Asahikawa climate

Name: Asahikawa
Address: JP

Asahikawa is warmest in August, with average highs of 24 °C, and coldest in January, when nights average -12 °C. August is the wettest month (167 mm) and February the driest (53 mm). Figures are 1991–2020 climate normals.

Across a full year Asahikawa averages 1,212 mm of rain, 30 days above 25 °C and 160 days below freezing.

Japan · population 333,530 · 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 24 °C
Coldest month January -12 °C
Driest month February 53 mm
Wettest month August 167 mm
Least cloud October 62 % cloud
Hottest on record July 33 °C
Coldest on record February -23 °C

What to expectAsahikawa through the year

Asahikawa has a clear annual cycle: average daily highs run from -5.0 °C in January to 24 °C in August, a swing of 29 °C in mean temperature across the year.

Counted across a normal year, 30 days a year reach 25 °C, 1 of them reach 30 °C, 160 nights drop below freezing. The warmest reading in the 1991–2020 record is 33 °C, in July.

Rain is strongly seasonal. August averages 167 mm against 53 mm in February — 3.2 times as much. Planning around the dry months matters more here than planning around temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	-5.0 °C	59 mm	76 %
February	-3.8 °C	53 mm	74 %
March	0.8 °C	67 mm	67 %
April	8.0 °C	77 mm	64 %
May	16.1 °C	92 mm	68 %
June	20.6 °C	92 mm	72 %
July	24.1 °C	151 mm	76 %
August	24.3 °C	167 mm	74 %
September	20.0 °C	146 mm	67 %
October	13.1 °C	116 mm	62 %
November	4.6 °C	108 mm	69 %
December	-2.8 °C	85 mm	75 %

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	-5.0 °C	-11.9 °C	-8.5 °C	4.8 °C	-22.9 °C	0	0	31
February	-3.8 °C	-10.9 °C	-7.4 °C	8.9 °C	-23.1 °C	0	0	28
March	0.8 °C	-6.5 °C	-3.0 °C	14.3 °C	-19.5 °C	0	0	30
April	8.0 °C	-0.4 °C	3.5 °C	23.3 °C	-9.0 °C	0	0	17
May	16.1 °C	6.3 °C	11.1 °C	30.8 °C	-3.9 °C	1	0	1
June	20.6 °C	11.8 °C	16.1 °C	30.9 °C	2.5 °C	3	0	0
July	24.1 °C	16.4 °C	20.1 °C	32.7 °C	7.3 °C	12	0	0
August	24.3 °C	16.9 °C	20.4 °C	31.7 °C	7.3 °C	12	1	0
September	20.0 °C	12.1 °C	15.8 °C	30.8 °C	1.1 °C	2	0	0
October	13.1 °C	5.1 °C	8.8 °C	25.5 °C	-6.7 °C	0	0	2
November	4.6 °C	-2.3 °C	1.0 °C	17.5 °C	-16.4 °C	0	0	20
December	-2.8 °C	-9.7 °C	-6.2 °C	12.4 °C	-21.7 °C	0	0	31

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	59 mm	15	9.3 h/day	76 %	80 %	14 km/h
February	53 mm	13	10 h/day	74 %	78 %	15 km/h
March	67 mm	15	12 h/day	67 %	77 %	17 km/h
April	77 mm	13	13 h/day	64 %	75 %	16 km/h
May	92 mm	13	15 h/day	68 %	73 %	15 km/h
June	92 mm	12	15 h/day	72 %	78 %	12 km/h
July	151 mm	14	15 h/day	76 %	81 %	11 km/h
August	167 mm	15	14 h/day	74 %	82 %	11 km/h
September	146 mm	14	13 h/day	67 %	80 %	13 km/h
October	116 mm	16	11 h/day	62 %	79 %	16 km/h
November	108 mm	18	9.7 h/day	69 %	81 %	16 km/h
December	85 mm	18	8.9 h/day	75 %	82 %	15 km/h

How Asahikawa 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
Asahikawa	24 °C	-12 °C	1,212 mm	30
Sapporo · Japan	24 °C	-9.4 °C	1,162 mm	25
Obihiro · Japan	24 °C	-14 °C	1,158 mm	30
Tomakomai · Japan	23 °C	-7.6 °C	1,215 mm	7
Kushiro · Japan	20 °C	-8.8 °C	1,133 mm	1
Hakodate · Japan	24 °C	-5.4 °C	1,176 mm	17
Aomori · Japan	27 °C	-5.7 °C	1,300 mm	54

Where Asahikawa ranks

Ranking	Position	Value
The coolest places in Asia in April	5th of 50	8.0 °C
The coolest places in Asia in May	11th of 50	16 °C
The coolest places in Asia in June	14th of 50	21 °C
The coolest places in Asia in March	16th of 50	0.8 °C
The coolest places in Asia year-round	29th of 50	10.0 °C
The coolest places in Asia in February	34th of 50	-3.8 °C

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

QuestionsCommon questions about Asahikawa’s climate

When is the best time to visit Asahikawa?

That depends on what you want, so the honest answer is a comparison rather than a single month. June, July, August 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 Asahikawa get?

In August, the warmest month, daily highs average 24 °C. About 1 days a year pass 30 °C. The highest value in the 1991–2020 record is 33 °C.

How cold does it get in winter?

Nights average -12 °C in January, the coldest month. A normal year has 160 nights below freezing.

Which month is wettest in Asahikawa?

August, averaging 167 mm over 15 days with rain. The driest month is February with 53 mm. The year as a whole averages 1,212 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 Asahikawa 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: 43.771°, 142.365° (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.