Daigo climate — normals and trends

Q: What is the climate of Daigo?

Daigo has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 12.9 °C and it receives 1,380 mm of precipitation per year.

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

The hottest day measured in Daigo between 1940 and 2025 was 2 August 2022, reaching 37.2 °C.

Q: What is the coldest day in Daigo?

The coldest day measured in Daigo between 1940 and 2025 was 22 February 1968, at -17.4 °C.

Q: Does it snow in Daigo?

Yes. Daigo gets on average 34.1 cm of snow per year and has around 78 frost days.

Q: Has the climate of Daigo warmed?

Yes: Daigo warmed by +2.4 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Daigo?

The wettest day measured in Daigo between 1940 and 2025 was 28 June 1966, with 153 mm of rain in 24 hours.

Q: What was the windiest day in Daigo?

The windiest day measured in Daigo between 1940 and 2025 was 25 September 1966, with winds reaching 46.1 km/h.

Q: What is the warmest month in Daigo?

The warmest month in Daigo is August (24.9 °C on average); the coldest is January (1.6 °C).

Q: How much does it rain in Daigo?

Daigo receives on average 1,380 mm of precipitation per year, spread over about 147 rainy days.

Q: Is it sunny in Daigo?

Daigo gets on average 8.3 hours of sunshine per day, roughly 3,030 hours per year over 1940-2025.

Daigo (Japan) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 12.9 °C and it receives 1,380 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 (24.9 °C on average) and the coldest is January (1.6 °C). Rainfall peaks in July.

Daigo averages 78 frost days, 27 hot days (≥ 30 °C) and 147 rainy days per year.

Daigo has warmed by +2.4 °C between 1940 and 2025, or +0.28 °C per decade. This trend is statistically significant.

The number of frost days there went from about 100 to 56 per year over the period.

The hottest day of the period reached 37.2 °C (on 2 August 2022) and the coldest -17.4 °C (on 22 February 1968).

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

DaigoIbaraki

coords: 36.77°, 140.35°
period: 1940–2025 · 86 yrs

CfaHumid subtropicalWarmest monthAugustColdest monthJanuaryWettest monthJulyDriest monthJanuary

Mean daily temperature

12.9°C

Average daily high

17.4°C

Average daily low

9.0°C

Annual rainfall

1,380mm

Sunshine / day

8.3h

Mean relative humidity

73%

Average peak wind

12.8km/h

Seasonal range

23.3°C

Frost days (< 0 °C)

78 d/yr

Hot days (≥ 30 °C)

27 d/yr

Rainy days (≥ 1 mm)

147 d/yr

Annual snowfall

34.1 cm

Average feels-like high

16.7 °C

Average feels-like low

7.8 °C

Average peak gust

32.7 km/h

Tropical nights (≥ 20 °C)

54 d/yr

Solar radiation

13.6 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+2.4 °C

since 1940

+0.3 °C per decade · r² = 0.65 · 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

