Ōno-hara climate — normals and trends

Q: What is the climate of Ōno-hara?

Ōno-hara has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 15.0 °C and it receives 1,603 mm of precipitation per year.

Q: What is the hottest day ever recorded in Ōno-hara?

The hottest day measured in Ōno-hara between 1940 and 2025 was 16 August 1983, reaching 35.6 °C.

Q: What is the coldest day in Ōno-hara?

The coldest day measured in Ōno-hara between 1940 and 2025 was 16 February 1977, at -8.2 °C.

Q: Does it snow in Ōno-hara?

Yes. Ōno-hara gets on average 10.6 cm of snow per year and has around 23 frost days.

Q: Has the climate of Ōno-hara warmed?

Yes: Ōno-hara warmed by +2.5 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Ōno-hara?

The wettest day measured in Ōno-hara between 1940 and 2025 was 6 September 2005, with 183 mm of rain in 24 hours.

Q: What was the windiest day in Ōno-hara?

The windiest day measured in Ōno-hara between 1940 and 2025 was 7 September 2004, with winds reaching 73.6 km/h.

Q: What is the warmest month in Ōno-hara?

The warmest month in Ōno-hara is August (26.5 °C on average); the coldest is January (4.2 °C).

Q: How much does it rain in Ōno-hara?

Ōno-hara receives on average 1,603 mm of precipitation per year, spread over about 126 rainy days.

Q: Is it sunny in Ōno-hara?

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

Ōno-hara (Japan) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 15.0 °C and it receives 1,603 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 (26.5 °C on average) and the coldest is January (4.2 °C). Rainfall peaks in June.

Ōno-hara averages 23 frost days, 27 hot days (≥ 30 °C) and 126 rainy days per year.

Ōno-hara has warmed by +2.5 °C between 1940 and 2025, or +0.30 °C per decade. This trend is statistically significant.

The number of frost days there went from about 42 to 4 per year over the period.

The hottest day of the period reached 35.6 °C (on 16 August 1983) and the coldest -8.2 °C (on 16 February 1977).

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

Ōno-haraHiroshima

coords: 34.28°, 132.27°
period: 1940–2025 · 86 yrs

CfaHumid subtropicalWarmest monthAugustColdest monthJanuaryWettest monthJuneDriest monthJanuary

Mean daily temperature

15.0°C

Average daily high

18.6°C

Average daily low

11.8°C

Annual rainfall

1,603mm

Sunshine / day

8.8h

Mean relative humidity

75%

Average peak wind

14.2km/h

Seasonal range

22.3°C

Frost days (< 0 °C)

23 d/yr

Hot days (≥ 30 °C)

27 d/yr

Rainy days (≥ 1 mm)

126 d/yr

Annual snowfall

10.6 cm

Average feels-like high

18.6 °C

Average feels-like low

11.0 °C

Average peak gust

35.1 km/h

Tropical nights (≥ 20 °C)

85 d/yr

Solar radiation

14.7 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+2.5 °C

since 1940

+0.3 °C per decade · r² = 0.73 · 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

