Mitsuke climate — normals and trends

Q: What is the climate of Mitsuke?

Mitsuke has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 12.0 °C and it receives 1,995 mm of precipitation per year.

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

The hottest day measured in Mitsuke between 1940 and 2025 was 29 July 2018, reaching 38.0 °C.

Q: What is the coldest day in Mitsuke?

The coldest day measured in Mitsuke between 1940 and 2025 was 15 February 1942, at -13.1 °C.

Q: Does it snow in Mitsuke?

Yes. Mitsuke gets on average 290.7 cm of snow per year and has around 99 frost days.

Q: Has the climate of Mitsuke warmed?

Yes: Mitsuke warmed by +2.8 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Mitsuke?

The wettest day measured in Mitsuke between 1940 and 2025 was 27 June 1978, with 149 mm of rain in 24 hours.

Q: What was the windiest day in Mitsuke?

The windiest day measured in Mitsuke between 1940 and 2025 was 16 September 1961, with winds reaching 49.2 km/h.

Q: What is the warmest month in Mitsuke?

The warmest month in Mitsuke is August (25.2 °C on average); the coldest is January (-0.1 °C).

Q: How much does it rain in Mitsuke?

Mitsuke receives on average 1,995 mm of precipitation per year, spread over about 224 rainy days.

Q: Is it sunny in Mitsuke?

Mitsuke gets on average 8.1 hours of sunshine per day, roughly 2,957 hours per year over 1940-2025.

Mitsuke (Japan) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 12.0 °C and it receives 1,995 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 (25.2 °C on average) and the coldest is January (-0.1 °C). Rainfall peaks in July.

Mitsuke averages 99 frost days, 30 hot days (≥ 30 °C) and 224 rainy days per year.

Mitsuke has warmed by +2.8 °C between 1940 and 2025, or +0.32 °C per decade. This trend is statistically significant.

The number of frost days there went from about 122 to 76 per year over the period.

The hottest day of the period reached 38.0 °C (on 29 July 2018) and the coldest -13.1 °C (on 15 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

MitsukeNiigata

coords: 37.53°, 138.93°
period: 1940–2025 · 86 yrs

DfaHot-summer humid continentalWarmest monthAugustColdest monthJanuaryWettest monthJulyDriest monthApril

Mean daily temperature

12.0°C

Average daily high

16.4°C

Average daily low

7.9°C

Annual rainfall

1,995mm

Sunshine / day

8.1h

Mean relative humidity

80%

Average peak wind

11.9km/h

Seasonal range

25.3°C

Frost days (< 0 °C)

99 d/yr

Hot days (≥ 30 °C)

30 d/yr

Rainy days (≥ 1 mm)

224 d/yr

Annual snowfall

290.7 cm

Average feels-like high

16.2 °C

Average feels-like low

6.5 °C

Average peak gust

34.4 km/h

Tropical nights (≥ 20 °C)

49 d/yr

Solar radiation

13.6 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+2.8 °C

since 1940

+0.3 °C per decade · r² = 0.68 · 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

