Imizu climate — normals and trends

Q: What is the climate of Imizu?

Imizu has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 12.9 °C and it receives 2,331 mm of precipitation per year.

Q: What is the hottest day ever recorded in Imizu?

The hottest day measured in Imizu between 1940 and 2025 was 10 August 2023, reaching 35.8 °C.

Q: What is the coldest day in Imizu?

The coldest day measured in Imizu between 1940 and 2025 was 14 February 1942, at -10.5 °C.

Q: Does it snow in Imizu?

Yes. Imizu gets on average 261.0 cm of snow per year and has around 62 frost days.

Q: Has the climate of Imizu warmed?

Yes: Imizu warmed by +2.6 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Imizu?

The wettest day measured in Imizu between 1940 and 2025 was 8 July 1964, with 149 mm of rain in 24 hours.

Q: What was the windiest day in Imizu?

The windiest day measured in Imizu between 1940 and 2025 was 4 September 2018, with winds reaching 67.7 km/h.

Q: What is the warmest month in Imizu?

The warmest month in Imizu is August (25.4 °C on average); the coldest is January (1.4 °C).

Q: How much does it rain in Imizu?

Imizu receives on average 2,331 mm of precipitation per year, spread over about 218 rainy days.

Q: Is it sunny in Imizu?

Imizu gets on average 8.8 hours of sunshine per day, roughly 3,212 hours per year over 1940-2025.

Imizu (Japan) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 12.9 °C and it receives 2,331 mm of precipitation per year.

These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.

The warmest month is August (25.4 °C on average) and the coldest is January (1.4 °C). Rainfall peaks in July.

Imizu averages 62 frost days, 19 hot days (≥ 30 °C) and 218 rainy days per year.

Imizu has warmed by +2.6 °C between 1940 and 2025, or +0.31 °C per decade. This trend is statistically significant.

The number of frost days there went from about 85 to 39 per year over the period.

The hottest day of the period reached 35.8 °C (on 10 August 2023) and the coldest -10.5 °C (on 14 February 1942).

Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.

Climate normals · ERA5

ImizuToyama

coords: 36.77°, 137.13°
period: 1940–2025 · 86 yrs

CfaHumid subtropicalWarmest monthAugustColdest monthJanuaryWettest monthJulyDriest monthApril

Mean daily temperature

12.9°C

Average daily high

16.2°C

Average daily low

9.8°C

Annual rainfall

2,331mm

Sunshine / day

8.8h

Mean relative humidity

76%

Average peak wind

12.9km/h

Seasonal range

24.0°C

Frost days (< 0 °C)

62 d/yr

Hot days (≥ 30 °C)

19 d/yr

Rainy days (≥ 1 mm)

218 d/yr

Annual snowfall

261.0 cm

Average feels-like high

16.0 °C

Average feels-like low

8.5 °C

Average peak gust

33.7 km/h

Tropical nights (≥ 20 °C)

64 d/yr

Solar radiation

14.3 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+2.6 °C

since 1940

+0.3 °C per decade · r² = 0.65 · p = < 0.001

19402025

Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).

A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.

