Naka-niida climate — normals and trends

Q: What is the climate of Naka-niida?

Naka-niida has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 10.6 °C and it receives 1,300 mm of precipitation per year.

Q: What is the hottest day ever recorded in Naka-niida?

The hottest day measured in Naka-niida between 1940 and 2025 was 14 August 1994, reaching 37.0 °C.

Q: What is the coldest day in Naka-niida?

The coldest day measured in Naka-niida between 1940 and 2025 was 17 January 1942, at -21.0 °C.

Q: Does it snow in Naka-niida?

Yes. Naka-niida gets on average 114.8 cm of snow per year and has around 111 frost days.

Q: Has the climate of Naka-niida warmed?

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

Q: What is the wettest day in Naka-niida?

The wettest day measured in Naka-niida between 1940 and 2025 was 21 September 2011, with 139 mm of rain in 24 hours.

Q: What was the windiest day in Naka-niida?

The windiest day measured in Naka-niida between 1940 and 2025 was 4 April 2012, with winds reaching 48.6 km/h.

Q: What is the warmest month in Naka-niida?

The warmest month in Naka-niida is August (23.5 °C on average); the coldest is January (-1.7 °C).

Q: How much does it rain in Naka-niida?

Naka-niida receives on average 1,300 mm of precipitation per year, spread over about 164 rainy days.

Q: Is it sunny in Naka-niida?

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

Naka-niida (Japan) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 10.6 °C and it receives 1,300 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 (23.5 °C on average) and the coldest is January (-1.7 °C). Rainfall peaks in July.

Naka-niida averages 111 frost days, 14 hot days (≥ 30 °C) and 164 rainy days per year.

Naka-niida 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 132 to 90 per year over the period.

The hottest day of the period reached 37.0 °C (on 14 August 1994) and the coldest -21.0 °C (on 17 January 1942).

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

Naka-niidaMiyagi

coords: 38.57°, 140.85°
period: 1940–2025 · 86 yrs

DfaHot-summer humid continentalWarmest monthAugustColdest monthJanuaryWettest monthJulyDriest monthFebruary

Mean daily temperature

10.6°C

Average daily high

14.7°C

Average daily low

6.7°C

Annual rainfall

1,300mm

Sunshine / day

8.2h

Mean relative humidity

78%

Average peak wind

15.0km/h

Seasonal range

25.2°C

Frost days (< 0 °C)

111 d/yr

Hot days (≥ 30 °C)

14 d/yr

Rainy days (≥ 1 mm)

164 d/yr

Annual snowfall

114.8 cm

Average feels-like high

13.4 °C

Average feels-like low

5.0 °C

Average peak gust

41.1 km/h

Tropical nights (≥ 20 °C)

36 d/yr

Solar radiation

13.3 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+2.9 °C

since 1940

+0.3 °C per decade · r² = 0.66 · 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

