Nagahama climate — normals and trends

Q: What is the climate of Nagahama?

Nagahama has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 12.9 °C and it receives 2,046 mm of precipitation per year.

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

The hottest day measured in Nagahama between 1940 and 2025 was 5 August 2018, reaching 35.2 °C.

Q: What is the coldest day in Nagahama?

The coldest day measured in Nagahama between 1940 and 2025 was 12 February 1941, at -12.4 °C.

Q: Does it snow in Nagahama?

Yes. Nagahama gets on average 94.9 cm of snow per year and has around 61 frost days.

Q: Has the climate of Nagahama warmed?

Yes: Nagahama warmed by +2.8 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Nagahama?

The wettest day measured in Nagahama between 1940 and 2025 was 25 June 1985, with 173 mm of rain in 24 hours.

Q: What was the windiest day in Nagahama?

The windiest day measured in Nagahama between 1940 and 2025 was 4 September 2018, with winds reaching 54.6 km/h.

Q: What is the warmest month in Nagahama?

The warmest month in Nagahama is August (25.1 °C on average); the coldest is January (1.5 °C).

Q: How much does it rain in Nagahama?

Nagahama receives on average 2,046 mm of precipitation per year, spread over about 189 rainy days.

Q: Is it sunny in Nagahama?

Nagahama gets on average 8.6 hours of sunshine per day, roughly 3,139 hours per year over 1940-2025.

Nagahama (Japan) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 12.9 °C and it receives 2,046 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 (1.5 °C). Rainfall peaks in July.

Nagahama averages 61 frost days, 20 hot days (≥ 30 °C) and 189 rainy days per year.

Nagahama has warmed by +2.8 °C between 1940 and 2025, or +0.33 °C per decade. This trend is statistically significant.

The number of frost days there went from about 89 to 33 per year over the period.

The hottest day of the period reached 35.2 °C (on 5 August 2018) and the coldest -12.4 °C (on 12 February 1941).

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

NagahamaShiga

coords: 35.38°, 136.27°
period: 1940–2025 · 86 yrs

CfaHumid subtropicalWarmest monthAugustColdest monthJanuaryWettest monthJulyDriest monthFebruary

Mean daily temperature

12.9°C

Average daily high

16.6°C

Average daily low

9.7°C

Annual rainfall

2,046mm

Sunshine / day

8.6h

Mean relative humidity

79%

Average peak wind

14.6km/h

Seasonal range

23.6°C

Frost days (< 0 °C)

61 d/yr

Hot days (≥ 30 °C)

20 d/yr

Rainy days (≥ 1 mm)

189 d/yr

Annual snowfall

94.9 cm

Average feels-like high

16.0 °C

Average feels-like low

8.5 °C

Average peak gust

43.4 km/h

Tropical nights (≥ 20 °C)

63 d/yr

Solar radiation

14.2 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+2.8 °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