Records for the period

Hottest day

35.8 °C

10 August 2023

Coldest day

-10.5 °C

14 February 1942

Wettest day

149 mm

8 July 1964

Windiest day

67.7 km/h

4 September 2018

Strongest gust

160.6 km/h

4 September 2018

Hottest feels-like

42.6 °C

10 August 2023

Coldest feels-like

-15.0 °C

14 February 1942

Snowiest day

27.9 cm

31 January 1970

Sunniest day

14.0 h

29 May 1940

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	34.4 °C4 August 2025	-4.8 °C12 February 2025	14.4 °C	2,323 mm	54	44
2024	34.9 °C23 August 2024	-5.4 °C14 January 2024	14.9 °C	2,635 mm	48	40
2023	35.8 °C10 August 2023	-6.7 °C25 January 2023	15.1 °C	2,380 mm	56	36
2022	34.8 °C6 September 2022	-3.6 °C21 January 2022	14.2 °C	2,332 mm	35	47
2021	32.9 °C4 August 2021	-4.0 °C10 January 2021	14.4 °C	2,587 mm	22	37
2020	34.7 °C10 August 2020	-5.7 °C7 February 2020	14.5 °C	2,531 mm	31	24
2019	35.2 °C15 August 2019	-4.3 °C27 January 2019	14.3 °C	2,267 mm	33	35
2018	34.6 °C22 August 2018	-5.1 °C24 January 2018	14.3 °C	2,365 mm	43	53
2017	33.1 °C11 July 2017	-4.3 °C15 January 2017	13.4 °C	2,535 mm	17	50
2016	32.7 °C2 July 2016	-5.7 °C8 February 2016	14.5 °C	2,195 mm	19	35
2015	34.4 °C13 July 2015	-3.4 °C29 January 2015	14.1 °C	2,154 mm	22	35
2014	33.3 °C26 July 2014	-6.4 °C6 February 2014	13.3 °C	2,310 mm	16	67
2013	33.2 °C18 August 2013	-5.7 °C4 January 2013	13.6 °C	2,401 mm	26	50
2012	33.3 °C16 July 2012	-5.3 °C18 February 2012	13.3 °C	2,166 mm	38	75
2011	32.7 °C10 August 2011	-5.8 °C31 January 2011	13.4 °C	2,214 mm	30	74
2010	34.8 °C24 August 2010	-4.6 °C30 March 2010	14.0 °C	2,488 mm	48	43
2009	32.2 °C15 July 2009	-5.5 °C17 February 2009	13.7 °C	2,158 mm	4	40
2008	33.3 °C3 August 2008	-6.1 °C25 January 2008	13.7 °C	1,866 mm	16	50
2007	33.5 °C3 August 2007	-4.6 °C16 March 2007	14.0 °C	1,955 mm	25	27
2006	34.0 °C17 August 2006	-5.7 °C4 February 2006	13.6 °C	2,359 mm	30	53
2005	32.8 °C7 September 2005	-5.3 °C27 February 2005	13.5 °C	2,150 mm	24	65
2004	34.2 °C2 August 2004	-3.8 °C22 January 2004	14.4 °C	2,453 mm	32	46
2003	33.2 °C13 September 2003	-5.0 °C29 January 2003	13.3 °C	2,267 mm	9	49
2002	34.4 °C1 September 2002	-3.4 °C2 January 2002	13.6 °C	2,322 mm	28	44
2001	31.8 °C1 August 2001	-4.9 °C15 January 2001	13.3 °C	2,233 mm	19	56
2000	35.0 °C31 July 2000	-7.1 °C27 January 2000	13.5 °C	2,197 mm	38	47
1999	34.3 °C1 August 1999	-6.4 °C4 February 1999	13.7 °C	2,386 mm	26	51
1998	32.9 °C3 July 1998	-4.7 °C25 January 1998	14.3 °C	2,618 mm	6	33
1997	33.5 °C9 August 1997	-6.6 °C22 January 1997	13.2 °C	2,365 mm	16	58
1996	32.8 °C14 August 1996	-6.1 °C2 February 1996	12.5 °C	2,237 mm	17	71
1995	34.2 °C24 July 1995	-5.3 °C4 February 1995	12.6 °C	2,256 mm	26	68
1994	34.8 °C14 August 1994	-4.3 °C30 January 1994	14.0 °C	1,655 mm	41	60
1993	31.4 °C25 July 1993	-3.5 °C22 January 1993	12.8 °C	2,713 mm	5	53
1992	31.7 °C2 September 1992	-3.9 °C21 January 1992	13.2 °C	1,955 mm	17	45
1991	33.1 °C23 July 1991	-4.3 °C25 February 1991	13.5 °C	2,650 mm	14	48
1990	33.8 °C22 August 1990	-5.3 °C26 January 1990	14.2 °C	2,198 mm	28	33
1989	32.2 °C27 July 1989	-5.5 °C29 January 1989	13.4 °C	2,415 mm	12	39
1988	31.4 °C22 August 1988	-5.0 °C3 February 1988	12.4 °C	2,678 mm	5	64
1987	33.3 °C23 July 1987	-5.4 °C12 January 1987	13.6 °C	1,957 mm	14	55
1986	33.2 °C29 August 1986	-6.2 °C12 January 1986	12.4 °C	1,943 mm	21	69
