Sōja climate — normals and trends

Q: What is the climate of Sōja?

Sōja has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 14.9 °C and it receives 1,367 mm of precipitation per year.

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

The hottest day measured in Sōja between 1940 and 2025 was 2 August 2001, reaching 40.0 °C.

Q: What is the coldest day in Sōja?

The coldest day measured in Sōja between 1940 and 2025 was 10 February 1940, at -11.9 °C.

Q: Does it snow in Sōja?

Yes. Sōja gets on average 8.8 cm of snow per year and has around 57 frost days.

Q: Has the climate of Sōja warmed?

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

Q: What is the wettest day in Sōja?

The wettest day measured in Sōja between 1940 and 2025 was 29 September 2004, with 158 mm of rain in 24 hours.

Q: What was the windiest day in Sōja?

The windiest day measured in Sōja between 1940 and 2025 was 21 August 1970, with winds reaching 58.9 km/h.

Q: What is the warmest month in Sōja?

The warmest month in Sōja is August (27.0 °C on average); the coldest is January (3.6 °C).

Q: How much does it rain in Sōja?

Sōja receives on average 1,367 mm of precipitation per year, spread over about 119 rainy days.

Q: Is it sunny in Sōja?

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

Sōja (Japan) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 14.9 °C and it receives 1,367 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 (27.0 °C on average) and the coldest is January (3.6 °C). Rainfall peaks in July.

Sōja averages 57 frost days, 47 hot days (≥ 30 °C) and 119 rainy days per year.

Sōja 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 81 to 33 per year over the period.

The hottest day of the period reached 40.0 °C (on 2 August 2001) and the coldest -11.9 °C (on 10 February 1940).

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

SōjaOkayama

coords: 34.68°, 133.75°
period: 1940–2025 · 86 yrs

CfaHumid subtropicalWarmest monthAugustColdest monthJanuaryWettest monthJulyDriest monthDecember

Mean daily temperature

14.9°C

Average daily high

19.6°C

Average daily low

10.3°C

Annual rainfall

1,367mm

Sunshine / day

8.8h

Mean relative humidity

71%

Average peak wind

13.9km/h

Seasonal range

23.4°C

Frost days (< 0 °C)

57 d/yr

Hot days (≥ 30 °C)

47 d/yr

Rainy days (≥ 1 mm)

119 d/yr

Annual snowfall

8.8 cm

Average feels-like high

19.2 °C

Average feels-like low

9.4 °C

Average peak gust

34.5 km/h

Tropical nights (≥ 20 °C)

76 d/yr

Solar radiation

14.8 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+3.0 °C

since 1940

+0.4 °C per decade · r² = 0.72 · 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

