Toyama climate

Name: Toyama
Address: JP

Toyama is warmest in August, with average highs of 29 °C, and coldest in January, when nights average -2.6 °C. July is the wettest month (270 mm) and April the driest (149 mm). Figures are 1991–2020 climate normals.

Across a full year Toyama averages 2,254 mm of rain, 79 days above 25 °C and 80 days below freezing.

Japan · population 415,844 · 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 -2.6 °C
Driest month April 149 mm
Wettest month July 270 mm
Least cloud April 60 % cloud
Hottest on record September 36 °C
Coldest on record January -12 °C
Warmest sea August 27 °C

What to expectToyama through the year

Toyama has a clear annual cycle: average daily highs run from 3.6 °C in January to 29 °C in August, a swing of 25 °C in mean temperature across the year.

Counted across a normal year, 79 days a year reach 25 °C, 19 of them reach 30 °C, 80 nights drop below freezing. The warmest reading in the 1991–2020 record is 36 °C, in September.

Rain is spread fairly evenly through the year, from 149 mm in April to 270 mm in July. There is no dry season to aim for.

The sea off Toyama is warmest in August at 27 °C and coldest in March at 10 °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	3.6 °C	201 mm	70 %
February	4.3 °C	161 mm	68 %
March	8.3 °C	173 mm	64 %
April	15.5 °C	149 mm	60 %
May	20.7 °C	153 mm	62 %
June	23.9 °C	199 mm	74 %
July	27.5 °C	270 mm	72 %
August	28.8 °C	180 mm	61 %
September	24.5 °C	218 mm	66 %
October	18.9 °C	178 mm	60 %
November	13.4 °C	167 mm	60 %
December	7.1 °C	206 mm	68 %

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	3.6 °C	-2.6 °C	0.3 °C	16.8 °C	-12.2 °C	0	0	24
February	4.3 °C	-2.5 °C	0.7 °C	16.3 °C	-11.4 °C	0	0	22
March	8.3 °C	0.1 °C	4.0 °C	22.2 °C	-8.8 °C	0	0	15
April	15.5 °C	5.6 °C	10.3 °C	26.5 °C	-5.6 °C	0	0	2
May	20.7 °C	11.1 °C	15.8 °C	30.0 °C	-0.4 °C	3	0	0
June	23.9 °C	16.0 °C	20.0 °C	31.4 °C	7.4 °C	10	0	0
July	27.5 °C	20.5 °C	23.9 °C	34.1 °C	13.2 °C	24	6	0
August	28.8 °C	21.4 °C	24.9 °C	35.4 °C	14.3 °C	28	11	0
September	24.5 °C	17.6 °C	20.8 °C	35.7 °C	7.7 °C	12	2	0
October	18.9 °C	11.5 °C	14.9 °C	29.1 °C	2.0 °C	1	0	0
November	13.4 °C	5.7 °C	9.2 °C	24.7 °C	-3.4 °C	0	0	1
December	7.1 °C	0.2 °C	3.4 °C	24.0 °C	-9.3 °C	0	0	15

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind	Sea temp
January	201 mm	22	9.9 h/day	70 %	82 %	15 km/h	12.9 °C
February	161 mm	19	11 h/day	68 %	80 %	15 km/h	10.7 °C
March	173 mm	18	12 h/day	64 %	78 %	15 km/h	10.0 °C
April	149 mm	14	13 h/day	60 %	74 %	16 km/h	11.3 °C
May	153 mm	14	14 h/day	62 %	77 %	14 km/h	15.2 °C
June	199 mm	15	15 h/day	74 %	82 %	12 km/h	19.9 °C
July	270 mm	18	14 h/day	72 %	84 %	12 km/h	23.8 °C
August	180 mm	15	14 h/day	61 %	83 %	12 km/h	26.9 °C
September	218 mm	16	12 h/day	66 %	84 %	12 km/h	25.4 °C
October	178 mm	14	11 h/day	60 %	83 %	13 km/h	21.9 °C
November	167 mm	17	10 h/day	60 %	81 %	15 km/h	18.7 °C
December	206 mm	22	9.7 h/day	68 %	83 %	16 km/h	15.6 °C

How Toyama 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
Toyama	29 °C	-2.6 °C	2,254 mm	79
Takaoka · Japan	30 °C	-1.8 °C	2,132 mm	88
Kanazawa · Japan	30 °C	-1.7 °C	2,047 mm	89
Matsumoto · Japan	28 °C	-5.9 °C	1,831 mm	80
Nagano · Japan	28 °C	-4.4 °C	1,778 mm	77
Ueda · Japan	29 °C	-4.5 °C	1,513 mm	81

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

QuestionsCommon questions about Toyama’s climate

When is the best time to visit Toyama?

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 April the driest. The month-by-month table above has the full picture.

How hot does Toyama get?

In August, the warmest month, daily highs average 29 °C. About 19 days a year pass 30 °C. The highest value in the 1991–2020 record is 36 °C.

How cold does it get in winter?

Nights average -2.6 °C in January, the coldest month. A normal year has 80 nights below freezing.

Which month is wettest in Toyama?

July, averaging 270 mm over 18 days with rain. The driest month is April with 149 mm. The year as a whole averages 2,254 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 Toyama 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: 36.700°, 137.217° (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.