Morohongō climate — normals and trends

Q: What is the climate of Morohongō?

Morohongō has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 13.3 °C and it receives 1,641 mm of precipitation per year.

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

The hottest day measured in Morohongō between 1940 and 2025 was 15 August 1996, reaching 37.1 °C.

Q: What is the coldest day in Morohongō?

The coldest day measured in Morohongō between 1940 and 2025 was 16 February 1967, at -16.0 °C.

Q: Does it snow in Morohongō?

Yes. Morohongō gets on average 52.9 cm of snow per year and has around 70 frost days.

Q: Has the climate of Morohongō warmed?

Yes: Morohongō warmed by +2.7 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Morohongō?

The wettest day measured in Morohongō between 1940 and 2025 was 26 September 1958, with 261 mm of rain in 24 hours.

Q: What was the windiest day in Morohongō?

The windiest day measured in Morohongō between 1940 and 2025 was 2 August 1982, with winds reaching 54.8 km/h.

Q: What is the warmest month in Morohongō?

The warmest month in Morohongō is August (25.1 °C on average); the coldest is January (1.8 °C).

Q: How much does it rain in Morohongō?

Morohongō receives on average 1,641 mm of precipitation per year, spread over about 166 rainy days.

Q: Is it sunny in Morohongō?

Morohongō gets on average 8.2 hours of sunshine per day, roughly 2,993 hours per year over 1940-2025.

Morohongō (Japan) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 13.3 °C and it receives 1,641 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 (25.1 °C on average) and the coldest is January (1.8 °C). Rainfall peaks in September.

Morohongō averages 70 frost days, 25 hot days (≥ 30 °C) and 166 rainy days per year.

Morohongō has warmed by +2.7 °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 94 to 46 per year over the period.

The hottest day of the period reached 37.1 °C (on 15 August 1996) and the coldest -16.0 °C (on 16 February 1967).

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

MorohongōSaitama

coords: 35.94°, 139.30°
period: 1940–2025 · 86 yrs

CfaHumid subtropicalWarmest monthAugustColdest monthJanuaryWettest monthSeptemberDriest monthJanuary

Mean daily temperature

13.3°C

Average daily high

17.5°C

Average daily low

9.5°C

Annual rainfall

1,641mm

Sunshine / day

8.2h

Mean relative humidity

73%

Average peak wind

11.9km/h

Seasonal range

23.3°C

Frost days (< 0 °C)

70 d/yr

Hot days (≥ 30 °C)

25 d/yr

Rainy days (≥ 1 mm)

166 d/yr

Annual snowfall

52.9 cm

Average feels-like high

17.1 °C

Average feels-like low

8.6 °C

Average peak gust

29.0 km/h

Tropical nights (≥ 20 °C)

62 d/yr

Solar radiation

13.6 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+2.7 °C

since 1940

+0.3 °C per decade · r² = 0.69 · 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