40.0 °C

2 August 2001

Coldest day

-11.9 °C

10 February 1940

Wettest day

158 mm

29 September 2004

Windiest day

58.9 km/h

21 August 1970

Strongest gust

157.0 km/h

4 September 1993

Hottest feels-like

43.9 °C

4 August 2001

Coldest feels-like

-16.8 °C

8 February 1940

Snowiest day

24.9 cm

15 February 1968

Sunniest day

14.0 h

21 May 1940

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	38.1 °C2 August 2025	-4.7 °C6 February 2025	15.7 °C	1,257 mm	85	64
2024	36.3 °C29 July 2024	-3.7 °C25 January 2024	16.7 °C	1,787 mm	79	35
2023	37.3 °C13 August 2023	-6.7 °C26 January 2023	16.7 °C	1,300 mm	75	40
2022	36.3 °C15 August 2022	-3.9 °C18 February 2022	16.3 °C	1,040 mm	86	45
2021	36.4 °C5 August 2021	-4.6 °C9 January 2021	16.1 °C	1,755 mm	42	32
2020	36.8 °C16 August 2020	-2.9 °C31 December 2020	16.2 °C	1,555 mm	53	25
2019	35.9 °C13 August 2019	-2.5 °C10 January 2019	16.2 °C	1,285 mm	57	26
2018	36.8 °C24 July 2018	-5.4 °C27 January 2018	15.9 °C	1,653 mm	61	47
2017	36.1 °C24 August 2017	-7.2 °C25 January 2017	15.4 °C	1,402 mm	60	49
2016	36.0 °C8 August 2016	-4.2 °C24 January 2016	16.2 °C	1,721 mm	58	35
2015	34.8 °C31 July 2015	-3.3 °C3 January 2015	15.7 °C	1,610 mm	32	30
2014	35.9 °C25 July 2014	-5.0 °C15 December 2014	15.3 °C	1,497 mm	38	41
2013	38.6 °C11 August 2013	-6.8 °C30 December 2013	16.0 °C	1,598 mm	70	40
2012	34.4 °C26 July 2012	-6.6 °C20 February 2012	15.4 °C	1,324 mm	60	49
2011	34.8 °C13 August 2011	-5.0 °C8 January 2011	15.6 °C	1,541 mm	58	53
2010	37.4 °C21 August 2010	-2.9 °C27 January 2010	16.2 °C	1,323 mm	74	30
2009	34.0 °C22 August 2009	-3.8 °C16 January 2009	16.0 °C	1,195 mm	54	27
2008	37.9 °C2 August 2008	-5.1 °C18 February 2008	15.9 °C	1,258 mm	63	32
2007	37.6 °C18 August 2007	-2.3 °C3 February 2007	16.4 °C	962 mm	69	29
2006	36.7 °C9 August 2006	-4.0 °C9 January 2006	15.6 °C	1,459 mm	54	43
2005	36.2 °C5 August 2005	-5.1 °C22 February 2005	15.7 °C	805 mm	72	56
2004	38.2 °C30 July 2004	-3.9 °C22 January 2004	16.4 °C	1,850 mm	57	42
2003	36.1 °C23 August 2003	-4.4 °C9 January 2003	15.6 °C	1,460 mm	45	42
2002	37.7 °C5 August 2002	-5.1 °C13 February 2002	16.3 °C	959 mm	82	36
2001	40.0 °C2 August 2001	-5.9 °C10 March 2001	15.7 °C	1,253 mm	64	49
2000	37.8 °C12 August 2000	-4.1 °C28 January 2000	15.8 °C	1,132 mm	77	51
1999	34.6 °C11 August 1999	-3.7 °C22 February 1999	15.8 °C	1,279 mm	55	44
1998	37.2 °C5 August 1998	-4.2 °C25 January 1998	16.6 °C	1,402 mm	72	37
1997	37.6 °C2 September 1997	-3.9 °C22 January 1997	15.5 °C	1,375 mm	60	58
1996	39.0 °C3 August 1996	-4.0 °C2 February 1996	15.0 °C	1,212 mm	58	71
1995	39.0 °C19 August 1995	-3.4 °C31 January 1995	15.1 °C	1,121 mm	57	61
1994	39.3 °C4 August 1994	-3.7 °C16 February 1994	16.5 °C	791 mm	79	41
1993	33.2 °C26 August 1993	-3.1 °C22 January 1993	14.9 °C	1,764 mm	15	42
1992	36.5 °C31 July 1992	-3.0 °C6 February 1992	15.4 °C	1,246 mm	52	32
1991	35.2 °C24 July 1991	-3.9 °C26 February 1991	15.6 °C	1,357 mm	46	42
1990	37.6 °C3 August 1990	-6.2 °C2 February 1990	16.3 °C	1,663 mm	77	31
1989	33.8 °C4 August 1989	-3.7 °C16 January 1989	15.4 °C	1,541 mm	50	37
1988	34.0 °C2 August 1988	-3.1 °C22 February 1988	14.6 °C	1,392 mm	29	52
1987	34.4 °C28 July 1987	-4.3 °C27 March 1987	15.4 °C	1,332 mm	55	45
1986	33.8 °C20 August 1986	-4.7 °C17 February 1986	14.5 °C	1,129 mm	41	68
