Saiki climate — normals and trends

Q: What is the climate of Saiki?

Saiki has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 17.0 °C and it receives 1,655 mm of precipitation per year.

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

The hottest day measured in Saiki between 1940 and 2025 was 31 July 1958, reaching 33.7 °C.

Q: What is the coldest day in Saiki?

The coldest day measured in Saiki between 1940 and 2025 was 26 February 1981, at -2.5 °C.

Q: Does it snow in Saiki?

Yes. Saiki gets on average 1.2 cm of snow per year and has around 0 frost days.

Q: Has the climate of Saiki warmed?

Yes: Saiki warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Saiki?

The wettest day measured in Saiki between 1940 and 2025 was 11 September 1963, with 383 mm of rain in 24 hours.

Q: What was the windiest day in Saiki?

The windiest day measured in Saiki between 1940 and 2025 was 30 August 2004, with winds reaching 87.1 km/h.

Q: What is the warmest month in Saiki?

The warmest month in Saiki is August (26.9 °C on average); the coldest is January (7.5 °C).

Q: How much does it rain in Saiki?

Saiki receives on average 1,655 mm of precipitation per year, spread over about 133 rainy days.

Q: Is it sunny in Saiki?

Saiki gets on average 8.9 hours of sunshine per day, roughly 3,249 hours per year over 1940-2025.

Saiki (Japan) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 17.0 °C and it receives 1,655 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 (26.9 °C on average) and the coldest is January (7.5 °C). Rainfall peaks in June.

Saiki averages 0 frost days, 14 hot days (≥ 30 °C) and 133 rainy days per year.

Saiki has warmed by +2.0 °C between 1940 and 2025, or +0.23 °C per decade. This trend is statistically significant.

The hottest day of the period reached 33.7 °C (on 31 July 1958) and the coldest -2.5 °C (on 26 February 1981).

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

SaikiOita

coords: 32.95°, 131.90°
period: 1940–2025 · 86 yrs

CfaHumid subtropicalWarmest monthAugustColdest monthJanuaryWettest monthJuneDriest monthJanuary

Mean daily temperature

17.0°C

Average daily high

19.4°C

Average daily low

14.9°C

Annual rainfall

1,655mm

Sunshine / day

8.9h

Mean relative humidity

75%

Average peak wind

22.9km/h

Seasonal range

19.4°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

14 d/yr

Rainy days (≥ 1 mm)

133 d/yr

Annual snowfall

1.2 cm

Average feels-like high

19.2 °C

Average feels-like low

13.6 °C

Average peak gust

40.3 km/h

Tropical nights (≥ 20 °C)

113 d/yr

Solar radiation

15.3 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+2.0 °C

since 1940

+0.2 °C per decade · r² = 0.68 · 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