38.0 °C

29 July 2018

Coldest day

-13.1 °C

15 February 1942

Wettest day

149 mm

27 June 1978

Windiest day

49.2 km/h

16 September 1961

Strongest gust

146.2 km/h

16 September 1961

Hottest feels-like

44.5 °C

23 August 2023

Coldest feels-like

-18.1 °C

15 February 1942

Snowiest day

37.6 cm

15 February 2014

Sunniest day

14.1 h

11 June 1940

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	36.2 °C30 July 2025	-6.5 °C19 January 2025	13.1 °C	2,136 mm	63	93
2024	36.2 °C23 August 2024	-10.0 °C11 January 2024	14.0 °C	2,209 mm	57	80
2023	37.8 °C23 August 2023	-8.4 °C22 January 2023	14.2 °C	1,945 mm	67	76
2022	35.4 °C1 August 2022	-7.6 °C6 January 2022	13.4 °C	2,078 mm	49	80
2021	36.8 °C3 August 2021	-9.9 °C21 January 2021	13.4 °C	2,094 mm	37	78
2020	36.9 °C3 September 2020	-9.2 °C12 February 2020	13.6 °C	2,356 mm	38	62
2019	36.4 °C14 August 2019	-7.7 °C15 February 2019	13.4 °C	2,070 mm	38	82
2018	38.0 °C29 July 2018	-11.9 °C15 January 2018	13.5 °C	1,704 mm	50	82
2017	37.1 °C7 August 2017	-8.2 °C12 March 2017	12.5 °C	2,327 mm	29	90
2016	35.8 °C7 August 2016	-10.1 °C8 February 2016	13.5 °C	1,838 mm	35	76
2015	37.9 °C13 July 2015	-7.0 °C28 January 2015	13.4 °C	1,637 mm	29	76
2014	35.4 °C5 August 2014	-11.0 °C15 January 2014	12.5 °C	1,845 mm	27	91
2013	34.4 °C31 August 2013	-9.4 °C17 February 2013	12.5 °C	2,321 mm	32	94
2012	37.2 °C17 September 2012	-10.1 °C25 December 2012	12.5 °C	1,846 mm	52	107
2011	35.8 °C20 July 2011	-9.6 °C21 December 2011	12.5 °C	1,848 mm	50	111
2010	35.6 °C1 September 2010	-6.6 °C4 February 2010	13.0 °C	1,981 mm	53	85
2009	34.6 °C15 July 2009	-9.6 °C22 February 2009	12.8 °C	1,736 mm	22	81
2008	34.5 °C3 August 2008	-8.0 °C25 February 2008	12.9 °C	1,663 mm	30	81
2007	37.4 °C12 August 2007	-11.1 °C5 February 2007	13.1 °C	1,757 mm	33	77
2006	37.0 °C17 August 2006	-9.0 °C7 January 2006	12.7 °C	1,925 mm	32	87
2005	34.1 °C21 June 2005	-8.8 °C24 January 2005	12.5 °C	2,098 mm	36	95
2004	37.0 °C5 July 2004	-9.7 °C10 January 2004	13.4 °C	2,235 mm	41	83
2003	34.8 °C13 September 2003	-8.8 °C3 January 2003	12.5 °C	1,685 mm	18	83
2002	36.6 °C1 September 2002	-5.7 °C31 December 2002	12.7 °C	2,133 mm	34	73
2001	34.1 °C15 July 2001	-6.4 °C12 March 2001	12.5 °C	1,890 mm	31	89
2000	37.1 °C31 July 2000	-10.9 °C27 January 2000	12.8 °C	1,968 mm	49	90
1999	36.8 °C7 August 1999	-8.0 °C5 February 1999	13.0 °C	2,040 mm	40	89
1998	35.2 °C27 July 1998	-6.9 °C25 January 1998	13.3 °C	2,160 mm	20	82
1997	36.2 °C9 August 1997	-6.5 °C22 January 1997	12.4 °C	1,962 mm	25	89
1996	34.8 °C14 August 1996	-8.1 °C21 February 1996	11.6 °C	1,975 mm	29	106
1995	35.3 °C24 July 1995	-8.4 °C3 January 1995	11.9 °C	2,117 mm	24	91
1994	36.7 °C14 August 1994	-7.9 °C26 December 1994	13.1 °C	1,547 mm	50	95
1993	32.9 °C4 September 1993	-8.2 °C1 January 1993	11.9 °C	2,159 mm	6	85
1992	34.8 °C25 August 1992	-8.6 °C16 January 1992	12.4 °C	1,764 mm	30	77
1991	35.0 °C19 August 1991	-5.5 °C14 February 1991	12.7 °C	2,110 mm	21	84
1990	36.4 °C22 August 1990	-9.3 °C21 January 1990	13.6 °C	1,677 mm	42	65
1989	34.2 °C25 July 1989	-7.8 °C18 January 1989	12.8 °C	1,868 mm	27	72
1988	34.0 °C14 August 1988	-12.2 °C7 January 1988	11.6 °C	2,055 mm	20	105
1987	35.2 °C16 July 1987	-9.9 °C2 February 1987	12.6 °C	1,628 mm	31	101
1986	35.7 °C29 August 1986	-8.5 °C20 January 1986	11.5 °C	1,795 mm	26	91