1985	34.6 °C3 September 1985	-4.2 °C31 January 1985	15.0 °C	1,388 mm	54	55
1984	35.6 °C9 August 1984	-8.0 °C4 February 1984	14.6 °C	1,053 mm	56	81
1983	35.8 °C3 August 1983	-3.6 °C9 March 1983	15.1 °C	1,271 mm	46	55
1982	31.8 °C6 August 1982	-7.8 °C9 February 1982	14.6 °C	1,521 mm	26	60
1981	33.9 °C20 July 1981	-10.0 °C4 December 1981	13.9 °C	1,128 mm	42	82
1980	33.1 °C21 July 1980	-6.8 °C17 January 1980	13.9 °C	1,901 mm	10	72
1979	34.6 °C30 July 1979	-7.3 °C7 February 1979	15.0 °C	1,695 mm	39	54
1978	34.2 °C24 July 1978	-9.7 °C17 February 1978	14.8 °C	1,074 mm	63	67
1977	34.9 °C4 August 1977	-8.0 °C16 February 1977	14.8 °C	1,521 mm	43	66
1976	32.9 °C14 August 1976	-5.2 °C27 December 1976	14.0 °C	1,766 mm	29	68
1975	34.8 °C22 July 1975	-8.3 °C24 January 1975	14.8 °C	1,662 mm	41	62
1974	33.6 °C2 August 1974	-10.1 °C12 February 1974	14.4 °C	1,521 mm	41	65
1973	37.1 °C13 August 1973	-3.8 °C31 January 1973	14.8 °C	1,031 mm	53	66
1972	33.7 °C8 August 1972	-4.4 °C18 January 1972	14.5 °C	2,042 mm	38	57
1971	35.5 °C16 July 1971	-5.0 °C11 February 1971	14.5 °C	1,382 mm	41	65
1970	35.4 °C5 August 1970	-5.6 °C26 January 1970	14.2 °C	1,568 mm	46	76
1969	36.1 °C13 August 1969	-4.7 °C15 March 1969	14.4 °C	1,182 mm	51	66
1968	35.1 °C23 July 1968	-9.9 °C18 February 1968	14.2 °C	1,561 mm	29	69
1967	35.3 °C16 August 1967	-5.7 °C16 January 1967	14.6 °C	1,291 mm	62	79
1966	33.4 °C8 August 1966	-4.4 °C8 February 1966	13.5 °C	1,591 mm	24	71
1965	32.5 °C22 August 1965	-5.0 °C31 January 1965	13.0 °C	1,684 mm	25	91
1964	35.4 °C5 August 1964	-4.3 °C13 December 1964	15.3 °C	1,235 mm	63	53
1963	34.2 °C18 July 1963	-5.4 °C24 January 1963	14.2 °C	1,580 mm	46	68
1962	35.2 °C7 August 1962	-4.1 °C31 March 1962	14.5 °C	1,307 mm	51	60
1961	34.6 °C17 July 1961	-4.2 °C17 January 1961	15.4 °C	1,465 mm	63	62
1960	36.2 °C1 August 1960	-5.3 °C27 January 1960	14.9 °C	1,206 mm	49	56
1959	34.2 °C1 August 1959	-4.5 °C17 January 1959	15.4 °C	1,442 mm	57	45
1958	34.9 °C31 July 1958	-4.7 °C4 January 1958	14.9 °C	1,198 mm	45	49
1957	32.9 °C1 August 1957	-4.7 °C11 February 1957	14.1 °C	1,615 mm	30	63
1956	35.4 °C4 August 1956	-4.9 °C19 February 1956	14.1 °C	1,624 mm	45	70
1955	34.5 °C21 July 1955	-4.2 °C12 January 1955	14.8 °C	1,124 mm	57	53
1954	34.3 °C9 August 1954	-5.2 °C23 February 1954	14.6 °C	1,530 mm	29	54
1953	35.5 °C21 August 1953	-3.6 °C10 February 1953	14.6 °C	1,783 mm	35	57
1952	32.3 °C2 August 1952	-5.5 °C6 February 1952	13.4 °C	1,496 mm	17	73
1951	33.2 °C31 July 1951	-4.7 °C15 January 1951	13.5 °C	1,323 mm	31	67
1950	31.4 °C2 August 1950	-4.4 °C21 February 1950	13.6 °C	1,199 mm	8	80
1949	31.6 °C6 August 1949	-4.2 °C17 January 1949	13.2 °C	1,353 mm	13	78
1948	31.1 °C26 July 1948	-3.8 °C30 January 1948	13.9 °C	1,139 mm	6	65
1947	32.8 °C12 August 1947	-5.9 °C4 February 1947	12.6 °C	1,056 mm	35	88
1946	35.7 °C14 July 1946	-5.2 °C13 March 1946	13.9 °C	903 mm	30	87
1945	31.9 °C10 August 1945	-8.1 °C27 February 1945	13.0 °C	1,536 mm	12	96
1944	32.1 °C18 July 1944	-4.7 °C20 January 1944	13.6 °C	928 mm	18	95
1943	32.1 °C15 August 1943	-5.9 °C12 January 1943	13.0 °C	992 mm	4	98
1942	34.0 °C2 August 1942	-7.4 °C26 February 1942	13.4 °C	924 mm	39	86
1941	31.2 °C9 August 1941	-5.6 °C31 January 1941	13.4 °C	1,290 mm	7	83
1940	31.7 °C24 July 1940	-11.9 °C10 February 1940	12.9 °C	870 mm	12	91

