Okazaki climate — normals and trends

Q: What is the climate of Okazaki?

Okazaki has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 14.4 °C and it receives 1,930 mm of precipitation per year.

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

The hottest day measured in Okazaki between 1940 and 2025 was 12 August 2013, reaching 37.8 °C.

Q: What is the coldest day in Okazaki?

The coldest day measured in Okazaki between 1940 and 2025 was 19 February 1947, at -11.1 °C.

Q: Does it snow in Okazaki?

Yes. Okazaki gets on average 6.8 cm of snow per year and has around 52 frost days.

Q: Has the climate of Okazaki warmed?

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

Q: What is the wettest day in Okazaki?

The wettest day measured in Okazaki between 1940 and 2025 was 2 June 2023, with 165 mm of rain in 24 hours.

Q: What was the windiest day in Okazaki?

The windiest day measured in Okazaki between 1940 and 2025 was 26 September 1959, with winds reaching 90.2 km/h.

Q: What is the warmest month in Okazaki?

The warmest month in Okazaki is August (26.0 °C on average); the coldest is January (3.2 °C).

Q: How much does it rain in Okazaki?

Okazaki receives on average 1,930 mm of precipitation per year, spread over about 148 rainy days.

Q: Is it sunny in Okazaki?

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

Okazaki (Japan) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 14.4 °C and it receives 1,930 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 (26.0 °C on average) and the coldest is January (3.2 °C). Rainfall peaks in July.

Okazaki averages 52 frost days, 34 hot days (≥ 30 °C) and 148 rainy days per year.

Okazaki 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 83 to 21 per year over the period.

The hottest day of the period reached 37.8 °C (on 12 August 2013) and the coldest -11.1 °C (on 19 February 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

OkazakiAichi

coords: 34.95°, 137.17°
period: 1940–2025 · 86 yrs

CfaHumid subtropicalWarmest monthAugustColdest monthJanuaryWettest monthJulyDriest monthJanuary

Mean daily temperature

14.4°C

Average daily high

18.8°C

Average daily low

10.5°C

Annual rainfall

1,930mm

Sunshine / day

8.8h

Mean relative humidity

74%

Average peak wind

16.3km/h

Seasonal range

22.8°C

Frost days (< 0 °C)

52 d/yr

Hot days (≥ 30 °C)

34 d/yr

Rainy days (≥ 1 mm)

148 d/yr

Annual snowfall

6.8 cm

Average feels-like high

18.2 °C

Average feels-like low

9.3 °C

Average peak gust

39.5 km/h

Tropical nights (≥ 20 °C)

74 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 = 0.70 · 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