1985	36.4 °C30 August 1985	-10.7 °C16 December 1985	12.1 °C	2,114 mm	50	103
1984	35.8 °C15 August 1984	-8.4 °C12 February 1984	11.4 °C	1,736 mm	41	124
1983	34.3 °C14 August 1983	-9.6 °C28 December 1983	12.0 °C	2,417 mm	25	95
1982	34.7 °C28 August 1982	-8.5 °C19 December 1982	12.2 °C	1,776 mm	15	94
1981	34.8 °C30 July 1981	-6.4 °C27 February 1981	11.1 °C	2,118 mm	28	113
1980	34.3 °C11 September 1980	-6.9 °C2 January 1980	11.1 °C	2,163 mm	10	102
1979	34.3 °C27 August 1979	-7.2 °C13 January 1979	12.5 °C	2,203 mm	15	94
1978	35.6 °C2 August 1978	-11.0 °C17 February 1978	11.8 °C	2,100 mm	42	97
1977	34.8 °C4 August 1977	-8.8 °C19 January 1977	11.6 °C	1,804 mm	19	102
1976	34.0 °C24 July 1976	-9.2 °C14 February 1976	11.1 °C	2,495 mm	12	110
1975	35.0 °C18 August 1975	-8.9 °C5 January 1975	12.0 °C	2,088 mm	41	103
1974	33.5 °C2 September 1974	-7.2 °C21 January 1974	11.3 °C	2,008 mm	21	118
1973	34.7 °C18 August 1973	-7.3 °C17 January 1973	11.8 °C	1,893 mm	41	110
1972	34.7 °C25 July 1972	-11.0 °C4 January 1972	12.3 °C	2,315 mm	29	86
1971	35.7 °C6 August 1971	-9.5 °C14 December 1971	11.3 °C	2,321 mm	20	106
1970	34.2 °C22 August 1970	-9.4 °C5 January 1970	11.3 °C	2,045 mm	33	125
1969	34.4 °C4 August 1969	-10.6 °C31 December 1969	11.3 °C	2,295 mm	15	121
1968	35.0 °C26 July 1968	-9.2 °C24 February 1968	11.9 °C	1,959 mm	23	99
1967	33.0 °C20 July 1967	-11.2 °C31 December 1967	11.8 °C	2,072 mm	26	104
1966	33.5 °C20 August 1966	-8.9 °C31 December 1966	10.9 °C	2,171 mm	26	123
1965	34.8 °C6 August 1965	-11.7 °C6 January 1965	10.4 °C	2,169 mm	11	133
1964	34.3 °C19 August 1964	-8.2 °C17 December 1964	12.0 °C	2,450 mm	32	99
1963	35.7 °C10 August 1963	-10.7 °C2 January 1963	11.8 °C	2,144 mm	23	110
1962	36.4 °C3 August 1962	-8.7 °C14 December 1962	12.1 °C	1,749 mm	35	94
1961	34.7 °C29 July 1961	-7.6 °C13 January 1961	12.6 °C	2,422 mm	43	103
1960	34.6 °C29 August 1960	-8.6 °C20 December 1960	12.1 °C	2,126 mm	29	103
1959	33.5 °C8 July 1959	-10.0 °C9 January 1959	12.6 °C	2,149 mm	18	89
1958	32.2 °C18 August 1958	-10.1 °C12 January 1958	12.0 °C	2,110 mm	15	104
1957	35.3 °C21 August 1957	-8.9 °C3 February 1957	11.4 °C	1,935 mm	22	106
1956	35.1 °C9 September 1956	-9.1 °C27 February 1956	11.5 °C	2,197 mm	19	115
1955	35.1 °C16 July 1955	-9.0 °C7 February 1955	12.3 °C	2,064 mm	39	92
1954	35.6 °C18 August 1954	-11.5 °C13 January 1954	11.9 °C	1,741 mm	27	95
1953	32.8 °C10 August 1953	-6.7 °C28 January 1953	11.4 °C	2,424 mm	12	88
1952	31.3 °C19 August 1952	-11.7 °C10 January 1952	10.0 °C	2,061 mm	7	129
1951	35.2 °C19 August 1951	-11.0 °C16 January 1951	10.7 °C	1,634 mm	28	119
1950	34.7 °C20 August 1950	-10.8 °C5 January 1950	11.4 °C	1,696 mm	47	123
1949	34.2 °C29 July 1949	-10.4 °C27 December 1949	10.9 °C	1,868 mm	24	117
1948	32.7 °C9 September 1948	-9.1 °C30 March 1948	11.2 °C	1,691 mm	16	112
1947	32.0 °C18 July 1947	-10.8 °C29 January 1947	9.6 °C	1,974 mm	12	140
1946	32.8 °C29 July 1946	-9.2 °C17 March 1946	11.0 °C	1,779 mm	25	121
1945	32.5 °C25 August 1945	-11.8 °C22 February 1945	10.1 °C	2,524 mm	12	130
1944	31.7 °C22 August 1944	-12.8 °C7 January 1944	10.9 °C	1,890 mm	15	129
1943	32.2 °C22 July 1943	-12.8 °C10 January 1943	10.5 °C	1,509 mm	25	138
1942	34.2 °C1 September 1942	-13.1 °C15 February 1942	10.7 °C	1,493 mm	33	127
1941	34.4 °C24 August 1941	-12.2 °C12 February 1941	10.5 °C	1,653 mm	11	125
1940	32.3 °C14 July 1940	-11.5 °C17 January 1940	10.2 °C	1,827 mm	8	130