35.6 °C

16 August 1983

Coldest day

-8.2 °C

16 February 1977

Wettest day

183 mm

6 September 2005

Windiest day

73.6 km/h

7 September 2004

Strongest gust

193.0 km/h

7 September 2004

Hottest feels-like

42.3 °C

16 August 2024

Coldest feels-like

-14.5 °C

16 February 1977

Snowiest day

22.8 cm

15 February 1968

Sunniest day

14.0 h

13 June 1950

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	33.6 °C2 August 2025	-5.7 °C25 February 2025	15.7 °C	1,617 mm	71	34
2024	34.6 °C30 July 2024	-2.1 °C24 January 2024	16.9 °C	1,805 mm	68	6
2023	34.6 °C6 August 2023	-3.7 °C24 January 2023	16.7 °C	1,360 mm	48	12
2022	33.0 °C3 August 2022	-2.2 °C17 February 2022	16.3 °C	1,473 mm	49	10
2021	35.1 °C7 August 2021	-4.1 °C8 January 2021	16.4 °C	2,198 mm	29	14
2020	34.9 °C16 August 2020	-0.5 °C19 February 2020	16.3 °C	2,055 mm	40	3
2019	33.2 °C13 August 2019	0.2 °C4 January 2019	16.4 °C	1,503 mm	29	0
2018	35.4 °C4 August 2018	-3.5 °C8 February 2018	16.1 °C	1,781 mm	46	23
2017	33.0 °C23 August 2017	-1.7 °C26 January 2017	15.6 °C	1,510 mm	45	8
2016	33.1 °C21 August 2016	-4.5 °C24 January 2016	16.5 °C	2,114 mm	45	7
2015	33.5 °C30 July 2015	-1.4 °C9 February 2015	15.9 °C	1,843 mm	19	6
2014	32.7 °C24 July 2014	-0.6 °C23 January 2014	15.5 °C	1,798 mm	15	3
2013	35.5 °C25 July 2013	-1.3 °C8 February 2013	16.1 °C	1,781 mm	48	7
2012	32.7 °C7 August 2012	-2.3 °C2 February 2012	15.5 °C	1,684 mm	36	17
2011	32.7 °C10 August 2011	-3.9 °C16 January 2011	15.7 °C	1,590 mm	31	11
2010	34.3 °C3 September 2010	-1.4 °C14 January 2010	16.1 °C	1,649 mm	54	6
2009	31.5 °C7 August 2009	-1.5 °C24 January 2009	16.0 °C	1,323 mm	15	3
2008	33.2 °C1 August 2008	-0.5 °C18 February 2008	15.9 °C	1,418 mm	37	5
2007	33.1 °C17 August 2007	0.0 °C30 January 2007	16.2 °C	1,198 mm	29	0
2006	34.3 °C8 August 2006	-2.6 °C4 February 2006	15.7 °C	1,778 mm	34	15
2005	32.7 °C13 August 2005	-2.7 °C18 December 2005	15.4 °C	1,210 mm	30	18
2004	34.9 °C30 July 2004	-4.0 °C22 January 2004	16.3 °C	2,040 mm	33	12
2003	33.1 °C22 August 2003	-3.4 °C29 January 2003	15.7 °C	1,749 mm	24	11
2002	33.7 °C24 July 2002	-1.5 °C2 January 2002	16.0 °C	1,193 mm	40	7
2001	34.5 °C4 August 2001	-4.4 °C15 January 2001	15.7 °C	1,579 mm	45	17
2000	33.8 °C12 August 2000	-1.7 °C22 February 2000	15.7 °C	1,537 mm	36	16
1999	31.5 °C9 August 1999	-2.8 °C4 February 1999	15.8 °C	1,664 mm	15	12
1998	34.5 °C5 August 1998	-3.4 °C25 January 1998	16.6 °C	1,765 mm	45	11
1997	33.6 °C2 September 1997	-3.3 °C22 January 1997	15.6 °C	1,701 mm	35	8
1996	34.0 °C10 August 1996	-4.7 °C2 February 1996	15.1 °C	1,333 mm	37	25
1995	34.2 °C3 August 1995	-2.0 °C31 January 1995	15.2 °C	1,351 mm	47	21
1994	34.3 °C16 July 1994	-3.4 °C14 February 1994	16.2 °C	1,009 mm	63	13
1993	30.2 °C11 July 1993	-1.2 °C28 January 1993	15.0 °C	2,233 mm	2	7
1992	32.8 °C28 July 1992	-1.1 °C23 February 1992	15.5 °C	1,577 mm	22	6
1991	33.0 °C24 July 1991	-4.7 °C23 February 1991	15.5 °C	1,640 mm	21	10
1990	34.9 °C11 August 1990	-4.7 °C26 January 1990	16.2 °C	1,863 mm	52	9
1989	31.6 °C12 August 1989	-1.2 °C30 January 1989	15.6 °C	1,753 mm	17	4
1988	32.2 °C10 July 1988	-2.7 °C3 February 1988	14.9 °C	1,528 mm	13	17
1987	31.8 °C30 July 1987	-1.8 °C13 January 1987	15.4 °C	1,833 mm	13	15
1986	32.2 °C2 August 1986	-3.1 °C5 January 1986	14.7 °C	1,436 mm	32	39