37.2 °C

2 August 2022

Coldest day

-17.4 °C

22 February 1968

Wettest day

153 mm

28 June 1966

Windiest day

46.1 km/h

25 September 1966

Strongest gust

145.4 km/h

27 September 1959

Hottest feels-like

43.2 °C

10 August 2013

Coldest feels-like

-22.0 °C

22 February 1968

Snowiest day

29.5 cm

8 February 2014

Sunniest day

14.1 h

16 June 1953

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	35.5 °C5 August 2025	-5.3 °C23 February 2025	14.2 °C	1,166 mm	64	84
2024	36.4 °C22 July 2024	-4.5 °C12 January 2024	15.0 °C	1,586 mm	64	77
2023	36.8 °C16 July 2023	-8.1 °C25 January 2023	15.1 °C	1,303 mm	71	60
2022	37.2 °C2 August 2022	-4.5 °C23 March 2022	14.1 °C	1,288 mm	43	65
2021	34.6 °C19 July 2021	-4.2 °C9 January 2021	14.1 °C	1,693 mm	32	59
2020	36.2 °C11 August 2020	-5.4 °C7 February 2020	14.2 °C	1,289 mm	37	42
2019	35.4 °C1 August 2019	-3.6 °C10 January 2019	14.1 °C	1,363 mm	34	60
2018	35.8 °C5 August 2018	-11.4 °C24 January 2018	14.4 °C	1,362 mm	49	60
2017	33.6 °C9 July 2017	-4.1 °C8 March 2017	13.4 °C	1,332 mm	31	80
2016	33.9 °C9 August 2016	-4.4 °C25 January 2016	14.0 °C	1,327 mm	29	68
2015	35.8 °C7 August 2015	-3.5 °C10 February 2015	14.1 °C	1,377 mm	33	59
2014	35.4 °C6 August 2014	-5.3 °C6 February 2014	13.3 °C	1,463 mm	31	82
2013	36.1 °C10 August 2013	-9.9 °C17 January 2013	13.6 °C	1,263 mm	30	73
2012	34.4 °C28 July 2012	-4.8 °C27 January 2012	13.1 °C	1,419 mm	40	86
2011	34.6 °C10 August 2011	-4.0 °C17 December 2011	13.3 °C	1,529 mm	41	96
2010	35.4 °C21 July 2010	-7.0 °C19 February 2010	13.8 °C	1,694 mm	48	64
2009	33.0 °C26 July 2009	-3.0 °C20 December 2009	13.6 °C	1,401 mm	17	51
2008	33.7 °C8 August 2008	-3.3 °C4 February 2008	13.5 °C	1,215 mm	25	65
2007	36.3 °C15 August 2007	-3.7 °C31 December 2007	13.8 °C	1,360 mm	36	56
2006	34.7 °C4 August 2006	-4.7 °C5 February 2006	13.5 °C	1,567 mm	26	57
2005	34.3 °C5 August 2005	-3.7 °C10 January 2005	13.2 °C	1,106 mm	38	78
2004	34.4 °C20 July 2004	-3.7 °C23 January 2004	14.1 °C	1,570 mm	41	53
2003	34.1 °C24 August 2003	-3.6 °C3 February 2003	13.1 °C	1,530 mm	21	56
2002	36.0 °C1 August 2002	-6.2 °C11 December 2002	13.6 °C	1,274 mm	39	46
2001	35.8 °C24 July 2001	-13.5 °C16 January 2001	13.1 °C	1,112 mm	32	76
2000	35.0 °C23 July 2000	-3.4 °C10 February 2000	13.7 °C	1,441 mm	42	52
1999	33.9 °C24 July 1999	-4.0 °C14 February 1999	14.0 °C	1,250 mm	37	64
1998	34.9 °C3 July 1998	-11.7 °C10 January 1998	13.8 °C	1,827 mm	19	58
1997	34.9 °C5 July 1997	-4.2 °C7 January 1997	13.6 °C	1,153 mm	30	61
1996	35.0 °C18 July 1996	-4.3 °C20 February 1996	12.8 °C	1,238 mm	28	70
1995	35.6 °C28 July 1995	-3.6 °C6 January 1995	13.1 °C	1,243 mm	31	59
1994	36.8 °C4 August 1994	-8.8 °C23 January 1994	13.8 °C	1,195 mm	51	62
1993	31.9 °C28 August 1993	-3.5 °C23 January 1993	12.5 °C	1,589 mm	6	64
1992	33.9 °C31 July 1992	-6.0 °C3 February 1992	13.1 °C	1,201 mm	26	60
1991	34.9 °C24 July 1991	-2.8 °C26 February 1991	13.6 °C	1,575 mm	28	61
1990	35.0 °C19 July 1990	-8.0 °C3 February 1990	14.1 °C	1,472 mm	36	47
1989	32.2 °C9 August 1989	-3.1 °C28 January 1989	13.4 °C	1,368 mm	15	33
1988	32.0 °C23 August 1988	-8.6 °C17 February 1988	12.3 °C	1,505 mm	12	69
1987	36.4 °C24 July 1987	-8.6 °C8 December 1987	13.4 °C	1,254 mm	31	71
1986	33.4 °C4 September 1986	-8.8 °C20 February 1986	12.2 °C	1,355 mm	19	86
