Ōharu climate — normals and trends

Q: What is the climate of Ōharu?

Ōharu has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 14.9 °C and it receives 1,929 mm of precipitation per year.

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

The hottest day measured in Ōharu between 1940 and 2025 was 7 August 1994, reaching 38.2 °C.

Q: What is the coldest day in Ōharu?

The coldest day measured in Ōharu between 1940 and 2025 was 21 February 1968, at -12.4 °C.

Q: Does it snow in Ōharu?

Yes. Ōharu gets on average 8.0 cm of snow per year and has around 53 frost days.

Q: Has the climate of Ōharu warmed?

Yes: Ōharu warmed by +3.0 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Ōharu?

The wettest day measured in Ōharu between 1940 and 2025 was 1 September 1945, with 187 mm of rain in 24 hours.

Q: What was the windiest day in Ōharu?

The windiest day measured in Ōharu between 1940 and 2025 was 26 September 1959, with winds reaching 81.6 km/h.

Q: What is the warmest month in Ōharu?

The warmest month in Ōharu is August (26.9 °C on average); the coldest is January (3.5 °C).

Q: How much does it rain in Ōharu?

Ōharu receives on average 1,929 mm of precipitation per year, spread over about 143 rainy days.

Q: Is it sunny in Ōharu?

Ōharu gets on average 8.6 hours of sunshine per day, roughly 3,139 hours per year over 1940-2025.

Ōharu (Japan) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 14.9 °C and it receives 1,929 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 (26.9 °C on average) and the coldest is January (3.5 °C). Rainfall peaks in July.

Ōharu averages 53 frost days, 47 hot days (≥ 30 °C) and 143 rainy days per year.

Ōharu has warmed by +3.0 °C between 1940 and 2025, or +0.35 °C per decade. This trend is statistically significant.

The number of frost days there went from about 82 to 24 per year over the period.

The hottest day of the period reached 38.2 °C (on 7 August 1994) and the coldest -12.4 °C (on 21 February 1968).

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

ŌharuAichi

coords: 35.17°, 136.82°
period: 1940–2025 · 86 yrs

CfaHumid subtropicalWarmest monthAugustColdest monthJanuaryWettest monthJulyDriest monthJanuary

Mean daily temperature

14.9°C

Average daily high

19.6°C

Average daily low

10.8°C

Annual rainfall

1,929mm

Sunshine / day

8.6h

Mean relative humidity

75%

Average peak wind

14.2km/h

Seasonal range

23.4°C

Frost days (< 0 °C)

53 d/yr

Hot days (≥ 30 °C)

47 d/yr

Rainy days (≥ 1 mm)

143 d/yr

Annual snowfall

8.0 cm

Average feels-like high

19.5 °C

Average feels-like low

10.2 °C

Average peak gust

34.9 km/h

Tropical nights (≥ 20 °C)

82 d/yr

Solar radiation

14.6 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+3.0 °C

since 1940

+0.4 °C per decade · r² = 0.70 · 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

