C	25.8 °C	0.0 °C	0	0	0
November	9.3 °C	2.4 °C	5.5 °C	22.4 °C	-11.4 °C	0	0	7
December	2.3 °C	-3.8 °C	-0.8 °C	16.5 °C	-15.1 °C	0	0	27

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	84 mm	17	9.6 h/day	73 %	82 %	16 km/h
February	82 mm	16	11 h/day	72 %	81 %	17 km/h
March	100 mm	16	12 h/day	68 %	80 %	17 km/h
April	96 mm	14	13 h/day	64 %	77 %	17 km/h
May	102 mm	13	14 h/day	68 %	78 %	15 km/h
June	107 mm	13	15 h/day	75 %	82 %	12 km/h
July	164 mm	17	15 h/day	79 %	87 %	12 km/h
August	178 mm	16	14 h/day	74 %	86 %	11 km/h
September	153 mm	14	12 h/day	71 %	85 %	12 km/h
October	127 mm	14	11 h/day	65 %	82 %	14 km/h
November	113 mm	16	9.9 h/day	67 %	81 %	15 km/h
December	111 mm	19	9.3 h/day	72 %	82 %	16 km/h

How Hirosaki 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
Hirosaki	27 °C	-6.3 °C	1,416 mm	59
Aomori · Japan	27 °C	-5.7 °C	1,300 mm	54
Hachinohe · Japan	26 °C	-5.1 °C	1,050 mm	49
Akita · Japan	27 °C	-2.3 °C	1,869 mm	47
Morioka · Japan	26 °C	-7.5 °C	1,219 mm	52
Hakodate · Japan	24 °C	-5.4 °C	1,176 mm	17

Where Hirosaki ranks

Ranking	Position	Value
The coolest places in Asia in April	31stof 50	12 °C
The coolest places in Asia in May	38thof 50	19 °C
The coolest places in Asia in March	44thof 50	4.6 °C
The coolest places in Asia in June	47thof 50	23 °C

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

QuestionsCommon questions about Hirosaki’s climate

When is the best time to visit Hirosaki?

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

How hot does Hirosaki get?

In August, the warmest month, daily highs average 27 °C. About 8 days a year pass 30 °C. The highest value in the 1991–2020 record is 37 °C.

How cold does it get in winter?

Nights average -6.3 °C in January, the coldest month. A normal year has 124 nights below freezing.

Which month is wettest in Hirosaki?

August, averaging 178 mm over 16 days with rain. The driest month is February with 82 mm. The year as a whole averages 1,416 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 Hirosaki 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
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.