37.0 °C

14 August 1994

Coldest day

-21.0 °C

17 January 1942

Wettest day

139 mm

21 September 2011

Windiest day

48.6 km/h

4 April 2012

Strongest gust

148.0 km/h

27 September 1959

Hottest feels-like

42.8 °C

14 August 1994

Coldest feels-like

-26.0 °C

17 January 1942

Snowiest day

43.9 cm

24 December 1980

Sunniest day

14.4 h

18 June 1987

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	35.3 °C24 July 2025	-8.3 °C24 February 2025	12.5 °C	1,336 mm	50	100
2024	32.9 °C22 July 2024	-6.4 °C24 February 2024	13.1 °C	1,420 mm	34	91
2023	34.8 °C29 July 2023	-11.2 °C30 January 2023	13.2 °C	1,319 mm	50	79
2022	33.9 °C3 July 2022	-8.5 °C6 January 2022	11.9 °C	1,379 mm	26	95
2021	34.1 °C20 July 2021	-14.5 °C9 January 2021	12.0 °C	1,427 mm	14	87
2020	34.7 °C11 August 2020	-8.7 °C31 December 2020	12.3 °C	1,447 mm	22	73
2019	34.1 °C6 August 2019	-7.6 °C26 January 2019	12.1 °C	1,444 mm	23	100
2018	35.1 °C22 August 2018	-12.4 °C15 January 2018	12.0 °C	1,204 mm	34	90
2017	33.4 °C14 July 2017	-11.3 °C15 January 2017	11.4 °C	1,393 mm	14	108
2016	32.5 °C6 August 2016	-11.4 °C8 February 2016	12.0 °C	1,302 mm	10	86
2015	35.7 °C6 August 2015	-9.2 °C21 January 2015	12.2 °C	1,254 mm	21	78
2014	33.8 °C5 August 2014	-12.1 °C14 February 2014	11.2 °C	1,438 mm	12	99
2013	33.7 °C17 August 2013	-11.6 °C18 January 2013	11.2 °C	1,250 mm	15	117
2012	33.7 °C2 August 2012	-12.0 °C1 February 2012	11.0 °C	1,180 mm	28	120
2011	33.8 °C15 August 2011	-8.9 °C31 January 2011	11.2 °C	1,228 mm	26	116
2010	33.9 °C5 August 2010	-9.6 °C12 March 2010	11.8 °C	1,461 mm	41	101
2009	32.0 °C15 July 2009	-10.0 °C18 January 2009	11.5 °C	1,424 mm	4	94
2008	32.9 °C7 August 2008	-5.4 °C19 January 2008	11.4 °C	1,119 mm	7	100
2007	34.3 °C15 August 2007	-6.7 °C5 February 2007	11.8 °C	1,264 mm	19	96
2006	32.2 °C3 August 2006	-13.1 °C7 January 2006	11.1 °C	1,486 mm	11	97
2005	34.6 °C5 August 2005	-13.9 °C6 March 2005	10.8 °C	1,187 mm	14	114
2004	32.5 °C24 July 2004	-10.6 °C11 February 2004	11.8 °C	1,438 mm	18	94
2003	31.4 °C23 August 2003	-13.6 °C3 January 2003	10.8 °C	1,355 mm	3	87
2002	33.3 °C1 August 2002	-11.2 °C20 January 2002	11.2 °C	1,405 mm	19	90
2001	32.5 °C23 July 2001	-14.7 °C17 January 2001	10.7 °C	1,126 mm	10	109
2000	33.1 °C23 July 2000	-13.1 °C27 January 2000	11.4 °C	1,351 mm	20	105
1999	34.1 °C31 July 1999	-10.2 °C5 February 1999	11.5 °C	1,501 mm	23	107
1998	32.4 °C3 July 1998	-10.2 °C29 January 1998	11.4 °C	1,555 mm	3	107
1997	33.7 °C9 August 1997	-10.1 °C22 January 1997	11.2 °C	1,313 mm	12	100
1996	33.2 °C26 July 1996	-11.5 °C20 February 1996	10.2 °C	1,228 mm	13	111
1995	33.3 °C30 July 1995	-12.3 °C17 January 1995	10.9 °C	1,221 mm	14	103
1994	37.0 °C14 August 1994	-11.3 °C31 January 1994	11.7 °C	1,053 mm	30	112
1993	29.0 °C25 August 1993	-9.7 °C9 March 1993	10.4 °C	1,460 mm	0	100
1992	33.6 °C30 July 1992	-9.6 °C8 March 1992	10.8 °C	1,012 mm	10	104
1991	31.5 °C23 July 1991	-11.6 °C20 February 1991	11.2 °C	1,518 mm	6	103
1990	33.7 °C23 August 1990	-13.9 °C3 February 1990	12.2 °C	1,235 mm	22	73
1989	31.2 °C22 August 1989	-10.7 °C26 January 1989	11.4 °C	1,266 mm	6	80
1988	31.5 °C4 August 1988	-12.5 °C10 February 1988	9.9 °C	1,343 mm	5	115
1987	33.4 °C7 June 1987	-11.2 °C23 January 1987	11.0 °C	1,044 mm	9	116
1986	33.9 °C30 July 1986	-14.6 °C8 February 1986	9.9 °C	1,172 mm	5	108