1985	35.0 °C29 July 1985	-7.1 °C16 March 1985	12.7 °C	1,503 mm	38	79
1984	34.1 °C2 September 1984	-13.4 °C4 February 1984	11.7 °C	914 mm	30	112
1983	33.7 °C7 August 1983	-13.5 °C23 January 1983	12.5 °C	1,522 mm	24	81
1982	31.3 °C14 August 1982	-5.8 °C8 February 1982	13.0 °C	1,504 mm	7	61
1981	33.5 °C18 July 1981	-11.7 °C14 January 1981	11.7 °C	1,360 mm	19	92
1980	32.5 °C23 July 1980	-11.0 °C25 March 1980	12.2 °C	1,522 mm	5	98
1979	33.9 °C1 August 1979	-5.1 °C17 January 1979	13.6 °C	1,733 mm	18	71
1978	34.5 °C25 July 1978	-9.7 °C4 January 1978	12.9 °C	1,362 mm	43	83
1977	32.6 °C3 August 1977	-14.4 °C6 March 1977	12.6 °C	1,737 mm	14	79
1976	32.3 °C1 August 1976	-6.6 °C27 December 1976	12.0 °C	1,831 mm	12	77
1975	33.9 °C31 July 1975	-7.0 °C14 December 1975	12.7 °C	1,470 mm	32	94
1974	32.1 °C6 August 1974	-12.6 °C28 February 1974	12.2 °C	1,655 mm	17	83
1973	34.3 °C16 July 1973	-3.9 °C25 February 1973	12.9 °C	1,177 mm	36	90
1972	34.4 °C8 August 1972	-5.2 °C9 February 1972	13.1 °C	1,708 mm	21	69
1971	33.0 °C7 August 1971	-6.2 °C10 January 1971	12.4 °C	1,720 mm	30	77
1970	34.6 °C23 July 1970	-9.2 °C7 January 1970	12.3 °C	1,242 mm	28	91
1969	32.8 °C30 July 1969	-9.1 °C1 March 1969	12.5 °C	1,587 mm	25	95
1968	33.5 °C20 July 1968	-17.4 °C22 February 1968	12.7 °C	1,456 mm	16	79
1967	33.2 °C5 August 1967	-17.0 °C17 February 1967	12.8 °C	1,352 mm	29	89
1966	32.8 °C8 August 1966	-6.4 °C25 January 1966	12.0 °C	1,599 mm	17	98
1965	32.6 °C30 July 1965	-6.1 °C4 February 1965	11.8 °C	1,349 mm	12	100
1964	33.6 °C17 August 1964	-10.3 °C14 February 1964	12.7 °C	1,596 mm	29	83
1963	33.8 °C13 August 1963	-5.5 °C7 January 1963	12.7 °C	1,233 mm	28	91
1962	34.7 °C29 July 1962	-7.7 °C28 February 1962	13.0 °C	1,318 mm	35	81
1961	34.4 °C26 July 1961	-5.6 °C2 February 1961	13.5 °C	1,338 mm	34	84
1960	34.4 °C22 July 1960	-5.9 °C25 January 1960	13.0 °C	1,277 mm	28	74
1959	34.7 °C31 July 1959	-9.9 °C12 January 1959	13.1 °C	1,595 mm	24	67
1958	34.2 °C1 August 1958	-5.5 °C4 January 1958	12.9 °C	1,550 mm	23	68
1957	32.6 °C23 August 1957	-6.2 °C7 March 1957	12.5 °C	1,359 mm	18	87
1956	34.7 °C1 August 1956	-11.5 °C26 January 1956	12.4 °C	1,376 mm	23	93
1955	34.8 °C31 July 1955	-5.1 °C18 December 1955	13.2 °C	1,417 mm	30	72
1954	34.2 °C23 August 1954	-13.9 °C27 January 1954	12.5 °C	1,223 mm	21	74
1953	35.0 °C21 August 1953	-9.3 °C23 February 1953	12.3 °C	1,448 mm	14	82
1952	32.1 °C26 August 1952	-13.2 °C5 February 1952	11.2 °C	1,206 mm	12	109
1951	33.1 °C9 August 1951	-12.7 °C21 February 1951	11.7 °C	1,370 mm	20	98
1950	32.1 °C19 July 1950	-7.0 °C7 January 1950	12.3 °C	1,191 mm	15	109
1949	32.2 °C10 August 1949	-5.1 °C30 December 1949	11.9 °C	1,182 mm	16	104
1948	30.7 °C6 July 1948	-5.9 °C24 February 1948	12.3 °C	1,244 mm	6	92
1947	33.0 °C13 August 1947	-8.5 °C5 February 1947	11.1 °C	1,278 mm	20	113
1946	34.6 °C17 July 1946	-10.8 °C5 February 1946	12.0 °C	1,029 mm	20	111
1945	32.9 °C4 August 1945	-14.6 °C24 February 1945	11.3 °C	1,542 mm	10	115
1944	32.2 °C3 August 1944	-7.6 °C3 February 1944	12.1 °C	1,218 mm	12	109
1943	31.4 °C9 August 1943	-6.3 °C1 February 1943	11.7 °C	757 mm	15	109
1942	34.8 °C11 July 1942	-11.8 °C14 February 1942	12.0 °C	899 mm	19	99
1941	30.8 °C8 August 1941	-8.0 °C5 March 1941	11.6 °C	1,429 mm	6	105
1940	32.4 °C20 July 1940	-11.5 °C9 February 1940	11.3 °C	1,055 mm	15	113