38.2 °C

7 August 1994

Coldest day

-12.4 °C

21 February 1968

Wettest day

187 mm

1 September 1945

Windiest day

81.6 km/h

26 September 1959

Strongest gust

209.9 km/h

26 September 1959

Hottest feels-like

45.2 °C

29 July 2025

Coldest feels-like

-16.8 °C

21 February 1968

Snowiest day

22.2 cm

15 February 1968

Sunniest day

14.0 h

18 June 1940

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	37.9 °C3 August 2025	-3.0 °C12 February 2025	16.5 °C	1,713 mm	88	43
2024	37.5 °C7 July 2024	-3.6 °C9 January 2024	17.3 °C	2,240 mm	85	20
2023	37.2 °C12 August 2023	-3.2 °C25 January 2023	17.0 °C	1,851 mm	87	28
2022	37.8 °C1 July 2022	-2.7 °C25 February 2022	16.5 °C	1,755 mm	77	35
2021	36.5 °C8 August 2021	-4.6 °C27 December 2021	16.6 °C	2,361 mm	51	23
2020	37.1 °C21 August 2020	-2.8 °C10 February 2020	16.7 °C	2,107 mm	56	13
2019	36.3 °C1 August 2019	-2.8 °C10 January 2019	16.7 °C	1,792 mm	63	18
2018	38.0 °C18 July 2018	-5.1 °C28 January 2018	16.6 °C	2,127 mm	63	42
2017	35.4 °C24 August 2017	-4.7 °C13 February 2017	15.7 °C	1,668 mm	68	31
2016	36.9 °C8 August 2016	-6.0 °C26 January 2016	16.6 °C	1,863 mm	61	34
2015	36.9 °C1 August 2015	-2.9 °C4 January 2015	16.4 °C	2,080 mm	45	24
2014	36.0 °C25 July 2014	-5.6 °C19 December 2014	15.6 °C	1,910 mm	48	44
2013	37.1 °C10 August 2013	-3.1 °C5 January 2013	15.9 °C	1,702 mm	65	42
2012	36.3 °C28 July 2012	-5.8 °C3 February 2012	15.2 °C	1,827 mm	58	50
2011	35.5 °C10 August 2011	-3.2 °C27 December 2011	15.5 °C	2,382 mm	62	54
2010	36.6 °C22 July 2010	-3.2 °C27 January 2010	16.0 °C	2,103 mm	67	22
2009	33.7 °C17 August 2009	-3.4 °C25 January 2009	15.9 °C	1,992 mm	47	23
2008	36.0 °C9 August 2008	-4.0 °C18 February 2008	15.7 °C	1,739 mm	53	35
2007	37.0 °C16 August 2007	-4.0 °C5 February 2007	16.1 °C	1,412 mm	51	16
2006	36.1 °C11 August 2006	-4.4 °C10 February 2006	15.7 °C	1,825 mm	54	33
2005	36.0 °C28 June 2005	-4.1 °C20 December 2005	15.6 °C	1,287 mm	71	50
2004	36.5 °C28 July 2004	-6.4 °C24 January 2004	16.4 °C	2,123 mm	69	37
2003	35.0 °C13 September 2003	-4.9 °C7 January 2003	15.3 °C	2,087 mm	40	42
2002	36.8 °C6 August 2002	-3.9 °C4 January 2002	15.7 °C	1,521 mm	65	31
2001	37.6 °C1 August 2001	-7.8 °C23 January 2001	15.5 °C	1,591 mm	62	47
2000	37.1 °C22 July 2000	-3.7 °C28 January 2000	15.5 °C	2,022 mm	62	52
1999	33.9 °C23 August 1999	-4.8 °C14 February 1999	15.6 °C	1,872 mm	50	52
1998	36.3 °C3 July 1998	-3.5 °C30 January 1998	16.4 °C	2,172 mm	55	35
1997	34.5 °C5 July 1997	-3.7 °C22 January 1997	15.3 °C	1,784 mm	52	54
1996	34.9 °C2 August 1996	-5.7 °C20 February 1996	14.6 °C	1,750 mm	46	61
1995	37.4 °C19 August 1995	-3.4 °C28 December 1995	14.8 °C	1,630 mm	47	54
1994	38.2 °C7 August 1994	-4.9 °C15 February 1994	16.3 °C	1,464 mm	75	40
1993	32.2 °C17 June 1993	-3.2 °C15 February 1993	14.7 °C	2,254 mm	18	33
1992	34.7 °C27 July 1992	-3.1 °C8 March 1992	15.4 °C	1,679 mm	45	22
1991	35.8 °C1 August 1991	-4.3 °C26 February 1991	15.6 °C	2,191 mm	49	30
1990	36.4 °C8 August 1990	-2.6 °C5 January 1990	16.2 °C	2,000 mm	65	20
1989	33.1 °C9 August 1989	-2.5 °C16 January 1989	15.4 °C	2,057 mm	38	25
1988	34.3 °C9 July 1988	-3.2 °C22 February 1988	14.6 °C	2,035 mm	38	55
1987	35.2 °C29 August 1987	-5.0 °C14 January 1987	15.5 °C	1,516 mm	54	42
1986	34.0 °C2 September 1986	-3.8 °C6 January 1986	14.4 °C	1,604 mm	42	59
