Iga climate — normals and trends

Q: What is the climate of Iga?

Iga has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 14.2 °C and it receives 1,757 mm of precipitation per year.

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

The hottest day measured in Iga between 1940 and 2025 was 18 July 2018, reaching 37.1 °C.

Q: What is the coldest day in Iga?

The coldest day measured in Iga between 1940 and 2025 was 23 February 1947, at -12.6 °C.

Q: Does it snow in Iga?

Yes. Iga gets on average 14.6 cm of snow per year and has around 52 frost days.

Q: Has the climate of Iga warmed?

Yes: Iga warmed by +2.9 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Iga?

The wettest day measured in Iga between 1940 and 2025 was 28 October 1961, with 204 mm of rain in 24 hours.

Q: What was the windiest day in Iga?

The windiest day measured in Iga between 1940 and 2025 was 26 September 1959, with winds reaching 68.3 km/h.

Q: What is the warmest month in Iga?

The warmest month in Iga is August (26.0 °C on average); the coldest is January (3.0 °C).

Q: How much does it rain in Iga?

Iga receives on average 1,757 mm of precipitation per year, spread over about 145 rainy days.

Q: Is it sunny in Iga?

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

Iga (Japan) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 14.2 °C and it receives 1,757 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 (3.0 °C). Rainfall peaks in July.

Iga averages 52 frost days, 37 hot days (≥ 30 °C) and 145 rainy days per year.

Iga has warmed by +2.9 °C between 1940 and 2025, or +0.34 °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 37.1 °C (on 18 July 2018) and the coldest -12.6 °C (on 23 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

IgaMie

coords: 34.76°, 136.13°
period: 1940–2025 · 86 yrs

CfaHumid subtropicalWarmest monthAugustColdest monthJanuaryWettest monthJulyDriest monthJanuary

Mean daily temperature

14.2°C

Average daily high

18.5°C

Average daily low

10.4°C

Annual rainfall

1,757mm

Sunshine / day

8.8h

Mean relative humidity

75%

Average peak wind

14.9km/h

Seasonal range

23.0°C

Frost days (< 0 °C)

52 d/yr

Hot days (≥ 30 °C)

37 d/yr

Rainy days (≥ 1 mm)

145 d/yr

Annual snowfall

14.6 cm

Average feels-like high

17.9 °C

Average feels-like low

9.4 °C

Average peak gust

40.9 km/h

Tropical nights (≥ 20 °C)

