Kahoku climate — normals and trends

Q: What is the climate of Kahoku?

Kahoku has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 14.4 °C and it receives 1,817 mm of precipitation per year.

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

The hottest day measured in Kahoku between 1940 and 2025 was 15 August 2019, reaching 40.0 °C.

Q: What is the coldest day in Kahoku?

The coldest day measured in Kahoku between 1940 and 2025 was 29 January 1947, at -11.7 °C.

Q: Does it snow in Kahoku?

Yes. Kahoku gets on average 102.1 cm of snow per year and has around 38 frost days.

Q: Has the climate of Kahoku warmed?

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

Q: What is the wettest day in Kahoku?

The wettest day measured in Kahoku between 1940 and 2025 was 8 August 1977, with 192 mm of rain in 24 hours.

Q: What was the windiest day in Kahoku?

The windiest day measured in Kahoku between 1940 and 2025 was 4 September 2018, with winds reaching 74.5 km/h.

Q: What is the warmest month in Kahoku?

The warmest month in Kahoku is August (27.1 °C on average); the coldest is January (3.0 °C).

Q: How much does it rain in Kahoku?

Kahoku receives on average 1,817 mm of precipitation per year, spread over about 192 rainy days.

Q: Is it sunny in Kahoku?

Kahoku gets on average 8.7 hours of sunshine per day, roughly 3,175 hours per year over 1940-2025.

Kahoku (Japan) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 14.4 °C and it receives 1,817 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 (27.1 °C on average) and the coldest is January (3.0 °C). Rainfall peaks in July.

Kahoku averages 38 frost days, 36 hot days (≥ 30 °C) and 192 rainy days per year.

Kahoku has warmed by +2.7 °C between 1940 and 2025, or +0.31 °C per decade. This trend is statistically significant.

The number of frost days there went from about 64 to 12 per year over the period.

The hottest day of the period reached 40.0 °C (on 15 August 2019) and the coldest -11.7 °C (on 29 January 1947).

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

KahokuIshikawa

coords: 36.76°, 136.71°
period: 1940–2025 · 86 yrs

CfaHumid subtropicalWarmest monthAugustColdest monthJanuaryWettest monthJulyDriest monthMay

Mean daily temperature

14.4°C

Average daily high

17.9°C

Average daily low

11.0°C

Annual rainfall

1,817mm

Sunshine / day

8.7h

Mean relative humidity

74%

Average peak wind

17.5km/h

Seasonal range

24.1°C

Frost days (< 0 °C)

38 d/yr

Hot days (≥ 30 °C)

36 d/yr

Rainy days (≥ 1 mm)

192 d/yr

Annual snowfall

102.1 cm

Average feels-like high

17.3 °C

Average feels-like low

9.8 °C

Average peak gust

39.8 km/h

Tropical nights (≥ 20 °C)

76 d/yr

Solar radiation

14.5 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+2.7 °C

since 1940

+0.3 °C per decade · r² = 0.67 · 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