1985	34.7 °C30 July 1985	-4.2 °C19 January 1985	14.9 °C	2,001 mm	48	59
1984	35.7 °C12 August 1984	-9.0 °C12 February 1984	14.4 °C	1,397 mm	50	80
1983	35.3 °C4 August 1983	-3.0 °C5 February 1983	14.9 °C	1,945 mm	43	57
1982	32.0 °C7 August 1982	-4.7 °C2 January 1982	14.8 °C	2,149 mm	31	54
1981	35.3 °C17 July 1981	-8.1 °C1 March 1981	13.8 °C	1,703 mm	42	77
1980	34.3 °C21 July 1980	-7.6 °C12 January 1980	14.0 °C	2,509 mm	14	72
1979	36.0 °C31 July 1979	-4.2 °C20 January 1979	15.3 °C	2,100 mm	47	57
1978	35.3 °C24 July 1978	-5.8 °C18 February 1978	14.8 °C	1,828 mm	60	57
1977	35.0 °C4 August 1977	-7.3 °C16 January 1977	15.0 °C	2,080 mm	44	63
1976	34.7 °C22 August 1976	-4.9 °C29 December 1976	14.2 °C	2,347 mm	27	54
1975	33.3 °C22 July 1975	-4.6 °C24 February 1975	14.8 °C	2,421 mm	46	63
1974	34.0 °C6 August 1974	-3.3 °C27 January 1974	14.4 °C	2,428 mm	33	57
1973	35.8 °C10 August 1973	-3.0 °C4 January 1973	14.7 °C	2,070 mm	46	64
1972	35.6 °C8 August 1972	-3.5 °C18 January 1972	15.0 °C	2,826 mm	38	41
1971	34.0 °C29 July 1971	-5.0 °C2 February 1971	14.4 °C	2,370 mm	39	55
1970	35.2 °C23 July 1970	-4.1 °C16 February 1970	14.1 °C	2,017 mm	38	72
1969	35.3 °C13 August 1969	-3.8 °C14 January 1969	14.3 °C	2,129 mm	42	61
1968	34.7 °C23 July 1968	-12.4 °C21 February 1968	14.3 °C	2,274 mm	28	68
1967	34.3 °C24 August 1967	-6.3 °C17 January 1967	14.6 °C	1,914 mm	48	76
1966	33.6 °C7 August 1966	-5.5 °C8 February 1966	13.5 °C	2,210 mm	28	81
1965	33.0 °C21 August 1965	-4.8 °C12 January 1965	13.1 °C	1,925 mm	29	89
1964	35.2 °C10 August 1964	-3.3 °C1 March 1964	15.4 °C	1,629 mm	60	40
1963	35.3 °C18 July 1963	-6.4 °C23 January 1963	14.5 °C	1,872 mm	53	72
1962	35.8 °C22 July 1962	-3.7 °C17 January 1962	14.7 °C	2,097 mm	51	57
1961	35.0 °C8 July 1961	-3.9 °C21 January 1961	15.5 °C	2,149 mm	58	60
1960	36.5 °C1 August 1960	-3.6 °C12 February 1960	15.2 °C	1,847 mm	48	48
1959	36.7 °C1 August 1959	-3.9 °C21 January 1959	15.6 °C	2,378 mm	49	38
1958	34.3 °C30 July 1958	-4.3 °C4 January 1958	14.9 °C	2,181 mm	40	43
1957	35.5 °C1 August 1957	-5.5 °C9 January 1957	14.5 °C	2,286 mm	33	59
1956	36.7 °C3 August 1956	-5.0 °C3 February 1956	14.5 °C	2,135 mm	43	66
1955	35.8 °C2 August 1955	-4.5 °C13 January 1955	15.3 °C	1,845 mm	59	48
1954	34.9 °C8 August 1954	-4.6 °C23 February 1954	14.9 °C	1,945 mm	34	44
1953	35.1 °C27 July 1953	-5.7 °C23 February 1953	14.7 °C	2,321 mm	32	53
1952	33.5 °C2 August 1952	-6.5 °C9 February 1952	13.4 °C	1,851 mm	31	82
1951	34.4 °C28 July 1951	-5.7 °C15 January 1951	13.4 °C	1,738 mm	35	76
1950	32.7 °C7 July 1950	-4.6 °C29 December 1950	13.7 °C	1,781 mm	18	86
1949	33.6 °C6 August 1949	-4.5 °C11 February 1949	13.4 °C	1,817 mm	22	78
1948	32.2 °C19 August 1948	-4.6 °C19 January 1948	14.0 °C	1,705 mm	15	71
1947	34.0 °C13 August 1947	-9.4 °C16 February 1947	12.7 °C	1,649 mm	37	98
1946	34.8 °C17 July 1946	-5.2 °C2 January 1946	13.8 °C	1,476 mm	29	92
1945	32.4 °C9 August 1945	-8.2 °C27 February 1945	13.0 °C	2,279 mm	18	95
1944	32.6 °C11 August 1944	-5.1 °C3 February 1944	13.7 °C	1,464 mm	22	94
1943	32.9 °C9 August 1943	-5.2 °C22 February 1943	13.3 °C	1,172 mm	28	97
1942	35.2 °C4 August 1942	-8.0 °C5 February 1942	13.6 °C	1,137 mm	51	92
1941	32.3 °C18 August 1941	-5.8 °C4 February 1941	13.5 °C	2,018 mm	13	83
1940	32.1 °C24 July 1940	-6.3 °C5 February 1940	13.0 °C	1,386 mm	24	97