37.1 °C

15 August 1996

Coldest day

-16.0 °C

16 February 1967

Wettest day

261 mm

26 September 1958

Windiest day

54.8 km/h

2 August 1982

Strongest gust

157.0 km/h

27 September 1959

Hottest feels-like

43.7 °C

5 August 2025

Coldest feels-like

-20.8 °C

16 February 1967

Snowiest day

37.5 cm

23 March 1986

Sunniest day

14.0 h

21 June 1941

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	36.9 °C5 August 2025	-4.3 °C10 February 2025	15.1 °C	1,269 mm	74	65
2024	35.8 °C28 July 2024	-4.1 °C29 December 2024	15.6 °C	1,809 mm	61	58
2023	35.7 °C16 July 2023	-6.1 °C26 January 2023	15.7 °C	1,401 mm	69	43
2022	35.6 °C29 June 2022	-3.9 °C7 January 2022	14.7 °C	1,588 mm	46	64
2021	35.1 °C10 August 2021	-4.4 °C10 January 2021	14.7 °C	1,811 mm	29	48
2020	36.2 °C11 August 2020	-4.9 °C7 February 2020	14.7 °C	1,841 mm	40	30
2019	34.6 °C9 September 2019	-3.6 °C10 January 2019	14.8 °C	1,835 mm	34	42
2018	36.4 °C23 July 2018	-8.6 °C25 January 2018	15.1 °C	1,459 mm	52	46
2017	33.6 °C9 August 2017	-3.9 °C16 January 2017	14.0 °C	1,644 mm	31	57
2016	34.5 °C17 August 2016	-10.3 °C20 January 2016	14.5 °C	1,688 mm	28	50
2015	34.8 °C7 August 2015	-4.6 °C18 January 2015	14.6 °C	1,677 mm	32	48
2014	35.6 °C5 August 2014	-6.8 °C5 February 2014	13.9 °C	1,613 mm	27	76
2013	35.7 °C10 August 2013	-8.7 °C17 January 2013	14.2 °C	1,470 mm	34	66
2012	33.3 °C16 July 2012	-7.3 °C27 January 2012	13.5 °C	1,681 mm	41	77
2011	35.2 °C24 June 2011	-4.9 °C16 February 2011	13.9 °C	1,601 mm	38	73
2010	34.4 °C23 July 2010	-4.0 °C20 February 2010	14.3 °C	2,014 mm	48	52
2009	33.5 °C15 July 2009	-7.4 °C25 January 2009	14.2 °C	1,838 mm	12	33
2008	33.4 °C8 August 2008	-5.1 °C4 February 2008	14.0 °C	1,755 mm	22	56
2007	35.1 °C16 August 2007	-4.0 °C25 February 2007	14.3 °C	1,686 mm	35	34
2006	33.5 °C5 August 2006	-5.1 °C5 February 2006	14.1 °C	1,723 mm	17	41
2005	33.6 °C26 August 2005	-10.2 °C2 January 2005	13.8 °C	1,527 mm	34	72
2004	35.8 °C20 July 2004	-7.2 °C23 January 2004	14.8 °C	1,795 mm	43	40
2003	33.0 °C23 August 2003	-7.2 °C6 January 2003	13.4 °C	1,769 mm	20	57
2002	34.9 °C8 August 2002	-5.8 °C28 December 2002	13.9 °C	1,626 mm	35	52
2001	35.6 °C13 July 2001	-11.6 °C30 January 2001	13.6 °C	1,565 mm	30	72
2000	35.1 °C2 September 2000	-6.4 °C28 January 2000	14.2 °C	1,605 mm	39	50
1999	34.2 °C30 July 1999	-7.9 °C14 February 1999	14.3 °C	1,551 mm	33	53
1998	33.7 °C3 July 1998	-11.1 °C25 January 1998	14.1 °C	2,033 mm	18	52
1997	35.6 °C5 July 1997	-9.6 °C10 January 1997	13.8 °C	1,353 mm	27	57
1996	37.1 °C15 August 1996	-10.7 °C20 February 1996	13.2 °C	1,509 mm	25	70
1995	34.8 °C19 August 1995	-8.5 °C6 March 1995	13.6 °C	1,446 mm	35	66
1994	35.2 °C16 August 1994	-13.7 °C31 January 1994	14.1 °C	1,606 mm	48	68
1993	31.6 °C13 May 1993	-5.0 °C22 January 1993	13.0 °C	1,959 mm	9	53
1992	33.8 °C31 July 1992	-6.9 °C23 February 1992	13.5 °C	1,588 mm	30	54
1991	35.4 °C24 July 1991	-9.8 °C31 December 1991	14.0 °C	1,976 mm	24	56
1990	35.0 °C19 July 1990	-11.0 °C28 January 1990	14.4 °C	1,752 mm	39	44
1989	31.9 °C7 August 1989	-7.2 °C29 January 1989	13.6 °C	1,743 mm	10	39
1988	32.1 °C9 July 1988	-6.7 °C7 January 1988	12.7 °C	1,812 mm	11	62
1987	35.5 °C24 July 1987	-9.4 °C15 January 1987	13.6 °C	1,343 mm	36	71
1986	32.6 °C4 September 1986	-12.1 °C26 February 1986	12.4 °C	1,722 mm	15	77