72 d/yr

Solar radiation

14.8 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+2.9 °C

since 1940

+0.3 °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

37.1 °C

18 July 2018

Coldest day

-12.6 °C

23 February 1947

Wettest day

204 mm

28 October 1961

Windiest day

68.3 km/h

26 September 1959

Strongest gust

219.6 km/h

26 September 1959

Hottest feels-like

43.0 °C

3 August 2024

Coldest feels-like

-16.6 °C

23 February 1947

Snowiest day

34.7 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	36.4 °C6 August 2025	-3.6 °C8 February 2025	15.8 °C	1,462 mm	82	31
2024	36.1 °C2 August 2024	-2.7 °C9 January 2024	16.5 °C	2,037 mm	75	20
2023	35.8 °C27 July 2023	-5.7 °C26 January 2023	16.2 °C	1,643 mm	76	27
2022	35.6 °C1 July 2022	-4.1 °C2 January 2022	15.6 °C	1,577 mm	64	37
2021	34.6 °C8 August 2021	-3.7 °C27 December 2021	15.8 °C	2,101 mm	41	26
2020	35.9 °C17 August 2020	-2.4 °C10 February 2020	15.8 °C	1,883 mm	49	13
2019	35.3 °C2 August 2019	-2.6 °C10 January 2019	15.8 °C	1,787 mm	49	15
2018	37.1 °C18 July 2018	-5.9 °C28 January 2018	15.8 °C	1,798 mm	57	35
2017	34.6 °C24 August 2017	-4.1 °C14 February 2017	14.9 °C	1,693 mm	56	33
2016	35.2 °C8 August 2016	-4.1 °C25 January 2016	15.9 °C	1,888 mm	50	25
2015	35.8 °C1 August 2015	-3.3 °C4 January 2015	15.5 °C	2,102 mm	39	23
2014	36.4 °C25 July 2014	-3.0 °C20 January 2014	14.8 °C	1,700 mm	32	35
2013	36.3 °C12 August 2013	-2.4 °C6 January 2013	15.2 °C	1,529 mm	59	36
2012	35.2 °C28 July 2012	-4.4 °C3 February 2012	14.5 °C	1,764 mm	42	40
2011	34.9 °C18 August 2011	-4.2 °C12 February 2011	14.9 °C	2,139 mm	49	39
2010	35.2 °C22 July 2010	-2.1 °C27 January 2010	15.3 °C	1,783 mm	64	23
2009	33.4 °C15 July 2009	-1.8 °C25 January 2009	15.1 °C	1,864 mm	32	24
2008	35.7 °C4 August 2008	-2.1 °C25 February 2008	15.1 °C	1,801 mm	48	29
2007	35.9 °C16 August 2007	-3.4 °C5 February 2007	15.3 °C	1,278 mm	41	17
2006	34.8 °C5 August 2006	-3.4 °C4 February 2006	14.7 °C	1,769 mm	42	36
2005	35.0 °C21 July 2005	-3.0 °C2 February 2005	14.8 °C	1,200 mm	56	43
2004	34.2 °C15 July 2004	-3.6 °C27 January 2004	15.6 °C	1,835 mm	53	37
2003	34.0 °C13 September 2003	-4.5 °C29 January 2003	14.5 °C	2,022 mm	33	44
2002	35.9 °C6 August 2002	-5.0 °C13 February 2002	14.9 °C	1,494 mm	52	25
2001	36.7 °C1 August 2001	-7.5 °C30 January 2001	14.7 °C	1,543 mm	48	50
2000	35.8 °C23 July 2000	-2.6 °C26 January 2000	14.8 °C	1,618 mm	54	55
1999	34.6 °C23 July 1999	-7.0 °C14 February 1999	14.8 °C	1,687 mm	35	47
1998	34.7 °C3 July 1998	-3.5 °C25 January 1998	15.6 °C	2,143 mm	42	30
1997	34.9 °C6 July 1997	-6.3 °C6 February 1997	14.5 °C	1,644 mm	42	51
1996	35.6 °C2 August 1996	-8.3 °C20 February 1996	13.9 °C	1,499 mm	40	63
1995	36.9 °C19 August 1995	-3.8 °C28 December 1995	14.2 °C	1,481 mm	46	52
1994	36.7 °C5 August 1994	-3.9 °C19 February 1994	15.4 °C	1,363 mm	63	35
1993	31.7 °C28 July 1993	-3.0 °C15 February 1993	14.0 °C	2,094 mm	14	30
1992	34.7 °C30 July 1992	-3.5 °C2 February 1992	14.5 °C	1,668 mm	31	21
1991	34.5 °C24 July 1991	-3.4 °C25 February 1991	14.8 °C	2,082 mm	39	28
1990	35.3 °C8 August 1990	-5.3 °C2 February 1990	15.3 °C	1,694 mm	58	27
1989	32.8 °C8 August 1989	-2.8 °C16 January 1989	14.6 °C	1,825 mm	24	23
1988	33.2 °C23 August 1988	-3.1 °C3 February 1988	13.8 °C	1,846 mm	18	56
1987	34.3 °C29 August 1987	-2.7 °C28 February 1987	14.7 °C	1,324 mm	43	39