15 August 2019

Coldest day

-11.7 °C

29 January 1947

Wettest day

192 mm

8 August 1977

Windiest day

74.5 km/h

4 September 2018

Strongest gust

174.6 km/h

28 September 1991

Hottest feels-like

43.9 °C

14 August 2019

Coldest feels-like

-16.6 °C

29 January 1947

Snowiest day

21.1 cm

12 March 1969

Sunniest day

14.0 h

26 May 1940

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	37.7 °C4 August 2025	-4.3 °C21 February 2025	15.9 °C	1,930 mm	79	18
2024	37.8 °C23 August 2024	-2.1 °C14 January 2024	16.4 °C	2,012 mm	70	1
2023	38.5 °C10 August 2023	-4.8 °C25 January 2023	16.5 °C	1,904 mm	67	17
2022	35.6 °C6 September 2022	-4.9 °C7 February 2022	15.7 °C	1,898 mm	55	21
2021	35.1 °C5 August 2021	-4.7 °C21 January 2021	15.7 °C	2,016 mm	37	20
2020	38.1 °C3 September 2020	-2.8 °C7 February 2020	16.0 °C	1,996 mm	46	11
2019	40.0 °C15 August 2019	-1.4 °C27 January 2019	15.8 °C	1,576 mm	42	7
2018	38.5 °C23 August 2018	-6.6 °C14 January 2018	15.6 °C	1,920 mm	60	34
2017	35.1 °C11 July 2017	-4.3 °C25 January 2017	15.0 °C	1,882 mm	37	15
2016	35.5 °C2 July 2016	-3.8 °C22 January 2016	15.9 °C	1,696 mm	50	15
2015	36.6 °C13 July 2015	-4.4 °C2 January 2015	15.7 °C	1,570 mm	35	8
2014	36.2 °C5 August 2014	-4.5 °C11 January 2014	14.9 °C	1,803 mm	31	37
2013	36.4 °C17 August 2013	-5.1 °C31 January 2013	15.2 °C	2,041 mm	44	31
2012	36.1 °C22 August 2012	-5.9 °C30 January 2012	15.0 °C	1,560 mm	62	42
2011	35.7 °C9 August 2011	-8.2 °C31 January 2011	14.9 °C	1,675 mm	59	43
2010	36.8 °C5 August 2010	-7.6 °C4 February 2010	15.4 °C	2,010 mm	56	18
2009	33.7 °C20 August 2009	-3.7 °C28 January 2009	15.1 °C	1,678 mm	20	11
2008	36.2 °C13 August 2008	-5.3 °C28 January 2008	15.3 °C	1,461 mm	46	22
2007	36.0 °C14 August 2007	-1.1 °C7 March 2007	15.4 °C	1,538 mm	37	3
2006	38.2 °C19 August 2006	-5.2 °C5 February 2006	15.0 °C	1,695 mm	43	34
2005	34.9 °C3 August 2005	-8.3 °C27 February 2005	15.1 °C	1,474 mm	51	26
2004	37.3 °C2 August 2004	-8.0 °C10 February 2004	15.8 °C	1,830 mm	46	20
2003	34.3 °C13 September 2003	-5.1 °C3 February 2003	14.7 °C	1,658 mm	22	23
2002	38.0 °C1 September 2002	-4.2 °C25 January 2002	15.2 °C	1,809 mm	49	22
2001	35.4 °C1 August 2001	-6.4 °C17 January 2001	14.9 °C	1,636 mm	42	35
2000	37.1 °C1 September 2000	-6.7 °C17 February 2000	15.0 °C	1,671 mm	57	36
1999	36.6 °C7 August 1999	-8.1 °C9 January 1999	15.1 °C	1,944 mm	39	31
1998	33.6 °C3 July 1998	-4.9 °C30 January 1998	15.6 °C	2,173 mm	27	18
1997	35.0 °C9 August 1997	-6.2 °C31 January 1997	14.7 °C	1,824 mm	35	25
1996	36.8 °C14 August 1996	-5.4 °C25 February 1996	14.1 °C	1,756 mm	34	30
1995	35.5 °C27 August 1995	-6.5 °C17 January 1995	14.2 °C	1,861 mm	37	35
1994	38.0 °C13 August 1994	-4.6 °C30 January 1994	15.7 °C	1,162 mm	58	26
1993	34.3 °C25 July 1993	-4.8 °C23 January 1993	14.3 °C	2,073 mm	8	12
1992	34.2 °C6 August 1992	-3.8 °C21 January 1992	14.8 °C	1,550 mm	33	19
1991	34.0 °C23 July 1991	-3.1 °C9 February 1991	14.9 °C	2,030 mm	27	33
1990	36.6 °C22 August 1990	-9.9 °C26 January 1990	15.8 °C	1,708 mm	55	19
1989	35.3 °C28 July 1989	-2.2 °C29 January 1989	15.0 °C	1,989 mm	29	4
1988	33.0 °C9 August 1988	-6.2 °C22 February 1988	13.9 °C	1,931 mm	20	27
1987	34.7 °C23 July 1987	-6.7 °C20 January 1987	15.0 °C	1,473 mm	31	24
1986	35.6 °C29 August 1986	-8.0 °C12 January 1986	13.8 °C	1,452 mm	33	50