1985	34.0 °C1 September 1985	-14.6 °C16 December 1985	10.4 °C	1,200 mm	28	119
1984	34.7 °C12 August 1984	-12.6 °C8 January 1984	9.5 °C	1,064 mm	22	136
1983	33.2 °C7 August 1983	-12.5 °C14 February 1983	10.2 °C	1,464 mm	7	114
1982	30.2 °C22 August 1982	-11.5 °C13 February 1982	10.8 °C	1,293 mm	1	99
1981	32.5 °C1 August 1981	-11.7 °C14 January 1981	9.5 °C	1,183 mm	13	130
1980	30.6 °C22 July 1980	-11.3 °C17 February 1980	9.8 °C	1,477 mm	2	121
1979	32.5 °C1 August 1979	-12.0 °C25 January 1979	11.2 °C	1,490 mm	3	111
1978	33.2 °C25 July 1978	-15.9 °C17 February 1978	10.6 °C	1,213 mm	23	113
1977	32.1 °C31 July 1977	-13.6 °C21 January 1977	10.1 °C	1,411 mm	8	108
1976	30.5 °C25 July 1976	-13.2 °C21 February 1976	9.5 °C	1,649 mm	3	127
1975	32.6 °C4 August 1975	-11.9 °C2 January 1975	10.6 °C	1,200 mm	18	114
1974	30.9 °C3 September 1974	-10.3 °C27 February 1974	9.7 °C	1,462 mm	4	130
1973	34.1 °C18 August 1973	-9.5 °C24 December 1973	10.7 °C	980 mm	29	121
1972	31.8 °C6 August 1972	-11.7 °C26 February 1972	11.0 °C	1,708 mm	10	98
1971	32.3 °C29 July 1971	-12.2 °C11 January 1971	10.0 °C	1,476 mm	12	120
1970	34.4 °C25 July 1970	-12.9 °C20 January 1970	9.9 °C	1,071 mm	14	132
1969	32.4 °C4 August 1969	-15.1 °C31 December 1969	9.9 °C	1,380 mm	4	126
1968	32.5 °C20 July 1968	-11.4 °C17 February 1968	10.6 °C	1,367 mm	7	98
1967	32.9 °C10 August 1967	-16.1 °C31 December 1967	10.4 °C	1,495 mm	17	125
1966	30.9 °C30 August 1966	-13.8 °C26 December 1966	9.6 °C	1,469 mm	10	134
1965	30.7 °C5 August 1965	-16.1 °C28 December 1965	9.5 °C	1,066 mm	2	136
1964	33.0 °C16 August 1964	-10.1 °C6 January 1964	10.4 °C	1,611 mm	17	121
1963	31.8 °C26 July 1963	-13.0 °C25 January 1963	10.5 °C	1,238 mm	6	107
1962	34.7 °C3 August 1962	-9.8 °C1 March 1962	10.8 °C	1,219 mm	16	116
1961	32.9 °C30 July 1961	-12.2 °C19 January 1961	11.1 °C	1,362 mm	16	115
1960	33.7 °C8 August 1960	-13.1 °C14 January 1960	10.7 °C	1,278 mm	14	110
1959	31.5 °C30 July 1959	-11.8 °C8 February 1959	11.0 °C	1,627 mm	9	95
1958	31.8 °C17 July 1958	-12.6 °C21 January 1958	10.6 °C	1,788 mm	6	114
1957	32.1 °C22 August 1957	-12.9 °C23 February 1957	10.2 °C	1,317 mm	6	125
1956	32.1 °C29 July 1956	-11.0 °C27 February 1956	10.0 °C	1,601 mm	8	126
1955	34.5 °C2 August 1955	-11.8 °C14 January 1955	11.1 °C	1,338 mm	20	108
1954	32.9 °C15 August 1954	-10.5 °C5 February 1954	10.3 °C	1,137 mm	6	108
1953	32.0 °C28 July 1953	-11.3 °C28 January 1953	10.0 °C	1,297 mm	8	108
1952	30.5 °C3 August 1952	-17.3 °C10 January 1952	8.5 °C	1,257 mm	3	140
1951	32.4 °C14 August 1951	-16.5 °C16 January 1951	9.4 °C	1,027 mm	19	129
1950	33.2 °C23 July 1950	-16.1 °C4 December 1950	9.9 °C	1,061 mm	15	125
1949	31.8 °C9 August 1949	-12.8 °C10 January 1949	9.5 °C	1,080 mm	8	134
1948	30.8 °C9 September 1948	-14.0 °C1 February 1948	10.0 °C	1,071 mm	4	123
1947	31.3 °C14 August 1947	-17.3 °C29 January 1947	8.3 °C	1,262 mm	3	148
1946	31.8 °C21 July 1946	-12.9 °C10 February 1946	9.6 °C	975 mm	7	133
1945	32.0 °C5 August 1945	-16.4 °C27 January 1945	8.6 °C	1,658 mm	6	132
1944	31.1 °C5 August 1944	-16.7 °C7 January 1944	9.4 °C	1,061 mm	5	134
1943	30.3 °C5 August 1943	-15.4 °C10 January 1943	9.0 °C	749 mm	4	141
1942	32.2 °C10 July 1942	-21.0 °C17 January 1942	9.3 °C	909 mm	16	138
1941	29.7 °C24 August 1941	-15.5 °C1 February 1941	8.8 °C	1,181 mm	0	137
1940	30.2 °C20 July 1940	-14.9 °C17 December 1940	8.7 °C	1,042 mm	1	140

