Anjō climate

Name: Anjō
Address: JP

Anjō is warmest in August, with average highs of 31 °C, and coldest in January, when nights average -0.08 °C. September is the wettest month (204 mm) and January the driest (54 mm). Figures are 1991–2020 climate normals.

Across a full year Anjō averages 1,493 mm of rain, 111 days above 25 °C and 47 days below freezing.

Japan · population 188,693 · 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 31 °C
Coldest month January -0.08 °C
Driest month January 54 mm
Wettest month September 204 mm
Least cloud December 38 % cloud
Hottest on record August 38 °C
Coldest on record December -6.4 °C
Warmest sea August 27 °C

What to expectAnjō through the year

Anjō has a clear annual cycle: average daily highs run from 8.7 °C in January to 31 °C in August, a swing of 23 °C in mean temperature across the year.

Counted across a normal year, 111 days a year reach 25 °C, 35 of them reach 30 °C, 47 nights drop below freezing. The warmest reading in the 1991–2020 record is 38 °C, in August.

Rain is strongly seasonal. September averages 204 mm against 54 mm in January — 3.8 times as much. Planning around the dry months matters more here than planning around temperature.

The sea off Anjō is warmest in August at 27 °C and coldest in February at 13 °C. Sea temperature lags the air by a month or two, which is why late summer swims warmer than early summer at the same air temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	8.7 °C	54 mm	40 %
February	9.8 °C	64 mm	46 %
March	13.4 °C	107 mm	51 %
April	18.3 °C	118 mm	56 %
May	22.7 °C	138 mm	64 %
June	25.7 °C	187 mm	77 %
July	29.0 °C	182 mm	71 %
August	30.5 °C	112 mm	59 %
September	27.2 °C	204 mm	60 %
October	21.7 °C	184 mm	52 %
November	16.2 °C	86 mm	44 %
December	11.0 °C	57 mm	38 %

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	8.7 °C	-0.1 °C	3.9 °C	17.2 °C	-5.5 °C	0	0	17
February	9.8 °C	0.5 °C	4.7 °C	18.9 °C	-6.2 °C	0	0	15
March	13.4 °C	3.5 °C	8.2 °C	22.7 °C	-4.1 °C	0	0	6
April	18.3 °C	8.6 °C	13.3 °C	27.8 °C	-1.3 °C	0	0	0
May	22.7 °C	13.6 °C	18.0 °C	33.4 °C	3.7 °C	6	0	0
June	25.7 °C	18.3 °C	21.8 °C	34.5 °C	10.8 °C	18	1	0
July	29.0 °C	22.5 °C	25.5 °C	36.6 °C	16.0 °C	29	11	0
August	30.5 °C	23.5 °C	26.7 °C	38.0 °C	16.4 °C	30	18	0
September	27.2 °C	19.9 °C	23.2 °C	35.4 °C	9.8 °C	24	4	0
October	21.7 °C	13.8 °C	17.4 °C	30.2 °C	3.3 °C	4	0	0
November	16.2 °C	7.6 °C	11.6 °C	25.6 °C	-0.5 °C	0	0	0
December	11.0 °C	2.2 °C	6.2 °C	21.5 °C	-6.4 °C	0	0	8

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind	Sea temp
January	54 mm	6	10 h/day	40 %	71 %	23 km/h	14.2 °C
February	64 mm	7	11 h/day	46 %	69 %	23 km/h	13.4 °C
March	107 mm	10	12 h/day	51 %	69 %	24 km/h	13.7 °C
April	118 mm	10	13 h/day	56 %	71 %	23 km/h	15.4 °C
May	138 mm	10	14 h/day	64 %	75 %	21 km/h	18.4 °C
June	187 mm	14	15 h/day	77 %	81 %	18 km/h	21.8 °C
July	182 mm	14	14 h/day	71 %	84 %	17 km/h	25.4 °C
August	112 mm	12	13 h/day	59 %	80 %	18 km/h	27.3 °C
September	204 mm	12	12 h/day	60 %	80 %	18 km/h	25.7 °C
October	184 mm	10	11 h/day	52 %	79 %	17 km/h	22.4 °C
November	86 mm	7	10 h/day	44 %	77 %	19 km/h	19.4 °C
December	57 mm	6	9.8 h/day	38 %	74 %	21 km/h	16.6 °C

How Anjō 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
Anjō	31 °C	-0.08 °C	1,493 mm	111
Nishio · Japan	30 °C	1.4 °C	1,497 mm	102
Toyota · Japan	31 °C	0.03 °C	1,878 mm	115
Nagoya · Japan	31 °C	-0.6 °C	1,519 mm	113
Toyohashi · Japan	30 °C	1.6 °C	1,881 mm	106

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

QuestionsCommon questions about Anjō’s climate

When is the best time to visit Anjō?

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

How hot does Anjō get?

In August, the warmest month, daily highs average 31 °C. About 35 days a year pass 30 °C. The highest value in the 1991–2020 record is 38 °C.

How cold does it get in winter?

Nights average -0.08 °C in January, the coldest month. A normal year has 47 nights below freezing.

Which month is wettest in Anjō?

September, averaging 204 mm over 12 days with rain. The driest month is January with 54 mm. The year as a whole averages 1,493 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 Anjō 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: 34.958°, 137.081° (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.