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

21.0 °C

+1.4 °C

Hot days (≥ 30 °C)

85 d/yr

+38

Frost days (< 0 °C)

64 d/yr

Annual rainfall

1257 mm

-111 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	8.6 °C	+0.4 °C	11 mm	-27 mm
Feb	7.4 °C	-1.7 °C	29 mm	-24 mm
Mar	14.0 °C	+1.1 °C	110 mm	+23 mm
Apr	20.0 °C	+1.3 °C	52 mm	-65 mm
May	23.3 °C	+0.4 °C	169 mm	+35 mm
Jun	28.4 °C	+2.4 °C	253 mm	+54 mm
Jul	33.9 °C	+4.0 °C	61 mm	-144 mm
Aug	34.2 °C	+2.9 °C	156 mm	+18 mm
Sep	30.0 °C	+2.7 °C	186 mm	-2 mm
Oct	23.4 °C	+1.7 °C	165 mm	+59 mm
Nov	16.8 °C	+0.6 °C	29 mm	-35 mm
Dec	11.4 °C	+0.7 °C	35 mm	-3 mm

The year's extremes

Hottest day

38.1 °C

2 Aug 2025

Coldest day

-4.7 °C

6 Feb 2025

Wettest day

76.8 mm

10 Aug 2025

Windiest day

33.2 km/h

5 Feb 2025

Strongest gust

73.1 km/h

5 Feb 2025

Hottest feels-like

42.9 °C

1 Aug 2025

Coldest feels-like

-10.4 °C

7 Feb 2025

Snowiest day

6.3 cm

1 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 Sōja?

Sōja has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 14.9 °C and it receives 1,367 mm of precipitation per year.

What is the hottest day ever recorded in Sōja?

The hottest day measured in Sōja between 1940 and 2025 was 2 August 2001, reaching 40.0 °C.

What is the coldest day in Sōja?

The coldest day measured in Sōja between 1940 and 2025 was 10 February 1940, at -11.9 °C.

Does it snow in Sōja?

Yes. Sōja gets on average 8.8 cm of snow per year and has around 57 frost days.

Has the climate of Sōja warmed?

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

What is the wettest day in Sōja?

The wettest day measured in Sōja between 1940 and 2025 was 29 September 2004, with 158 mm of rain in 24 hours.

What was the windiest day in Sōja?

The windiest day measured in Sōja between 1940 and 2025 was 21 August 1970, with winds reaching 58.9 km/h.

What is the warmest month in Sōja?

The warmest month in Sōja is August (27.0 °C on average); the coldest is January (3.6 °C).

How much does it rain in Sōja?

Sōja receives on average 1,367 mm of precipitation per year, spread over about 119 rainy days.

Is it sunny in Sōja?

Sōja 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 Sōja?

The heaviest 24-hour snowfall measured in Sōja between 1940 and 2025 was 15 February 1968, with 24.9 cm.

Are there tropical nights in Sōja?

Yes: Sōja has on average 76 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Sōja?

In Sōja, between 1940 and 2025, the highest apparent temperature reached 43.9 °C on 4 August 2001, and the lowest was -16.8 °C on 8 February 1940.

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