1985	32.7 °C1 September 1985	-13.4 °C31 January 1985	13.0 °C	1,709 mm	32	77
1984	35.5 °C2 September 1984	-14.2 °C9 February 1984	12.0 °C	1,127 mm	33	104
1983	33.8 °C19 August 1983	-9.2 °C23 January 1983	13.0 °C	1,632 mm	21	73
1982	31.6 °C22 August 1982	-10.5 °C21 January 1982	13.2 °C	1,768 mm	7	58
1981	32.7 °C10 July 1981	-13.0 °C27 February 1981	12.3 °C	1,601 mm	21	83
1980	32.0 °C23 July 1980	-10.0 °C7 February 1980	12.5 °C	1,772 mm	4	88
1979	33.0 °C1 August 1979	-13.5 °C16 January 1979	13.9 °C	1,840 mm	21	64
1978	35.1 °C21 August 1978	-10.5 °C16 February 1978	13.2 °C	1,440 mm	45	83
1977	32.5 °C13 July 1977	-14.2 °C17 February 1977	13.1 °C	1,756 mm	13	69
1976	32.2 °C1 August 1976	-10.8 °C28 December 1976	12.5 °C	1,788 mm	14	70
1975	33.2 °C5 August 1975	-9.9 °C17 February 1975	13.0 °C	1,835 mm	30	81
1974	31.7 °C30 July 1974	-13.9 °C27 January 1974	12.6 °C	1,820 mm	15	77
1973	34.0 °C19 August 1973	-5.8 °C13 January 1973	13.3 °C	1,482 mm	34	82
1972	33.5 °C8 August 1972	-7.2 °C8 February 1972	13.5 °C	2,061 mm	20	63
1971	33.3 °C8 July 1971	-9.2 °C6 January 1971	12.8 °C	1,940 mm	19	67
1970	33.2 °C23 July 1970	-13.6 °C6 January 1970	12.5 °C	1,566 mm	27	88
1969	34.0 °C30 July 1969	-9.8 °C1 March 1969	12.9 °C	1,622 mm	18	80
1968	32.4 °C19 July 1968	-12.1 °C25 February 1968	12.9 °C	1,725 mm	11	74
1967	33.1 °C11 August 1967	-16.0 °C16 February 1967	12.9 °C	1,547 mm	26	92
1966	30.8 °C7 August 1966	-7.9 °C6 January 1966	12.3 °C	1,852 mm	7	87
1965	32.8 °C30 July 1965	-11.3 °C31 January 1965	12.0 °C	1,730 mm	7	95
1964	33.3 °C16 August 1964	-8.0 °C14 February 1964	13.2 °C	1,855 mm	29	66
1963	33.6 °C13 August 1963	-9.9 °C5 February 1963	13.0 °C	1,461 mm	21	85
1962	35.3 °C9 August 1962	-7.4 °C27 February 1962	13.2 °C	1,577 mm	32	90
1961	34.8 °C26 July 1961	-5.8 °C3 February 1961	14.0 °C	1,524 mm	33	75
1960	32.4 °C20 July 1960	-10.9 °C18 January 1960	13.4 °C	1,604 mm	23	64
1959	33.3 °C28 August 1959	-11.4 °C7 January 1959	13.6 °C	2,073 mm	21	64
1958	34.6 °C1 August 1958	-13.8 °C31 March 1958	13.2 °C	1,955 mm	20	69
1957	33.1 °C28 July 1957	-12.3 °C12 February 1957	12.8 °C	1,727 mm	17	78
1956	33.6 °C2 August 1956	-13.0 °C26 January 1956	12.7 °C	1,726 mm	20	87
1955	33.7 °C1 August 1955	-7.0 °C12 February 1955	13.7 °C	1,453 mm	25	69
1954	34.0 °C23 August 1954	-13.0 °C27 January 1954	12.9 °C	1,559 mm	17	60
1953	35.3 °C21 August 1953	-12.1 °C23 February 1953	12.8 °C	1,788 mm	15	71
1952	31.6 °C26 August 1952	-15.3 °C6 February 1952	11.5 °C	1,490 mm	10	106
1951	32.4 °C9 August 1951	-14.4 °C14 January 1951	12.0 °C	1,594 mm	13	92
1950	31.1 °C22 July 1950	-9.4 °C21 February 1950	12.4 °C	1,444 mm	12	98
1949	31.0 °C18 July 1949	-7.6 °C30 December 1949	12.2 °C	1,640 mm	5	96
1948	30.2 °C9 September 1948	-6.5 °C7 February 1948	12.7 °C	1,597 mm	1	82
1947	32.1 °C14 August 1947	-9.9 °C4 February 1947	11.3 °C	1,383 mm	15	110
1946	33.7 °C17 July 1946	-11.2 °C4 February 1946	12.3 °C	1,367 mm	12	103
1945	31.2 °C6 August 1945	-14.9 °C24 February 1945	11.7 °C	1,745 mm	5	104
1944	31.6 °C1 July 1944	-6.6 °C20 February 1944	12.5 °C	1,323 mm	9	92
1943	30.6 °C8 August 1943	-9.5 °C2 February 1943	12.0 °C	904 mm	4	98
1942	32.3 °C11 July 1942	-13.8 °C14 February 1942	12.1 °C	1,139 mm	17	96
1941	30.3 °C16 August 1941	-9.5 °C26 January 1941	11.9 °C	1,730 mm	2	92
1940	32.2 °C18 July 1940	-10.7 °C19 February 1940	11.8 °C	1,151 mm	9	100