37.8 °C

12 August 2013

Coldest day

-11.1 °C

19 February 1947

Wettest day

165 mm

2 June 2023

Windiest day

90.2 km/h

26 September 1959

Strongest gust

220.7 km/h

26 September 1959

Hottest feels-like

43.3 °C

16 August 2007

Coldest feels-like

-16.3 °C

19 February 1947

Snowiest day

19.9 cm

15 February 1968

Sunniest day

14.0 h

10 June 1940

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	37.2 °C2 August 2025	-2.7 °C23 February 2025	15.9 °C	1,669 mm	78	36
2024	36.6 °C4 August 2024	-2.4 °C9 January 2024	16.8 °C	2,416 mm	71	22
2023	35.6 °C18 July 2023	-3.9 °C25 January 2023	16.5 °C	1,829 mm	71	26
2022	37.3 °C1 July 2022	-2.0 °C19 December 2022	16.0 °C	1,723 mm	63	33
2021	36.3 °C8 August 2021	-4.7 °C27 December 2021	16.1 °C	2,407 mm	39	26
2020	37.4 °C18 August 2020	-3.1 °C7 February 2020	16.1 °C	2,374 mm	47	9
2019	35.0 °C1 August 2019	-2.8 °C10 January 2019	16.2 °C	2,005 mm	50	15
2018	37.4 °C23 July 2018	-3.2 °C12 January 2018	16.1 °C	2,182 mm	51	35
2017	34.7 °C1 August 2017	-2.9 °C15 January 2017	15.3 °C	1,623 mm	57	28
2016	36.5 °C8 August 2016	-3.8 °C25 January 2016	16.2 °C	2,106 mm	51	29
2015	36.0 °C1 August 2015	-2.4 °C29 January 2015	15.8 °C	2,148 mm	38	26
2014	36.1 °C25 July 2014	-6.2 °C19 December 2014	15.0 °C	1,851 mm	31	41
2013	37.8 °C12 August 2013	-3.4 °C17 February 2013	15.3 °C	1,647 mm	54	37
2012	35.1 °C26 July 2012	-8.9 °C3 February 2012	14.6 °C	1,703 mm	42	52
2011	34.4 °C18 August 2011	-4.8 °C27 December 2011	14.9 °C	2,243 mm	47	55
2010	35.5 °C22 July 2010	-2.5 °C27 January 2010	15.5 °C	2,263 mm	57	30
2009	35.7 °C8 September 2009	-2.5 °C25 January 2009	15.4 °C	1,986 mm	37	23
2008	35.7 °C4 August 2008	-2.5 °C22 January 2008	15.2 °C	1,776 mm	45	35
2007	36.1 °C16 August 2007	-1.7 °C7 March 2007	15.5 °C	1,434 mm	37	15
2006	34.9 °C5 August 2006	-3.8 °C4 February 2006	15.2 °C	1,898 mm	37	33
2005	34.9 °C28 June 2005	-4.9 °C20 December 2005	15.0 °C	1,343 mm	52	48
2004	35.4 °C28 July 2004	-4.7 °C24 January 2004	15.9 °C	2,199 mm	46	30
2003	33.9 °C3 September 2003	-4.2 °C29 January 2003	14.8 °C	2,181 mm	31	44
2002	35.8 °C6 August 2002	-2.8 °C4 January 2002	15.2 °C	1,543 mm	58	24
2001	37.4 °C1 August 2001	-7.8 °C30 January 2001	14.9 °C	1,567 mm	46	44
2000	35.4 °C23 July 2000	-3.5 °C27 January 2000	15.0 °C	1,911 mm	41	51
1999	32.9 °C23 August 1999	-4.9 °C4 February 1999	15.1 °C	1,862 mm	33	40
1998	34.7 °C3 July 1998	-3.9 °C25 January 1998	15.8 °C	2,295 mm	38	23
1997	34.2 °C6 July 1997	-4.9 °C22 January 1997	14.8 °C	1,828 mm	35	47
1996	34.2 °C18 July 1996	-10.1 °C20 February 1996	14.0 °C	1,631 mm	36	61
1995	37.5 °C19 August 1995	-3.1 °C27 December 1995	14.3 °C	1,576 mm	44	57
1994	37.3 °C15 July 1994	-4.1 °C19 February 1994	15.6 °C	1,564 mm	63	46
1993	31.2 °C31 July 1993	-3.2 °C15 February 1993	14.2 °C	2,140 mm	8	34
1992	34.1 °C30 July 1992	-3.2 °C3 February 1992	14.8 °C	1,835 mm	34	26
1991	34.4 °C1 August 1991	-3.3 °C25 February 1991	15.1 °C	2,377 mm	37	31
1990	36.4 °C4 August 1990	-3.1 °C2 February 1990	15.6 °C	2,007 mm	49	22
1989	32.3 °C19 August 1989	-2.9 °C29 January 1989	14.9 °C	2,019 mm	22	23
1988	32.7 °C22 August 1988	-2.9 °C4 February 1988	14.0 °C	1,920 mm	22	50
1987	34.1 °C29 August 1987	-5.0 °C14 January 1987	15.0 °C	1,740 mm	41	37
1986	32.6 °C2 September 1986	-4.2 °C17 February 1986	13.9 °C	1,700 mm	30	58