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

17.6 °C

+1.2 °C

Hot days (≥ 30 °C)

63 d/yr

+33

Frost days (< 0 °C)

93 d/yr

-6

Annual rainfall

2136 mm

+141 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	3.6 °C	+0.5 °C	231 mm	+35 mm
Feb	2.9 °C	-0.9 °C	193 mm	+41 mm
Mar	9.4 °C	+1.6 °C	137 mm	-9 mm
Apr	15.7 °C	+0.2 °C	138 mm	+24 mm
May	21.0 °C	-0.3 °C	139 mm	+19 mm
Jun	26.6 °C	+1.9 °C	160 mm	+3 mm
Jul	32.7 °C	+4.6 °C	16 mm	-234 mm
Aug	30.7 °C	+1.0 °C	268 mm	+82 mm
Sep	27.6 °C	+2.4 °C	211 mm	+45 mm
Oct	19.5 °C	+0.5 °C	211 mm	+61 mm
Nov	13.1 °C	+0.4 °C	200 mm	+46 mm
Dec	7.8 °C	+1.5 °C	233 mm	+30 mm

The year's extremes

Hottest day

36.2 °C

30 Jul 2025

Coldest day

-6.5 °C

19 Jan 2025

Wettest day

53.9 mm

12 Aug 2025

Windiest day

32.1 km/h

29 Apr 2025

Strongest gust

86.4 km/h

16 Apr 2025

Hottest feels-like

41.6 °C

30 Jul 2025

Coldest feels-like

-10.9 °C

19 Jan 2025

Snowiest day

14.2 cm

26 Dec 2025

Sunniest day

14.0 h

18 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 Mitsuke?

Mitsuke has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 12.0 °C and it receives 1,995 mm of precipitation per year.

What is the hottest day ever recorded in Mitsuke?

The hottest day measured in Mitsuke between 1940 and 2025 was 29 July 2018, reaching 38.0 °C.

What is the coldest day in Mitsuke?

The coldest day measured in Mitsuke between 1940 and 2025 was 15 February 1942, at -13.1 °C.

Does it snow in Mitsuke?

Yes. Mitsuke gets on average 290.7 cm of snow per year and has around 99 frost days.

Has the climate of Mitsuke warmed?

Yes: Mitsuke warmed by +2.8 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Mitsuke?

The wettest day measured in Mitsuke between 1940 and 2025 was 27 June 1978, with 149 mm of rain in 24 hours.

What was the windiest day in Mitsuke?

The windiest day measured in Mitsuke between 1940 and 2025 was 16 September 1961, with winds reaching 49.2 km/h.

What is the warmest month in Mitsuke?

The warmest month in Mitsuke is August (25.2 °C on average); the coldest is January (-0.1 °C).

How much does it rain in Mitsuke?

Mitsuke receives on average 1,995 mm of precipitation per year, spread over about 224 rainy days.

Is it sunny in Mitsuke?

Mitsuke gets on average 8.1 hours of sunshine per day, roughly 2,957 hours per year over 1940-2025.

What is the biggest single-day snowfall in Mitsuke?

The heaviest 24-hour snowfall measured in Mitsuke between 1940 and 2025 was 15 February 2014, with 37.6 cm.

Are there tropical nights in Mitsuke?

Yes: Mitsuke has on average 49 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Mitsuke?

In Mitsuke, between 1940 and 2025, the highest apparent temperature reached 44.5 °C on 23 August 2023, and the lowest was -18.1 °C on 15 February 1942.

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