1985	33.0 °C28 July 1985	-5.0 °C31 January 1985	15.2 °C	1,716 mm	41	27
1984	33.6 °C9 August 1984	-6.7 °C10 February 1984	14.6 °C	1,379 mm	33	53
1983	35.6 °C16 August 1983	-3.8 °C21 February 1983	15.2 °C	1,682 mm	31	26
1982	30.4 °C17 August 1982	-3.1 °C29 January 1982	15.0 °C	1,904 mm	5	25
1981	32.1 °C19 July 1981	-7.0 °C26 February 1981	14.3 °C	1,406 mm	24	42
1980	31.1 °C20 July 1980	-3.5 °C6 February 1980	14.2 °C	2,408 mm	3	36
1979	33.0 °C11 August 1979	-2.6 °C7 February 1979	15.2 °C	2,075 mm	24	17
1978	32.2 °C6 July 1978	-4.2 °C16 February 1978	15.2 °C	1,237 mm	39	22
1977	33.5 °C3 August 1977	-8.2 °C16 February 1977	15.0 °C	1,689 mm	21	48
1976	31.7 °C10 August 1976	-4.3 °C27 December 1976	14.3 °C	2,072 mm	12	27
1975	33.0 °C22 July 1975	-3.8 °C24 February 1975	15.1 °C	1,911 mm	21	22
1974	32.6 °C15 August 1974	-5.2 °C12 February 1974	14.5 °C	1,688 mm	19	36
1973	34.1 °C22 July 1973	-3.0 °C24 December 1973	14.9 °C	1,355 mm	38	14
1972	31.6 °C8 August 1972	-2.5 °C2 March 1972	14.8 °C	2,256 mm	20	15
1971	33.2 °C16 July 1971	-4.0 °C11 February 1971	14.8 °C	1,421 mm	28	34
1970	34.0 °C5 August 1970	-4.2 °C5 January 1970	14.5 °C	1,622 mm	26	40
1969	34.6 °C12 August 1969	-3.8 °C7 February 1969	14.6 °C	1,343 mm	33	30
1968	32.7 °C23 July 1968	-6.8 °C26 February 1968	14.5 °C	1,766 mm	14	49
1967	33.6 °C17 August 1967	-6.1 °C16 January 1967	14.9 °C	1,415 mm	52	45
1966	33.4 °C8 August 1966	-4.7 °C20 January 1966	14.2 °C	1,793 mm	20	29
1965	32.3 °C22 August 1965	-5.1 °C3 February 1965	13.6 °C	1,843 mm	9	37
1964	33.4 °C14 August 1964	-2.0 °C14 February 1964	15.4 °C	1,389 mm	49	15
1963	32.1 °C22 July 1963	-5.1 °C21 February 1963	14.3 °C	2,032 mm	24	53
1962	33.0 °C27 July 1962	-2.2 °C1 February 1962	14.7 °C	1,517 mm	31	25
1961	32.5 °C17 July 1961	-3.9 °C15 January 1961	15.5 °C	1,381 mm	44	31
1960	33.4 °C1 August 1960	-4.5 °C27 January 1960	15.1 °C	1,336 mm	35	23
1959	32.5 °C3 August 1959	-5.1 °C17 January 1959	15.6 °C	1,676 mm	34	17
1958	32.7 °C31 July 1958	-3.0 °C3 March 1958	15.1 °C	1,320 mm	19	17
1957	31.5 °C20 July 1957	-5.1 °C11 February 1957	14.4 °C	1,896 mm	10	29
1956	34.5 °C4 August 1956	-3.5 °C9 January 1956	14.2 °C	1,837 mm	30	46
1955	32.0 °C8 August 1955	-3.4 °C16 January 1955	15.0 °C	1,364 mm	25	29
1954	32.1 °C10 August 1954	-3.1 °C9 February 1954	14.9 °C	1,850 mm	20	24
1953	33.6 °C24 August 1953	-2.9 °C10 February 1953	14.8 °C	1,985 mm	28	19
1952	31.4 °C3 August 1952	-4.0 °C19 February 1952	14.0 °C	1,622 mm	5	26
1951	31.9 °C12 August 1951	-4.7 °C16 February 1951	14.1 °C	1,651 mm	25	31
1950	30.7 °C21 August 1950	-3.9 °C21 February 1950	14.1 °C	1,284 mm	2	28
1949	30.7 °C6 August 1949	-2.6 °C6 January 1949	13.8 °C	1,506 mm	1	23
1948	29.9 °C4 September 1948	-1.7 °C2 January 1948	14.4 °C	1,479 mm	0	24
1947	31.6 °C12 August 1947	-5.4 °C16 February 1947	13.0 °C	1,273 mm	11	63
1946	33.4 °C25 July 1946	-2.8 °C10 January 1946	14.3 °C	1,085 mm	12	36
1945	31.4 °C10 August 1945	-5.0 °C27 February 1945	13.4 °C	1,826 mm	4	63
1944	30.3 °C18 July 1944	-2.0 °C7 January 1944	14.0 °C	981 mm	1	42
1943	31.0 °C15 August 1943	-5.7 °C12 January 1943	13.6 °C	1,001 mm	2	55
1942	33.2 °C2 August 1942	-4.8 °C12 February 1942	13.9 °C	785 mm	29	53
1941	29.7 °C7 August 1941	-5.6 °C31 January 1941	13.9 °C	1,234 mm	0	41
1940	29.9 °C26 July 1940	-5.3 °C27 January 1940	13.3 °C	1,114 mm	0	55