1986	33.1 °C21 August 1986	-4.8 °C30 December 1986	13.8 °C	1,402 mm	35	60
1985	34.5 °C30 July 1985	-4.6 °C31 January 1985	14.2 °C	1,702 mm	41	53
1984	34.0 °C12 August 1984	-7.9 °C12 February 1984	13.5 °C	1,293 mm	39	84
1983	34.5 °C4 August 1983	-2.9 °C23 January 1983	14.3 °C	1,694 mm	36	51
1982	31.8 °C7 August 1982	-7.5 °C11 February 1982	14.0 °C	2,195 mm	15	51
1981	33.7 °C18 July 1981	-7.5 °C31 January 1981	13.3 °C	1,457 mm	29	72
1980	33.2 °C21 July 1980	-7.5 °C23 January 1980	13.4 °C	2,328 mm	8	72
1979	33.8 °C1 August 1979	-3.7 °C20 January 1979	14.6 °C	1,986 mm	40	49
1978	34.9 °C12 August 1978	-6.1 °C26 January 1978	14.3 °C	1,444 mm	56	58
1977	34.7 °C4 August 1977	-9.9 °C12 February 1977	14.4 °C	1,847 mm	32	62
1976	33.1 °C1 August 1976	-3.3 °C21 January 1976	13.6 °C	1,857 mm	21	53
1975	33.0 °C5 August 1975	-5.4 °C25 February 1975	14.1 °C	2,225 mm	34	62
1974	32.5 °C2 August 1974	-4.6 °C12 February 1974	13.6 °C	2,302 mm	27	54
1973	35.5 °C10 August 1973	-3.1 °C25 February 1973	14.0 °C	1,788 mm	44	58
1972	34.1 °C8 August 1972	-4.2 °C9 February 1972	14.2 °C	2,515 mm	29	41
1971	33.6 °C4 July 1971	-4.5 °C2 February 1971	13.6 °C	2,079 mm	32	59
1970	34.3 °C22 July 1970	-4.1 °C20 January 1970	13.4 °C	1,982 mm	30	76
1969	34.4 °C13 August 1969	-8.1 °C14 March 1969	13.6 °C	1,768 mm	43	68
1968	33.5 °C20 July 1968	-9.8 °C21 February 1968	13.5 °C	2,080 mm	23	67
1967	33.5 °C10 August 1967	-5.4 °C16 January 1967	13.9 °C	1,849 mm	45	76
1966	32.9 °C8 August 1966	-4.5 °C8 February 1966	12.9 °C	2,085 mm	23	77
1965	31.8 °C29 July 1965	-6.6 °C31 January 1965	12.4 °C	1,797 mm	16	91
1964	34.3 °C10 August 1964	-6.2 °C27 February 1964	14.6 °C	1,631 mm	48	43
1963	34.1 °C18 July 1963	-5.9 °C15 February 1963	13.9 °C	1,642 mm	38	65
1962	34.6 °C22 July 1962	-3.3 °C17 January 1962	14.0 °C	1,749 mm	42	51
1961	34.1 °C9 July 1961	-3.7 °C21 January 1961	14.9 °C	1,877 mm	51	64
1960	35.1 °C1 August 1960	-3.9 °C25 January 1960	14.5 °C	1,751 mm	39	42
1959	35.6 °C2 August 1959	-4.6 °C18 January 1959	14.9 °C	2,210 mm	45	40
1958	34.6 °C31 July 1958	-3.9 °C4 January 1958	14.3 °C	2,032 mm	34	44
1957	34.7 °C1 August 1957	-4.3 °C9 January 1957	13.7 °C	2,075 mm	22	59
1956	35.4 °C3 August 1956	-4.3 °C2 March 1956	13.8 °C	1,927 mm	39	70
1955	34.2 °C1 August 1955	-4.1 °C28 January 1955	14.5 °C	1,708 mm	48	48
1954	34.0 °C8 August 1954	-4.0 °C23 February 1954	14.2 °C	2,006 mm	29	44
1953	34.8 °C27 July 1953	-7.0 °C23 February 1953	14.0 °C	2,157 mm	26	52
1952	33.2 °C2 August 1952	-7.1 °C9 February 1952	12.7 °C	1,826 mm	18	87
1951	33.5 °C28 July 1951	-10.8 °C16 February 1951	12.8 °C	1,527 mm	30	74
1950	31.9 °C8 July 1950	-5.7 °C17 February 1950	13.0 °C	1,597 mm	7	88
1949	32.4 °C6 August 1949	-3.9 °C18 January 1949	12.7 °C	1,590 mm	7	79
1948	30.9 °C19 August 1948	-3.7 °C19 January 1948	13.3 °C	1,582 mm	5	63
1947	33.4 °C13 August 1947	-12.6 °C23 February 1947	12.0 °C	1,320 mm	34	100
1946	34.2 °C16 July 1946	-9.3 °C12 March 1946	13.1 °C	1,372 mm	19	88
1945	31.7 °C9 August 1945	-8.8 °C27 February 1945	12.3 °C	1,981 mm	7	99
1944	31.1 °C1 July 1944	-5.1 °C18 February 1944	12.9 °C	1,238 mm	15	97
1943	31.8 °C10 August 1943	-5.0 °C13 January 1943	12.5 °C	995 mm	9	99
1942	34.3 °C4 August 1942	-9.7 °C26 February 1942	12.8 °C	1,079 mm	34	94
1941	31.5 °C18 August 1941	-9.6 °C12 February 1941	12.8 °C	1,761 mm	7	84
1940	32.4 °C24 July 1940	-10.6 °C10 February 1940	12.3 °C	1,165 mm	11	97