1985	36.1 °C31 August 1985	-7.9 °C15 January 1985	14.3 °C	2,183 mm	51	51
1984	36.2 °C21 August 1984	-7.7 °C25 December 1984	13.7 °C	1,472 mm	41	69
1983	34.8 °C29 August 1983	-6.2 °C26 December 1983	14.4 °C	2,138 mm	30	43
1982	34.3 °C28 August 1982	-6.3 °C18 January 1982	14.6 °C	1,712 mm	12	36
1981	35.2 °C1 August 1981	-5.7 °C28 February 1981	13.9 °C	1,888 mm	35	44
1980	34.1 °C11 September 1980	-5.0 °C7 February 1980	13.9 °C	2,163 mm	9	42
1979	35.1 °C17 August 1979	-6.1 °C3 March 1979	14.9 °C	2,077 mm	28	24
1978	38.5 °C2 August 1978	-8.2 °C2 February 1978	14.9 °C	1,661 mm	63	37
1977	36.1 °C4 August 1977	-7.3 °C3 February 1977	14.5 °C	1,900 mm	23	49
1976	34.0 °C25 July 1976	-7.3 °C22 January 1976	13.7 °C	2,489 mm	19	42
1975	36.0 °C5 August 1975	-8.3 °C18 February 1975	14.5 °C	1,880 mm	43	41
1974	34.5 °C24 August 1974	-7.5 °C28 February 1974	13.7 °C	1,952 mm	31	47
1973	35.6 °C12 August 1973	-6.9 °C10 February 1973	14.5 °C	1,599 mm	51	40
1972	33.7 °C9 August 1972	-7.1 °C2 March 1972	14.6 °C	2,638 mm	36	24
1971	35.9 °C5 August 1971	-9.4 °C2 February 1971	13.8 °C	2,223 mm	24	45
1970	33.8 °C22 August 1970	-8.3 °C20 March 1970	13.7 °C	1,962 mm	40	63
1969	33.3 °C3 August 1969	-7.0 °C2 March 1969	13.8 °C	2,108 mm	32	42
1968	34.4 °C27 July 1968	-5.8 °C27 January 1968	14.0 °C	1,887 mm	26	47
1967	34.3 °C10 August 1967	-10.6 °C17 January 1967	14.1 °C	1,908 mm	41	54
1966	32.9 °C11 August 1966	-8.7 °C22 January 1966	13.3 °C	2,049 mm	31	52
1965	35.7 °C6 August 1965	-6.6 °C3 March 1965	12.8 °C	2,209 mm	18	59
1964	37.0 °C16 August 1964	-4.9 °C19 February 1964	14.7 °C	2,159 mm	39	28
1963	36.3 °C10 August 1963	-4.6 °C25 January 1963	14.2 °C	2,131 mm	38	45
1962	35.4 °C3 August 1962	-5.4 °C14 February 1962	14.5 °C	1,678 mm	41	33
1961	35.2 °C26 August 1961	-6.6 °C12 January 1961	15.1 °C	2,092 mm	51	50
1960	36.3 °C29 August 1960	-5.1 °C13 February 1960	14.7 °C	1,777 mm	39	32
1959	34.4 °C2 August 1959	-5.5 °C8 January 1959	15.0 °C	2,073 mm	32	25
1958	34.4 °C31 July 1958	-6.6 °C4 January 1958	14.6 °C	1,844 mm	26	37
1957	35.9 °C21 August 1957	-6.5 °C22 January 1957	13.9 °C	1,855 mm	25	46
1956	35.0 °C16 August 1956	-7.5 °C18 February 1956	13.8 °C	1,978 mm	35	55
1955	34.3 °C31 July 1955	-4.6 °C13 February 1955	14.8 °C	1,934 mm	48	27
1954	34.6 °C18 August 1954	-4.9 °C31 January 1954	14.4 °C	1,543 mm	34	34
1953	34.3 °C10 August 1953	-7.1 °C9 February 1953	14.1 °C	2,214 mm	20	40
1952	31.7 °C16 July 1952	-8.7 °C18 February 1952	12.7 °C	1,907 mm	12	74
1951	36.7 °C18 August 1951	-10.0 °C15 January 1951	13.2 °C	1,370 mm	33	59
1950	35.1 °C28 July 1950	-7.7 °C24 February 1950	13.7 °C	1,622 mm	39	59
1949	32.9 °C18 July 1949	-7.3 °C17 January 1949	13.3 °C	1,536 mm	22	54
1948	31.0 °C2 September 1948	-5.8 °C23 February 1948	13.7 °C	1,605 mm	10	46
1947	32.2 °C14 August 1947	-11.7 °C29 January 1947	12.1 °C	1,592 mm	22	86
1946	34.6 °C29 July 1946	-7.9 °C18 January 1946	13.4 °C	1,398 mm	33	75
1945	32.2 °C26 August 1945	-8.7 °C26 January 1945	12.5 °C	2,370 mm	18	83
1944	31.6 °C4 August 1944	-9.7 °C9 January 1944	13.1 °C	1,316 mm	13	79
1943	31.9 °C30 August 1943	-8.4 °C10 January 1943	12.9 °C	1,296 mm	16	74
1942	34.5 °C25 July 1942	-11.0 °C13 February 1942	13.3 °C	1,122 mm	47	70
1941	31.7 °C15 August 1941	-10.3 °C9 February 1941	12.8 °C	1,527 mm	11	74
1940	33.0 °C14 July 1940	-8.9 °C25 January 1940	12.7 °C	1,323 mm	14	85