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

19.8 °C

+1.2 °C

Hot days (≥ 30 °C)

71 d/yr

+44

Frost days (< 0 °C)

34 d/yr

+11

Annual rainfall

1618 mm

+15 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	8.2 °C	+0.5 °C	15 mm	-32 mm
Feb	6.7 °C	-1.8 °C	51 mm	-17 mm
Mar	13.4 °C	+1.2 °C	165 mm	+57 mm
Apr	18.3 °C	+0.9 °C	92 mm	-52 mm
May	21.5 °C	-0.1 °C	238 mm	+79 mm
Jun	26.4 °C	+1.9 °C	313 mm	+71 mm
Jul	31.5 °C	+3.1 °C	92 mm	-144 mm
Aug	31.2 °C	+1.5 °C	188 mm	+19 mm
Sep	28.4 °C	+2.1 °C	292 mm	+90 mm
Oct	23.0 °C	+1.8 °C	98 mm	-9 mm
Nov	16.6 °C	+0.8 °C	30 mm	-43 mm
Dec	11.2 °C	+0.9 °C	44 mm	-4 mm

The year's extremes

Hottest day

33.6 °C

2 Aug 2025

Coldest day

-5.7 °C

25 Feb 2025

Wettest day

87.6 mm

10 Aug 2025

Windiest day

29.9 km/h

13 Apr 2025

Strongest gust

68.4 km/h

13 Apr 2025

Hottest feels-like

40.6 °C

2 Aug 2025

Coldest feels-like

-9.9 °C

8 Feb 2025

Snowiest day

5.9 cm

1 Feb 2025

Sunniest day

13.9 h

4 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 Ōno-hara?

Ōno-hara has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 15.0 °C and it receives 1,603 mm of precipitation per year.

What is the hottest day ever recorded in Ōno-hara?

The hottest day measured in Ōno-hara between 1940 and 2025 was 16 August 1983, reaching 35.6 °C.

What is the coldest day in Ōno-hara?

The coldest day measured in Ōno-hara between 1940 and 2025 was 16 February 1977, at -8.2 °C.

Does it snow in Ōno-hara?

Yes. Ōno-hara gets on average 10.6 cm of snow per year and has around 23 frost days.

Has the climate of Ōno-hara warmed?

Yes: Ōno-hara warmed by +2.5 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Ōno-hara?

The wettest day measured in Ōno-hara between 1940 and 2025 was 6 September 2005, with 183 mm of rain in 24 hours.

What was the windiest day in Ōno-hara?

The windiest day measured in Ōno-hara between 1940 and 2025 was 7 September 2004, with winds reaching 73.6 km/h.

What is the warmest month in Ōno-hara?

The warmest month in Ōno-hara is August (26.5 °C on average); the coldest is January (4.2 °C).

How much does it rain in Ōno-hara?

Ōno-hara receives on average 1,603 mm of precipitation per year, spread over about 126 rainy days.

Is it sunny in Ōno-hara?

Ōno-hara 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 Ōno-hara?

The heaviest 24-hour snowfall measured in Ōno-hara between 1940 and 2025 was 15 February 1968, with 22.8 cm.

Are there tropical nights in Ōno-hara?

Yes: Ōno-hara has on average 85 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Ōno-hara?

In Ōno-hara, between 1940 and 2025, the highest apparent temperature reached 42.3 °C on 16 August 2024, and the lowest was -14.5 °C on 16 February 1977.

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