35.2 °C

5 August 2018

Coldest day

-12.4 °C

12 February 1941

Wettest day

173 mm

25 June 1985

Windiest day

54.6 km/h

4 September 2018

Strongest gust

182.2 km/h

4 September 2018

Hottest feels-like

42.7 °C

30 July 2025

Coldest feels-like

-16.4 °C

16 January 1963

Snowiest day

26.4 cm

15 February 1968

Sunniest day

14.0 h

13 June 1940

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	34.5 °C30 July 2025	-4.1 °C12 February 2025	14.4 °C	1,878 mm	70	47
2024	34.8 °C7 July 2024	-2.6 °C21 December 2024	15.2 °C	2,325 mm	58	24
2023	34.2 °C27 July 2023	-6.4 °C26 January 2023	15.0 °C	2,177 mm	53	25
2022	34.3 °C1 August 2022	-5.7 °C25 February 2022	14.4 °C	1,812 mm	35	55
2021	34.0 °C5 August 2021	-5.9 °C10 January 2021	14.6 °C	2,414 mm	25	33
2020	34.0 °C11 August 2020	-2.7 °C7 February 2020	14.6 °C	2,343 mm	35	14
2019	34.1 °C8 August 2019	-2.2 °C10 January 2019	14.7 °C	1,758 mm	31	9
2018	35.2 °C5 August 2018	-9.5 °C9 February 2018	14.4 °C	2,316 mm	38	52
2017	32.4 °C24 August 2017	-5.5 °C26 January 2017	13.6 °C	2,054 mm	23	37
2016	32.6 °C7 August 2016	-7.2 °C26 January 2016	14.6 °C	1,978 mm	29	28
2015	34.4 °C2 August 2015	-3.4 °C11 February 2015	14.3 °C	2,155 mm	25	27
2014	32.9 °C20 August 2014	-5.0 °C28 December 2014	13.6 °C	1,907 mm	12	52
2013	33.0 °C11 July 2013	-4.8 °C28 January 2013	13.7 °C	2,011 mm	31	46
2012	33.3 °C28 July 2012	-8.2 °C19 February 2012	13.3 °C	1,896 mm	34	67
2011	32.9 °C8 August 2011	-6.4 °C31 January 2011	13.6 °C	2,229 mm	32	71
2010	33.1 °C26 July 2010	-3.8 °C18 January 2010	14.0 °C	2,174 mm	46	42
2009	31.5 °C12 August 2009	-3.3 °C25 January 2009	13.8 °C	1,972 mm	8	31
2008	33.5 °C26 July 2008	-4.1 °C17 February 2008	13.9 °C	1,638 mm	29	40
2007	33.2 °C15 August 2007	-3.1 °C5 February 2007	14.0 °C	1,736 mm	21	17
2006	33.1 °C15 August 2006	-8.8 °C9 January 2006	13.6 °C	2,028 mm	27	42
2005	32.6 °C3 August 2005	-6.4 °C14 March 2005	13.5 °C	1,557 mm	27	57
2004	32.7 °C8 July 2004	-6.0 °C11 February 2004	14.4 °C	2,137 mm	23	45
2003	32.4 °C13 September 2003	-7.9 °C9 January 2003	13.3 °C	2,295 mm	14	46
2002	33.9 °C6 August 2002	-5.3 °C14 February 2002	13.6 °C	1,913 mm	27	43
2001	33.3 °C1 August 2001	-8.0 °C20 January 2001	13.3 °C	1,791 mm	24	65
2000	33.9 °C23 July 2000	-6.6 °C11 February 2000	13.5 °C	1,884 mm	31	63
1999	33.2 °C23 July 1999	-8.8 °C5 February 1999	13.6 °C	1,855 mm	13	61
1998	33.5 °C3 July 1998	-6.5 °C30 January 1998	14.3 °C	2,121 mm	15	36
1997	32.4 °C6 July 1997	-6.1 °C22 January 1997	13.2 °C	2,027 mm	20	57
1996	33.6 °C17 July 1996	-9.0 °C20 February 1996	12.4 °C	1,994 mm	25	76
1995	33.9 °C27 August 1995	-9.0 °C28 December 1995	12.7 °C	2,091 mm	34	61
1994	34.0 °C7 August 1994	-6.0 °C24 January 1994	14.2 °C	1,400 mm	49	52
1993	30.4 °C26 August 1993	-5.4 °C15 February 1993	12.8 °C	2,529 mm	1	46
1992	32.6 °C30 July 1992	-6.7 °C27 February 1992	13.3 °C	1,596 mm	19	39
1991	33.3 °C23 July 1991	-7.6 °C26 February 1991	13.6 °C	2,319 mm	15	49
1990	33.1 °C18 July 1990	-6.1 °C26 January 1990	14.2 °C	1,997 mm	27	36
1989	31.0 °C8 August 1989	-2.3 °C28 January 1989	13.6 °C	2,196 mm	5	20
1988	31.5 °C22 August 1988	-7.5 °C20 February 1988	12.5 °C	2,058 mm	9	62
1987	31.8 °C30 August 1987	-7.3 °C28 February 1987	13.4 °C	1,797 mm	18	52
1986	32.8 °C30 July 1986	-8.0 °C8 February 1986	12.4 °C	1,966 mm	16	67