1985	32.6 °C1 September 1985	-5.8 °C15 January 1985	12.9 °C	2,653 mm	34	63
1984	32.9 °C21 August 1984	-6.1 °C4 February 1984	12.3 °C	1,973 mm	26	82
1983	33.5 °C29 August 1983	-4.7 °C23 January 1983	12.9 °C	2,695 mm	21	68
1982	33.1 °C28 August 1982	-5.8 °C18 January 1982	13.0 °C	2,233 mm	3	54
1981	32.6 °C9 July 1981	-6.0 °C28 February 1981	12.3 °C	2,529 mm	18	60
1980	32.4 °C11 September 1980	-5.1 °C8 January 1980	12.6 °C	2,725 mm	4	66
1979	32.4 °C17 August 1979	-5.8 °C1 March 1979	13.5 °C	2,493 mm	11	54
1978	34.1 °C2 August 1978	-5.7 °C16 February 1978	13.3 °C	2,170 mm	34	57
1977	34.0 °C4 August 1977	-5.8 °C16 February 1977	13.2 °C	2,272 mm	14	65
1976	31.6 °C25 July 1976	-5.3 °C16 January 1976	12.3 °C	3,081 mm	11	66
1975	33.9 °C5 August 1975	-6.3 °C18 February 1975	13.0 °C	2,444 mm	20	72
1974	32.2 °C30 July 1974	-5.1 °C2 February 1974	12.3 °C	2,425 mm	9	70
1973	32.7 °C17 August 1973	-5.4 °C25 February 1973	12.8 °C	2,039 mm	29	73
1972	32.7 °C9 August 1972	-5.6 °C2 March 1972	13.2 °C	3,099 mm	20	55
1971	33.7 °C8 July 1971	-8.2 °C2 February 1971	12.4 °C	2,822 mm	17	72
1970	32.3 °C22 August 1970	-6.3 °C20 January 1970	12.3 °C	2,480 mm	17	84
1969	31.4 °C3 August 1969	-6.2 °C6 February 1969	12.4 °C	2,712 mm	10	65
1968	31.2 °C27 July 1968	-6.0 °C9 January 1968	12.6 °C	2,339 mm	13	67
1967	32.0 °C10 August 1967	-7.5 °C31 December 1967	12.7 °C	2,319 mm	15	71
1966	31.3 °C17 August 1966	-7.7 °C7 February 1966	11.9 °C	2,446 mm	4	80
1965	32.7 °C6 August 1965	-8.1 °C6 January 1965	11.2 °C	2,829 mm	2	94
1964	34.3 °C16 August 1964	-4.1 °C5 February 1964	13.2 °C	2,857 mm	30	56
1963	32.9 °C26 July 1963	-4.6 °C24 January 1963	12.8 °C	2,410 mm	14	69
1962	32.9 °C3 August 1962	-4.9 °C14 February 1962	13.0 °C	2,032 mm	22	54
1961	33.1 °C26 July 1961	-5.6 °C20 January 1961	13.7 °C	2,555 mm	33	65
1960	32.4 °C29 August 1960	-5.2 °C24 January 1960	13.2 °C	2,334 mm	22	63
1959	32.3 °C2 August 1959	-4.5 °C18 January 1959	13.7 °C	2,569 mm	11	49
1958	32.3 °C31 July 1958	-7.2 °C4 January 1958	13.2 °C	2,205 mm	11	49
1957	32.9 °C21 August 1957	-5.3 °C13 March 1957	12.5 °C	2,371 mm	12	60
1956	32.4 °C9 September 1956	-5.9 °C3 February 1956	12.4 °C	2,422 mm	23	72
1955	32.5 °C29 August 1955	-5.3 °C12 February 1955	13.3 °C	2,608 mm	29	46
1954	31.7 °C14 August 1954	-6.2 °C22 February 1954	12.9 °C	2,053 mm	15	62
1953	31.5 °C30 July 1953	-5.2 °C31 December 1953	12.5 °C	2,913 mm	11	58
1952	30.4 °C16 July 1952	-7.2 °C12 January 1952	11.3 °C	2,512 mm	2	94
1951	32.3 °C24 August 1951	-8.6 °C16 January 1951	11.6 °C	1,862 mm	9	85
1950	31.5 °C21 July 1950	-7.4 °C22 February 1950	12.1 °C	2,139 mm	8	87
1949	30.7 °C30 August 1949	-6.0 °C17 January 1949	11.7 °C	2,081 mm	3	80
1948	29.4 °C13 June 1948	-6.0 °C10 February 1948	12.2 °C	2,114 mm	0	78
1947	30.9 °C14 August 1947	-9.4 °C29 January 1947	10.7 °C	2,251 mm	3	103
1946	31.0 °C17 July 1946	-6.8 °C11 February 1946	11.9 °C	2,000 mm	4	90
1945	29.6 °C6 August 1945	-8.2 °C20 February 1945	11.0 °C	2,875 mm	0	99
1944	29.7 °C4 August 1944	-7.8 °C3 February 1944	11.7 °C	1,794 mm	0	107
1943	29.2 °C30 August 1943	-9.0 °C30 January 1943	11.3 °C	1,644 mm	0	102
1942	31.6 °C19 July 1942	-10.5 °C14 February 1942	11.8 °C	1,389 mm	15	87
1941	30.4 °C23 August 1941	-8.9 °C9 February 1941	11.4 °C	2,029 mm	3	94
1940	31.0 °C14 July 1940	-9.7 °C10 February 1940	11.1 °C	1,857 mm	2	101