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

17.0 °C

+2.3 °C

Hot days (≥ 30 °C)

50 d/yr

+36

Frost days (< 0 °C)

100 d/yr

-11

Annual rainfall

1336 mm

+36 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	3.8 °C	+1.6 °C	68 mm	+3 mm
Feb	3.4 °C	+0.4 °C	42 mm	-18 mm
Mar	9.9 °C	+2.9 °C	83 mm	-2 mm
Apr	14.9 °C	+1.0 °C	109 mm	+17 mm
May	19.6 °C	+0.6 °C	177 mm	+77 mm
Jun	26.7 °C	+4.7 °C	79 mm	-54 mm
Jul	31.1 °C	+5.5 °C	83 mm	-99 mm
Aug	30.2 °C	+2.9 °C	233 mm	+71 mm
Sep	26.0 °C	+2.9 °C	137 mm	-28 mm
Oct	18.0 °C	+0.7 °C	165 mm	+50 mm
Nov	12.4 °C	+1.2 °C	73 mm	+1 mm
Dec	6.8 °C	+1.7 °C	87 mm	+18 mm

The year's extremes

Hottest day

35.3 °C

24 Jul 2025

Coldest day

-8.3 °C

24 Feb 2025

Wettest day

69.2 mm

6 Aug 2025

Windiest day

35.8 km/h

14 Mar 2025

Strongest gust

92.2 km/h

13 Feb 2025

Hottest feels-like

41.7 °C

25 Jul 2025

Coldest feels-like

-12.4 °C

24 Feb 2025

Snowiest day

6.9 cm

9 Jan 2025

Sunniest day

14.4 h

18 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 Naka-niida?

Naka-niida has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 10.6 °C and it receives 1,300 mm of precipitation per year.

What is the hottest day ever recorded in Naka-niida?

The hottest day measured in Naka-niida between 1940 and 2025 was 14 August 1994, reaching 37.0 °C.

What is the coldest day in Naka-niida?

The coldest day measured in Naka-niida between 1940 and 2025 was 17 January 1942, at -21.0 °C.

Does it snow in Naka-niida?

Yes. Naka-niida gets on average 114.8 cm of snow per year and has around 111 frost days.

Has the climate of Naka-niida warmed?

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

What is the wettest day in Naka-niida?

The wettest day measured in Naka-niida between 1940 and 2025 was 21 September 2011, with 139 mm of rain in 24 hours.

What was the windiest day in Naka-niida?

The windiest day measured in Naka-niida between 1940 and 2025 was 4 April 2012, with winds reaching 48.6 km/h.

What is the warmest month in Naka-niida?

The warmest month in Naka-niida is August (23.5 °C on average); the coldest is January (-1.7 °C).

How much does it rain in Naka-niida?

Naka-niida receives on average 1,300 mm of precipitation per year, spread over about 164 rainy days.

Is it sunny in Naka-niida?

Naka-niida 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 Naka-niida?

The heaviest 24-hour snowfall measured in Naka-niida between 1940 and 2025 was 24 December 1980, with 43.9 cm.

Are there tropical nights in Naka-niida?

Yes: Naka-niida has on average 36 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Naka-niida?

In Naka-niida, between 1940 and 2025, the highest apparent temperature reached 42.8 °C on 14 August 1994, and the lowest was -26.0 °C on 17 January 1942.

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