1985	32.6 °C31 July 1985	-8.0 °C31 January 1985	12.8 °C	2,371 mm	29	63
1984	33.0 °C12 August 1984	-7.3 °C9 January 1984	12.3 °C	1,636 mm	25	92
1983	32.5 °C5 August 1983	-7.6 °C28 December 1983	12.9 °C	2,266 mm	24	64
1982	30.3 °C7 August 1982	-9.0 °C31 January 1982	12.9 °C	2,032 mm	1	56
1981	31.9 °C19 July 1981	-7.5 °C28 February 1981	12.1 °C	1,903 mm	18	71
1980	31.8 °C21 July 1980	-6.5 °C17 February 1980	12.2 °C	2,476 mm	2	74
1979	33.0 °C1 August 1979	-7.0 °C20 January 1979	13.5 °C	2,226 mm	19	48
1978	33.9 °C12 August 1978	-6.9 °C16 February 1978	13.2 °C	1,855 mm	41	67
1977	34.0 °C4 August 1977	-8.2 °C3 February 1977	13.1 °C	2,186 mm	19	69
1976	31.2 °C21 August 1976	-7.9 °C30 December 1976	12.3 °C	2,519 mm	8	67
1975	32.8 °C5 August 1975	-7.0 °C27 February 1975	12.9 °C	2,563 mm	19	73
1974	31.1 °C30 July 1974	-6.2 °C27 January 1974	12.3 °C	2,360 mm	13	72
1973	32.6 °C18 July 1973	-7.7 °C25 December 1973	12.8 °C	1,907 mm	22	76
1972	32.2 °C5 August 1972	-5.9 °C25 February 1972	13.1 °C	3,131 mm	19	50
1971	32.2 °C29 July 1971	-7.1 °C2 February 1971	12.4 °C	2,572 mm	14	71
1970	33.2 °C22 July 1970	-8.2 °C20 January 1970	12.1 °C	2,190 mm	17	91
1969	31.8 °C30 July 1969	-7.3 °C16 January 1969	12.3 °C	2,273 mm	12	81
1968	32.2 °C20 July 1968	-7.6 °C21 February 1968	12.4 °C	2,245 mm	13	76
1967	32.5 °C10 August 1967	-9.0 °C11 January 1967	12.7 °C	2,053 mm	26	82
1966	30.3 °C6 August 1966	-8.6 °C29 December 1966	11.7 °C	2,430 mm	4	83
1965	30.6 °C29 July 1965	-8.2 °C26 January 1965	11.1 °C	2,341 mm	5	99
1964	32.7 °C4 August 1964	-6.8 °C1 March 1964	13.4 °C	1,884 mm	33	52
1963	31.8 °C2 August 1963	-11.3 °C16 January 1963	12.5 °C	2,055 mm	17	73
1962	33.1 °C8 August 1962	-6.1 °C17 January 1962	12.8 °C	2,071 mm	15	57
1961	33.0 °C13 August 1961	-7.7 °C21 January 1961	13.5 °C	2,362 mm	27	66
1960	33.5 °C2 August 1960	-5.8 °C26 January 1960	13.3 °C	1,889 mm	23	51
1959	34.4 °C2 August 1959	-7.7 °C21 January 1959	13.8 °C	2,350 mm	25	44
1958	32.9 °C31 July 1958	-8.5 °C31 March 1958	13.1 °C	2,054 mm	14	52
1957	32.9 °C1 August 1957	-6.5 °C25 January 1957	12.4 °C	2,316 mm	12	73
1956	32.8 °C1 August 1956	-7.5 °C24 February 1956	12.4 °C	2,407 mm	26	76
1955	33.4 °C31 July 1955	-7.0 °C9 January 1955	13.4 °C	1,979 mm	27	55
1954	32.5 °C15 August 1954	-7.5 °C23 February 1954	13.0 °C	1,955 mm	14	52
1953	33.1 °C27 July 1953	-7.3 °C31 January 1953	12.7 °C	2,626 mm	11	58
1952	30.6 °C2 August 1952	-7.5 °C19 January 1952	11.4 °C	2,064 mm	2	89
1951	31.6 °C14 August 1951	-10.2 °C16 January 1951	11.6 °C	1,775 mm	10	79
1950	30.4 °C8 July 1950	-7.1 °C29 December 1950	11.9 °C	1,719 mm	1	89
1949	29.7 °C16 July 1949	-7.7 °C18 January 1949	11.6 °C	1,849 mm	0	83
1948	29.1 °C29 July 1948	-5.9 °C3 January 1948	12.2 °C	1,742 mm	0	73
1947	31.4 °C14 August 1947	-10.9 °C30 January 1947	10.7 °C	1,717 mm	5	100
1946	32.6 °C18 July 1946	-9.0 °C12 March 1946	11.9 °C	1,584 mm	7	99
1945	30.1 °C4 August 1945	-8.8 °C18 January 1945	11.0 °C	2,301 mm	4	102
1944	30.5 °C5 August 1944	-9.8 °C18 February 1944	11.6 °C	1,571 mm	1	104
1943	29.7 °C8 August 1943	-12.1 °C30 January 1943	11.3 °C	1,217 mm	0	103
1942	32.5 °C2 August 1942	-11.5 °C12 February 1942	11.6 °C	1,221 mm	15	89
1941	30.1 °C8 August 1941	-12.4 °C12 February 1941	11.5 °C	1,905 mm	2	88
1940	30.7 °C24 July 1940	-10.2 °C27 January 1940	11.0 °C	1,482 mm	2	102