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

21.4 °C

+1.8 °C

Hot days (≥ 30 °C)

88 d/yr

+41

Frost days (< 0 °C)

43 d/yr

-10

Annual rainfall

1713 mm

-216 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	9.6 °C	+1.3 °C	27 mm	-26 mm
Feb	8.3 °C	-0.9 °C	27 mm	-42 mm
Mar	14.5 °C	+1.5 °C	121 mm	+2 mm
Apr	20.4 °C	+1.8 °C	162 mm	+10 mm
May	23.8 °C	+0.9 °C	209 mm	+31 mm
Jun	28.3 °C	+2.2 °C	274 mm	+23 mm
Jul	33.7 °C	+3.9 °C	134 mm	-169 mm
Aug	34.9 °C	+3.7 °C	143 mm	-76 mm
Sep	30.6 °C	+3.2 °C	298 mm	+37 mm
Oct	23.1 °C	+1.2 °C	204 mm	+34 mm
Nov	17.0 °C	+0.6 °C	42 mm	-54 mm
Dec	11.9 °C	+1.1 °C	72 mm	+14 mm

The year's extremes

Hottest day

37.9 °C

3 Aug 2025

Coldest day

-3.0 °C

12 Feb 2025

Wettest day

79.1 mm

13 Apr 2025

Windiest day

32.7 km/h

15 Jul 2025

Strongest gust

81.4 km/h

19 Mar 2025

Hottest feels-like

45.2 °C

29 Jul 2025

Coldest feels-like

-7.0 °C

8 Feb 2025

Snowiest day

1.1 cm

7 Feb 2025

Sunniest day

14.0 h

1 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 Ōharu?

Ōharu has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 14.9 °C and it receives 1,929 mm of precipitation per year.

What is the hottest day ever recorded in Ōharu?

The hottest day measured in Ōharu between 1940 and 2025 was 7 August 1994, reaching 38.2 °C.

What is the coldest day in Ōharu?

The coldest day measured in Ōharu between 1940 and 2025 was 21 February 1968, at -12.4 °C.

Does it snow in Ōharu?

Yes. Ōharu gets on average 8.0 cm of snow per year and has around 53 frost days.

Has the climate of Ōharu warmed?

Yes: Ōharu warmed by +3.0 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Ōharu?

The wettest day measured in Ōharu between 1940 and 2025 was 1 September 1945, with 187 mm of rain in 24 hours.

What was the windiest day in Ōharu?

The windiest day measured in Ōharu between 1940 and 2025 was 26 September 1959, with winds reaching 81.6 km/h.

What is the warmest month in Ōharu?

The warmest month in Ōharu is August (26.9 °C on average); the coldest is January (3.5 °C).

How much does it rain in Ōharu?

Ōharu receives on average 1,929 mm of precipitation per year, spread over about 143 rainy days.

Is it sunny in Ōharu?

Ōharu gets on average 8.6 hours of sunshine per day, roughly 3,139 hours per year over 1940-2025.

What is the biggest single-day snowfall in Ōharu?

The heaviest 24-hour snowfall measured in Ōharu between 1940 and 2025 was 15 February 1968, with 22.2 cm.

Are there tropical nights in Ōharu?

Yes: Ōharu has on average 82 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Ōharu?

In Ōharu, between 1940 and 2025, the highest apparent temperature reached 45.2 °C on 29 July 2025, and the lowest was -16.8 °C on 21 February 1968.

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