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

19.7 °C

+1.8 °C

Hot days (≥ 30 °C)

79 d/yr

+43

Frost days (< 0 °C)

18 d/yr

-20

Annual rainfall

1930 mm

+113 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	7.3 °C	+1.6 °C	176 mm	+19 mm
Feb	5.5 °C	-0.8 °C	130 mm	+12 mm
Mar	12.1 °C	+1.8 °C	132 mm	+11 mm
Apr	17.3 °C	+0.8 °C	96 mm	-19 mm
May	22.0 °C	+0.6 °C	120 mm	+7 mm
Jun	26.9 °C	+1.9 °C	160 mm	-2 mm
Jul	33.8 °C	+5.0 °C	36 mm	-186 mm
Aug	32.8 °C	+2.0 °C	290 mm	+132 mm
Sep	29.6 °C	+3.5 °C	241 mm	+50 mm
Oct	21.6 °C	+1.3 °C	202 mm	+65 mm
Nov	15.5 °C	+0.8 °C	144 mm	+1 mm
Dec	10.9 °C	+1.8 °C	202 mm	+25 mm

The year's extremes

Hottest day

37.7 °C

4 Aug 2025

Coldest day

-4.3 °C

21 Feb 2025

Wettest day

87.6 mm

10 Aug 2025

Windiest day

39.8 km/h

25 Dec 2025

Strongest gust

83.2 km/h

16 Apr 2025

Hottest feels-like

41.3 °C

25 Jul 2025

Coldest feels-like

-7.8 °C

21 Feb 2025

Snowiest day

9.2 cm

4 Feb 2025

Sunniest day

14.0 h

28 May 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 Kahoku?

Kahoku has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 14.4 °C and it receives 1,817 mm of precipitation per year.

What is the hottest day ever recorded in Kahoku?

The hottest day measured in Kahoku between 1940 and 2025 was 15 August 2019, reaching 40.0 °C.

What is the coldest day in Kahoku?

The coldest day measured in Kahoku between 1940 and 2025 was 29 January 1947, at -11.7 °C.

Does it snow in Kahoku?

Yes. Kahoku gets on average 102.1 cm of snow per year and has around 38 frost days.

Has the climate of Kahoku warmed?

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

What is the wettest day in Kahoku?

The wettest day measured in Kahoku between 1940 and 2025 was 8 August 1977, with 192 mm of rain in 24 hours.

What was the windiest day in Kahoku?

The windiest day measured in Kahoku between 1940 and 2025 was 4 September 2018, with winds reaching 74.5 km/h.

What is the warmest month in Kahoku?

The warmest month in Kahoku is August (27.1 °C on average); the coldest is January (3.0 °C).

How much does it rain in Kahoku?

Kahoku receives on average 1,817 mm of precipitation per year, spread over about 192 rainy days.

Is it sunny in Kahoku?

Kahoku gets on average 8.7 hours of sunshine per day, roughly 3,175 hours per year over 1940-2025.

What is the biggest single-day snowfall in Kahoku?

The heaviest 24-hour snowfall measured in Kahoku between 1940 and 2025 was 12 March 1969, with 21.1 cm.

Are there tropical nights in Kahoku?

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

What was the most extreme apparent temperature in Kahoku?

In Kahoku, between 1940 and 2025, the highest apparent temperature reached 43.9 °C on 14 August 2019, and the lowest was -16.6 °C on 29 January 1947.

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