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

18.3 °C

+1.7 °C

Hot days (≥ 30 °C)

70 d/yr

+50

Frost days (< 0 °C)

47 d/yr

-14

Annual rainfall

1878 mm

-168 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	5.5 °C	+1.0 °C	66 mm	-39 mm
Feb	3.6 °C	-1.4 °C	93 mm	-11 mm
Mar	9.9 °C	+0.7 °C	125 mm	-12 mm
Apr	17.1 °C	+1.7 °C	134 mm	-24 mm
May	21.0 °C	+1.0 °C	207 mm	+25 mm
Jun	26.1 °C	+2.7 °C	244 mm	-17 mm
Jul	31.4 °C	+4.0 °C	98 mm	-210 mm
Aug	31.4 °C	+2.6 °C	197 mm	+7 mm
Sep	28.2 °C	+3.4 °C	260 mm	+29 mm
Oct	20.8 °C	+1.7 °C	270 mm	+114 mm
Nov	14.4 °C	+0.8 °C	60 mm	-48 mm
Dec	9.1 °C	+1.4 °C	125 mm	+19 mm

The year's extremes

Hottest day

34.5 °C

30 Jul 2025

Coldest day

-4.1 °C

12 Feb 2025

Wettest day

72.6 mm

26 Oct 2025

Windiest day

30.0 km/h

30 Jan 2025

Strongest gust

85.7 km/h

25 May 2025

Hottest feels-like

42.7 °C

30 Jul 2025

Coldest feels-like

-9.9 °C

8 Feb 2025

Snowiest day

5.0 cm

17 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 Nagahama?

Nagahama has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 12.9 °C and it receives 2,046 mm of precipitation per year.

What is the hottest day ever recorded in Nagahama?

The hottest day measured in Nagahama between 1940 and 2025 was 5 August 2018, reaching 35.2 °C.

What is the coldest day in Nagahama?

The coldest day measured in Nagahama between 1940 and 2025 was 12 February 1941, at -12.4 °C.

Does it snow in Nagahama?

Yes. Nagahama gets on average 94.9 cm of snow per year and has around 61 frost days.

Has the climate of Nagahama warmed?

Yes: Nagahama warmed by +2.8 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Nagahama?

The wettest day measured in Nagahama between 1940 and 2025 was 25 June 1985, with 173 mm of rain in 24 hours.

What was the windiest day in Nagahama?

The windiest day measured in Nagahama between 1940 and 2025 was 4 September 2018, with winds reaching 54.6 km/h.

What is the warmest month in Nagahama?

The warmest month in Nagahama is August (25.1 °C on average); the coldest is January (1.5 °C).

How much does it rain in Nagahama?

Nagahama receives on average 2,046 mm of precipitation per year, spread over about 189 rainy days.

Is it sunny in Nagahama?

Nagahama gets on average 8.6 hours of sunshine per day, roughly 3,139 hours per year over 1940-2025.

What is the biggest single-day snowfall in Nagahama?

The heaviest 24-hour snowfall measured in Nagahama between 1940 and 2025 was 15 February 1968, with 26.4 cm.

Are there tropical nights in Nagahama?

Yes: Nagahama has on average 63 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Nagahama?

In Nagahama, between 1940 and 2025, the highest apparent temperature reached 42.7 °C on 30 July 2025, and the lowest was -16.4 °C on 16 January 1963.

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