1985	33.1 °C26 July 1985	-4.3 °C31 January 1985	14.3 °C	1,953 mm	29	56
1984	33.8 °C7 August 1984	-8.6 °C8 February 1984	13.8 °C	1,316 mm	39	77
1983	34.7 °C14 August 1983	-3.4 °C23 January 1983	14.4 °C	1,969 mm	32	48
1982	30.7 °C25 August 1982	-4.2 °C31 January 1982	14.3 °C	2,173 mm	10	47
1981	33.7 °C18 July 1981	-8.9 °C29 January 1981	13.3 °C	1,717 mm	28	73
1980	32.3 °C21 July 1980	-9.0 °C17 February 1980	13.5 °C	2,505 mm	7	74
1979	33.2 °C31 July 1979	-3.8 °C20 January 1979	14.7 °C	2,210 mm	30	49
1978	33.9 °C7 July 1978	-8.1 °C2 February 1978	14.3 °C	1,883 mm	46	55
1977	34.0 °C4 August 1977	-5.3 °C16 February 1977	14.6 °C	2,045 mm	27	58
1976	33.3 °C22 August 1976	-3.6 °C24 January 1976	13.7 °C	2,292 mm	15	50
1975	32.6 °C18 July 1975	-7.5 °C1 March 1975	14.2 °C	2,482 mm	27	60
1974	32.4 °C30 August 1974	-4.0 °C12 February 1974	13.9 °C	2,364 mm	27	54
1973	35.0 °C10 August 1973	-3.5 °C25 December 1973	14.1 °C	2,153 mm	37	57
1972	34.0 °C8 August 1972	-2.7 °C20 December 1972	14.6 °C	2,826 mm	33	41
1971	32.7 °C8 August 1971	-4.5 °C2 February 1971	13.9 °C	2,266 mm	25	58
1970	34.0 °C6 August 1970	-3.9 °C10 February 1970	13.6 °C	1,978 mm	29	65
1969	34.1 °C13 August 1969	-3.9 °C6 February 1969	13.9 °C	2,133 mm	27	58
1968	33.4 °C22 July 1968	-10.4 °C21 February 1968	13.7 °C	2,116 mm	17	64
1967	33.7 °C16 July 1967	-5.9 °C17 January 1967	14.1 °C	1,967 mm	38	76
1966	32.7 °C7 August 1966	-5.1 °C22 January 1966	13.1 °C	2,103 mm	19	77
1965	32.1 °C21 August 1965	-4.2 °C17 January 1965	12.6 °C	1,830 mm	17	98
1964	34.1 °C20 August 1964	-3.0 °C6 February 1964	14.8 °C	1,747 mm	51	47
1963	34.6 °C18 July 1963	-7.7 °C14 February 1963	14.0 °C	1,700 mm	33	70
1962	34.1 °C22 July 1962	-3.2 °C14 February 1962	14.2 °C	2,259 mm	39	56
1961	33.9 °C9 July 1961	-3.8 °C2 February 1961	15.1 °C	2,072 mm	44	61
1960	35.2 °C1 August 1960	-4.2 °C25 January 1960	14.7 °C	1,751 mm	36	46
1959	34.7 °C1 August 1959	-4.1 °C18 January 1959	15.0 °C	2,345 mm	38	40
1958	33.9 °C1 August 1958	-4.3 °C4 January 1958	14.4 °C	2,010 mm	25	42
1957	33.7 °C1 August 1957	-4.3 °C9 January 1957	13.9 °C	2,242 mm	20	63
1956	35.3 °C2 August 1956	-3.7 °C9 January 1956	14.0 °C	2,155 mm	29	66
1955	34.2 °C8 August 1955	-4.3 °C12 February 1955	14.7 °C	1,971 mm	44	49
1954	34.3 °C9 August 1954	-4.0 °C14 March 1954	14.3 °C	2,003 mm	24	50
1953	33.9 °C21 August 1953	-10.5 °C23 February 1953	14.1 °C	2,367 mm	24	52
1952	32.8 °C2 August 1952	-6.3 °C6 February 1952	12.9 °C	1,827 mm	15	89
1951	34.1 °C28 July 1951	-9.6 °C16 February 1951	13.0 °C	1,773 mm	25	80
1950	31.4 °C8 July 1950	-6.2 °C16 February 1950	13.2 °C	1,746 mm	5	88
1949	32.2 °C6 August 1949	-3.7 °C17 January 1949	12.8 °C	1,609 mm	8	81
1948	30.4 °C27 July 1948	-3.9 °C7 February 1948	13.4 °C	1,707 mm	3	76
1947	32.9 °C13 August 1947	-11.1 °C19 February 1947	12.1 °C	1,495 mm	30	104
1946	34.4 °C17 July 1946	-6.9 °C12 March 1946	13.3 °C	1,431 mm	21	92
1945	31.3 °C9 August 1945	-10.2 °C1 February 1945	12.5 °C	2,252 mm	7	99
1944	31.1 °C4 August 1944	-5.4 °C2 February 1944	13.1 °C	1,346 mm	10	99
1943	31.2 °C15 August 1943	-4.9 °C29 January 1943	12.8 °C	1,047 mm	8	93
1942	34.1 °C4 August 1942	-9.4 °C14 February 1942	13.1 °C	1,120 mm	30	89
1941	31.6 °C18 August 1941	-5.5 °C2 February 1941	13.1 °C	1,947 mm	7	84
1940	31.3 °C24 July 1940	-7.9 °C10 February 1940	12.5 °C	1,280 mm	5	99