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

20.3 °C

+1.8 °C

Hot days (≥ 30 °C)

82 d/yr

+45

Frost days (< 0 °C)

31 d/yr

-21

Annual rainfall

1462 mm

-295 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	8.1 °C	+1.2 °C	31 mm	-23 mm
Feb	7.0 °C	-0.7 °C	31 mm	-37 mm
Mar	13.2 °C	+1.5 °C	87 mm	-21 mm
Apr	19.7 °C	+2.2 °C	114 mm	-21 mm
May	22.4 °C	+0.5 °C	243 mm	+80 mm
Jun	27.7 °C	+2.6 °C	207 mm	-36 mm
Jul	32.3 °C	+3.2 °C	81 mm	-168 mm
Aug	33.7 °C	+3.4 °C	143 mm	-41 mm
Sep	30.0 °C	+3.6 °C	185 mm	-47 mm
Oct	22.0 °C	+1.5 °C	236 mm	+60 mm
Nov	15.7 °C	+0.6 °C	36 mm	-55 mm
Dec	11.2 °C	+1.6 °C	66 mm	+12 mm

The year's extremes

Hottest day

36.4 °C

6 Aug 2025

Coldest day

-3.6 °C

8 Feb 2025

Wettest day

80.2 mm

11 Aug 2025

Windiest day

32.1 km/h

17 Mar 2025

Strongest gust

80.3 km/h

15 Apr 2025

Hottest feels-like

42.2 °C

3 Aug 2025

Coldest feels-like

-9.8 °C

8 Feb 2025

Snowiest day

1.1 cm

26 Dec 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 Iga?

Iga has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 14.2 °C and it receives 1,757 mm of precipitation per year.

What is the hottest day ever recorded in Iga?

The hottest day measured in Iga between 1940 and 2025 was 18 July 2018, reaching 37.1 °C.

What is the coldest day in Iga?

The coldest day measured in Iga between 1940 and 2025 was 23 February 1947, at -12.6 °C.

Does it snow in Iga?

Yes. Iga gets on average 14.6 cm of snow per year and has around 52 frost days.

Has the climate of Iga warmed?

Yes: Iga warmed by +2.9 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Iga?

The wettest day measured in Iga between 1940 and 2025 was 28 October 1961, with 204 mm of rain in 24 hours.

What was the windiest day in Iga?

The windiest day measured in Iga between 1940 and 2025 was 26 September 1959, with winds reaching 68.3 km/h.

What is the warmest month in Iga?

The warmest month in Iga is August (26.0 °C on average); the coldest is January (3.0 °C).

How much does it rain in Iga?

Iga receives on average 1,757 mm of precipitation per year, spread over about 145 rainy days.

Is it sunny in Iga?

Iga 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 Iga?

The heaviest 24-hour snowfall measured in Iga between 1940 and 2025 was 15 February 1968, with 34.7 cm.

Are there tropical nights in Iga?

Yes: Iga has on average 72 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Iga?

In Iga, between 1940 and 2025, the highest apparent temperature reached 43.0 °C on 3 August 2024, and the lowest was -16.6 °C on 23 February 1947.

Compare Iga with another city

Pick a second city: its normals will be set against these, indicator by indicator.

Nearby cities

The climate around Iga

Other cities — Japan

All cities in Japan →