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

19.4 °C

+2.0 °C

Hot days (≥ 30 °C)

64 d/yr

+37

Frost days (< 0 °C)

84 d/yr

Annual rainfall

1166 mm

-214 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	8.4 °C	+2.1 °C	34 mm	-8 mm
Feb	7.8 °C	+0.8 °C	7 mm	-45 mm
Mar	13.0 °C	+2.3 °C	113 mm	+19 mm
Apr	18.1 °C	+1.6 °C	110 mm	-2 mm
May	21.3 °C	+0.2 °C	194 mm	+64 mm
Jun	27.5 °C	+3.5 °C	137 mm	-24 mm
Jul	31.2 °C	+3.5 °C	102 mm	-81 mm
Aug	31.7 °C	+2.7 °C	101 mm	-61 mm
Sep	28.1 °C	+3.2 °C	130 mm	-49 mm
Oct	19.9 °C	+0.7 °C	134 mm	-8 mm
Nov	15.2 °C	+1.3 °C	40 mm	-37 mm
Dec	9.9 °C	+1.2 °C	65 mm	+17 mm

The year's extremes

Hottest day

35.5 °C

5 Aug 2025

Coldest day

-5.3 °C

23 Feb 2025

Wettest day

71.9 mm

5 Sep 2025

Windiest day

29.7 km/h

13 Feb 2025

Strongest gust

73.4 km/h

1 Nov 2025

Hottest feels-like

42.3 °C

23 Jul 2025

Coldest feels-like

-8.7 °C

23 Feb 2025

Snowiest day

6.7 cm

3 Mar 2025

Sunniest day

13.9 h

6 Jul 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 Daigo?

Daigo has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 12.9 °C and it receives 1,380 mm of precipitation per year.

What is the hottest day ever recorded in Daigo?

The hottest day measured in Daigo between 1940 and 2025 was 2 August 2022, reaching 37.2 °C.

What is the coldest day in Daigo?

The coldest day measured in Daigo between 1940 and 2025 was 22 February 1968, at -17.4 °C.

Does it snow in Daigo?

Yes. Daigo gets on average 34.1 cm of snow per year and has around 78 frost days.

Has the climate of Daigo warmed?

Yes: Daigo warmed by +2.4 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Daigo?

The wettest day measured in Daigo between 1940 and 2025 was 28 June 1966, with 153 mm of rain in 24 hours.

What was the windiest day in Daigo?

The windiest day measured in Daigo between 1940 and 2025 was 25 September 1966, with winds reaching 46.1 km/h.

What is the warmest month in Daigo?

The warmest month in Daigo is August (24.9 °C on average); the coldest is January (1.6 °C).

How much does it rain in Daigo?

Daigo receives on average 1,380 mm of precipitation per year, spread over about 147 rainy days.

Is it sunny in Daigo?

Daigo gets on average 8.3 hours of sunshine per day, roughly 3,030 hours per year over 1940-2025.

What is the biggest single-day snowfall in Daigo?

The heaviest 24-hour snowfall measured in Daigo between 1940 and 2025 was 8 February 2014, with 29.5 cm.

Are there tropical nights in Daigo?

Yes: Daigo has on average 54 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Daigo?

In Daigo, between 1940 and 2025, the highest apparent temperature reached 43.2 °C on 10 August 2013, and the lowest was -22.0 °C on 22 February 1968.

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