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

20.6 °C

+1.8 °C

Hot days (≥ 30 °C)

78 d/yr

+44

Frost days (< 0 °C)

36 d/yr

-16

Annual rainfall

1669 mm

-261 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	8.8 °C	+1.3 °C	32 mm	-20 mm
Feb	7.8 °C	-0.8 °C	27 mm	-45 mm
Mar	14.3 °C	+1.9 °C	141 mm	+14 mm
Apr	19.7 °C	+1.9 °C	113 mm	-42 mm
May	22.7 °C	+0.6 °C	226 mm	+45 mm
Jun	27.5 °C	+2.4 °C	301 mm	+38 mm
Jul	32.0 °C	+3.3 °C	138 mm	-148 mm
Aug	33.3 °C	+3.2 °C	155 mm	-58 mm
Sep	29.6 °C	+3.0 °C	272 mm	+27 mm
Oct	22.5 °C	+1.4 °C	168 mm	-8 mm
Nov	16.1 °C	+0.5 °C	38 mm	-62 mm
Dec	11.6 °C	+1.6 °C	59 mm	+0 mm

The year's extremes

Hottest day

37.2 °C

2 Aug 2025

Coldest day

-2.7 °C

23 Feb 2025

Wettest day

84.1 mm

11 Aug 2025

Windiest day

35.8 km/h

13 Feb 2025

Strongest gust

88.2 km/h

25 May 2025

Hottest feels-like

43.1 °C

3 Aug 2025

Coldest feels-like

-8.2 °C

8 Feb 2025

Snowiest day

1.7 cm

19 Mar 2025

Sunniest day

14.0 h

5 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 Okazaki?

Okazaki has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 14.4 °C and it receives 1,930 mm of precipitation per year.

What is the hottest day ever recorded in Okazaki?

The hottest day measured in Okazaki between 1940 and 2025 was 12 August 2013, reaching 37.8 °C.

What is the coldest day in Okazaki?

The coldest day measured in Okazaki between 1940 and 2025 was 19 February 1947, at -11.1 °C.

Does it snow in Okazaki?

Yes. Okazaki gets on average 6.8 cm of snow per year and has around 52 frost days.

Has the climate of Okazaki warmed?

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

What is the wettest day in Okazaki?

The wettest day measured in Okazaki between 1940 and 2025 was 2 June 2023, with 165 mm of rain in 24 hours.

What was the windiest day in Okazaki?

The windiest day measured in Okazaki between 1940 and 2025 was 26 September 1959, with winds reaching 90.2 km/h.

What is the warmest month in Okazaki?

The warmest month in Okazaki is August (26.0 °C on average); the coldest is January (3.2 °C).

How much does it rain in Okazaki?

Okazaki receives on average 1,930 mm of precipitation per year, spread over about 148 rainy days.

Is it sunny in Okazaki?

Okazaki 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 Okazaki?

The heaviest 24-hour snowfall measured in Okazaki between 1940 and 2025 was 15 February 1968, with 19.9 cm.

Are there tropical nights in Okazaki?

Yes: Okazaki has on average 74 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Okazaki?

In Okazaki, between 1940 and 2025, the highest apparent temperature reached 43.3 °C on 16 August 2007, and the lowest was -16.3 °C on 19 February 1947.

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