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

19.9 °C

+2.4 °C

Hot days (≥ 30 °C)

74 d/yr

+49

Frost days (< 0 °C)

65 d/yr

-5

Annual rainfall

1269 mm

-372 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	9.0 °C	+2.3 °C	36 mm	-12 mm
Feb	8.8 °C	+1.4 °C	11 mm	-49 mm
Mar	13.5 °C	+2.5 °C	162 mm	+61 mm
Apr	18.7 °C	+2.0 °C	142 mm	+25 mm
May	21.5 °C	+0.3 °C	191 mm	+44 mm
Jun	27.6 °C	+3.9 °C	138 mm	-70 mm
Jul	31.9 °C	+4.4 °C	101 mm	-114 mm
Aug	32.7 °C	+3.8 °C	102 mm	-95 mm
Sep	28.4 °C	+3.7 °C	196 mm	-32 mm
Oct	19.9 °C	+0.8 °C	119 mm	-67 mm
Nov	15.3 °C	+1.1 °C	22 mm	-64 mm
Dec	10.8 °C	+1.5 °C	49 mm	+1 mm

The year's extremes

Hottest day

36.9 °C

5 Aug 2025

Coldest day

-4.3 °C

10 Feb 2025

Wettest day

49.6 mm

5 Sep 2025

Windiest day

34.5 km/h

13 Feb 2025

Strongest gust

78.1 km/h

13 Feb 2025

Hottest feels-like

43.7 °C

5 Aug 2025

Coldest feels-like

-8.9 °C

23 Feb 2025

Snowiest day

12.8 cm

19 Mar 2025

Sunniest day

14.0 h

28 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 Morohongō?

Morohongō has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 13.3 °C and it receives 1,641 mm of precipitation per year.

What is the hottest day ever recorded in Morohongō?

The hottest day measured in Morohongō between 1940 and 2025 was 15 August 1996, reaching 37.1 °C.

What is the coldest day in Morohongō?

The coldest day measured in Morohongō between 1940 and 2025 was 16 February 1967, at -16.0 °C.

Does it snow in Morohongō?

Yes. Morohongō gets on average 52.9 cm of snow per year and has around 70 frost days.

Has the climate of Morohongō warmed?

Yes: Morohongō warmed by +2.7 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Morohongō?

The wettest day measured in Morohongō between 1940 and 2025 was 26 September 1958, with 261 mm of rain in 24 hours.

What was the windiest day in Morohongō?

The windiest day measured in Morohongō between 1940 and 2025 was 2 August 1982, with winds reaching 54.8 km/h.

What is the warmest month in Morohongō?

The warmest month in Morohongō is August (25.1 °C on average); the coldest is January (1.8 °C).

How much does it rain in Morohongō?

Morohongō receives on average 1,641 mm of precipitation per year, spread over about 166 rainy days.

Is it sunny in Morohongō?

Morohongō gets on average 8.2 hours of sunshine per day, roughly 2,993 hours per year over 1940-2025.

What is the biggest single-day snowfall in Morohongō?

The heaviest 24-hour snowfall measured in Morohongō between 1940 and 2025 was 23 March 1986, with 37.5 cm.

Are there tropical nights in Morohongō?

Yes: Morohongō has on average 62 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Morohongō?

In Morohongō, between 1940 and 2025, the highest apparent temperature reached 43.7 °C on 5 August 2025, and the lowest was -20.8 °C on 16 February 1967.

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