Normals computed over complete calendar years 1940–2025.

A specific year

Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?

Year

Across the whole year

Average daily high

17.9 °C

+1.7 °C

Hot days (≥ 30 °C)

54 d/yr

+35

Frost days (< 0 °C)

44 d/yr

-18

Annual rainfall

2323 mm

-8 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	4.6 °C	+0.8 °C	201 mm	+1 mm
Feb	3.6 °C	-0.7 °C	193 mm	+27 mm
Mar	11.0 °C	+2.8 °C	189 mm	+20 mm
Apr	16.2 °C	+1.1 °C	116 mm	-37 mm
May	20.5 °C	+0.3 °C	156 mm	-4 mm
Jun	25.6 °C	+2.2 °C	220 mm	-1 mm
Jul	31.0 °C	+3.7 °C	48 mm	-248 mm
Aug	30.6 °C	+1.9 °C	321 mm	+119 mm
Sep	27.6 °C	+3.1 °C	255 mm	+31 mm
Oct	20.1 °C	+1.4 °C	233 mm	+64 mm
Nov	13.8 °C	+0.6 °C	147 mm	-19 mm
Dec	9.3 °C	+2.1 °C	244 mm	+38 mm

The year's extremes

Hottest day

34.4 °C

4 Aug 2025

Coldest day

-4.8 °C

12 Feb 2025

Wettest day

80.0 mm

10 Aug 2025

Windiest day

31.3 km/h

21 Mar 2025

Strongest gust

79.9 km/h

15 Apr 2025

Hottest feels-like

39.0 °C

22 Aug 2025

Coldest feels-like

-9.0 °C

12 Feb 2025

Snowiest day

15.6 cm

26 Dec 2025

Sunniest day

14.0 h

5 Jun 2025

What was the weather like that day?

Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.

Date

Frequently asked questions

What is the climate of Imizu?

Imizu has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 12.9 °C and it receives 2,331 mm of precipitation per year.

What is the hottest day ever recorded in Imizu?

The hottest day measured in Imizu between 1940 and 2025 was 10 August 2023, reaching 35.8 °C.

What is the coldest day in Imizu?

The coldest day measured in Imizu between 1940 and 2025 was 14 February 1942, at -10.5 °C.

Does it snow in Imizu?

Yes. Imizu gets on average 261.0 cm of snow per year and has around 62 frost days.

Has the climate of Imizu warmed?

Yes: Imizu warmed by +2.6 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Imizu?

The wettest day measured in Imizu between 1940 and 2025 was 8 July 1964, with 149 mm of rain in 24 hours.

What was the windiest day in Imizu?

The windiest day measured in Imizu between 1940 and 2025 was 4 September 2018, with winds reaching 67.7 km/h.

What is the warmest month in Imizu?

The warmest month in Imizu is August (25.4 °C on average); the coldest is January (1.4 °C).

How much does it rain in Imizu?

Imizu receives on average 2,331 mm of precipitation per year, spread over about 218 rainy days.

Is it sunny in Imizu?

Imizu gets on average 8.8 hours of sunshine per day, roughly 3,212 hours per year over 1940-2025.

What is the biggest single-day snowfall in Imizu?

The heaviest 24-hour snowfall measured in Imizu between 1940 and 2025 was 31 January 1970, with 27.9 cm.

Are there tropical nights in Imizu?

Yes: Imizu has on average 64 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Imizu?

In Imizu, between 1940 and 2025, the highest apparent temperature reached 42.6 °C on 10 August 2023, and the lowest was -15.0 °C on 14 February 1942.

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