33.7 °C

31 July 1958

Coldest day

-2.5 °C

26 February 1981

Wettest day

383 mm

11 September 1963

Windiest day

87.1 km/h

30 August 2004

Strongest gust

186.8 km/h

7 September 2004

Hottest feels-like

41.2 °C

8 August 2017

Coldest feels-like

-11.4 °C

26 February 1981

Snowiest day

6.1 cm

19 January 1984

Sunniest day

13.9 h

3 June 1945

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	32.3 °C6 August 2025	0.3 °C8 February 2025	17.9 °C	1,616 mm	50	0
2024	33.4 °C16 August 2024	1.6 °C24 January 2024	18.8 °C	1,903 mm	60	0
2023	31.5 °C20 August 2023	-0.9 °C25 January 2023	18.3 °C	1,716 mm	29	2
2022	32.6 °C16 August 2022	1.9 °C17 February 2022	18.0 °C	1,515 mm	29	0
2021	31.1 °C31 July 2021	-0.2 °C9 January 2021	18.2 °C	1,642 mm	21	1
2020	32.8 °C14 August 2020	2.3 °C31 December 2020	18.0 °C	1,807 mm	27	0
2019	31.5 °C16 August 2019	3.8 °C2 February 2019	18.2 °C	2,007 mm	18	0
2018	31.7 °C24 July 2018	0.4 °C7 February 2018	17.8 °C	1,922 mm	31	0
2017	32.9 °C8 August 2017	2.5 °C15 January 2017	17.6 °C	1,890 mm	27	0
2016	32.9 °C22 August 2016	-0.7 °C24 January 2016	18.4 °C	1,830 mm	29	2
2015	31.5 °C21 August 2015	1.5 °C9 February 2015	17.7 °C	2,120 mm	17	0
2014	31.8 °C26 July 2014	3.7 °C10 January 2014	17.4 °C	1,940 mm	6	0
2013	33.2 °C23 August 2013	1.4 °C8 February 2013	17.8 °C	1,483 mm	42	0
2012	30.4 °C28 July 2012	0.1 °C2 February 2012	17.2 °C	1,937 mm	7	0
2011	32.2 °C18 August 2011	-0.9 °C16 January 2011	17.6 °C	1,857 mm	12	1
2010	32.3 °C12 September 2010	2.2 °C13 January 2010	17.9 °C	1,709 mm	36	0
2009	32.1 °C19 July 2009	1.7 °C24 January 2009	17.9 °C	1,511 mm	9	0
2008	33.1 °C3 August 2008	2.6 °C13 February 2008	17.8 °C	1,766 mm	27	0
2007	31.2 °C27 August 2007	2.5 °C3 February 2007	18.1 °C	1,365 mm	21	0
2006	31.3 °C8 August 2006	2.0 °C13 February 2006	17.7 °C	1,753 mm	22	0
2005	32.0 °C28 July 2005	-0.3 °C18 December 2005	17.3 °C	1,227 mm	22	1
2004	32.4 °C30 July 2004	-0.3 °C22 January 2004	18.1 °C	2,027 mm	23	1
2003	31.1 °C13 September 2003	1.4 °C5 January 2003	17.5 °C	2,069 mm	17	0
2002	31.2 °C16 July 2002	2.3 °C3 January 2002	17.7 °C	1,342 mm	14	0
2001	33.0 °C4 August 2001	0.3 °C15 January 2001	17.6 °C	1,732 mm	27	0
2000	33.0 °C22 July 2000	2.0 °C21 January 2000	17.6 °C	1,534 mm	13	0
1999	31.5 °C28 August 1999	1.7 °C4 February 1999	17.7 °C	1,735 mm	6	0
1998	33.6 °C16 August 1998	0.7 °C25 January 1998	18.6 °C	1,796 mm	35	0
1997	31.5 °C5 July 1997	1.3 °C22 January 1997	17.5 °C	1,355 mm	8	0
1996	31.4 °C15 August 1996	0.4 °C2 February 1996	17.0 °C	1,324 mm	8	0
1995	33.0 °C9 August 1995	1.9 °C1 February 1995	17.1 °C	1,257 mm	44	0
1994	32.3 °C16 July 1994	1.4 °C24 January 1994	17.9 °C	1,329 mm	35	0
1993	30.0 °C13 July 1993	1.8 °C28 January 1993	16.8 °C	2,272 mm	1	0
1992	31.1 °C30 July 1992	3.3 °C17 February 1992	17.2 °C	1,821 mm	5	0
1991	32.0 °C26 July 1991	-0.1 °C23 February 1991	17.3 °C	1,848 mm	13	1
1990	32.5 °C18 July 1990	-0.2 °C24 January 1990	17.8 °C	2,203 mm	37	1
1989	29.8 °C30 August 1989	2.6 °C28 January 1989	17.3 °C	1,748 mm	0	0
1988	30.2 °C10 July 1988	0.8 °C4 February 1988	16.8 °C	1,580 mm	1	0
1987	30.7 °C29 August 1987	0.8 °C28 February 1987	17.2 °C	1,801 mm	10	0
1986	30.9 °C20 August 1986	0.4 °C5 January 1986	16.6 °C	1,197 mm	8	0
1985	31.0 °C13 July 1985	-0.2 °C30 January 1985	17.0 °C	1,568 mm	6	1
1984	31.6 °C3 September 1984	-0.7 °C7 February 1984	16.4 °C	1,291 mm	9	3
1983	32.7 °C4 August 1983	0.8 °C14 February 1983	17.0 °C	1,445 mm	23	0
1982	29.5 °C6 August 1982	0.6 °C29 January 1982	16.7 °C	2,071 mm	0	0
1981	30.7 °C18 July 1981	-2.5 °C26 February 1981	16.3 °C	1,316 mm	7	2
1980	29.8 °C26 August 1980	0.4 °C18 January 1980	16.4 °C	1,936 mm	0	0
1979	31.5 °C18 August 1979	0.8 °C2 February 1979	17.0 °C	2,099 mm	10	0
1978	30.8 °C21 July 1978	0.8 °C16 February 1978	17.1 °C	1,379 mm	4	0
1977	32.5 °C8 August 1977	-2.3 °C16 February 1977	17.0 °C	1,760 mm	10	5
1976	32.1 °C14 August 1976	0.8 °C27 December 1976	16.5 °C	1,871 mm	11	0
1975	30.4 °C14 July 1975	1.1 °C22 February 1975	17.1 °C	2,131 mm	3	0
1974	30.0 °C7 August 1974	0.2 °C27 February 1974	16.5 °C	1,546 mm	1	0
1973	30.6 °C21 July 1973	0.4 °C24 December 1973	16.9 °C	1,394 mm	12	0
1972	30.0 °C4 August 1972	2.5 °C1 March 1972	16.9 °C	2,034 mm	1	0
1971	31.6 °C16 August 1971	0.7 °C5 January 1971	16.8 °C	1,584 mm	16	0
1970	31.4 °C15 August 1970	0.1 °C5 January 1970	16.5 °C	1,773 mm	10	0
1969	33.3 °C11 August 1969	0.9 °C16 January 1969	16.7 °C	1,524 mm	27	0
1968	30.2 °C17 July 1968	0.5 °C21 February 1968	16.5 °C	1,723 mm	3	0
1967	32.3 °C25 August 1967	-1.6 °C16 January 1967	17.0 °C	1,345 mm	36	1
1966	31.6 °C8 August 1966	0.8 °C20 January 1966	16.7 °C	2,071 mm	13	0
1965	30.6 °C11 August 1965	-0.3 °C3 February 1965	16.0 °C	1,613 mm	5	1
1964	32.0 °C18 July 1964	1.1 °C14 February 1964	17.5 °C	1,695 mm	17	0
1963	31.3 °C23 August 1963	-1.4 °C16 January 1963	16.7 °C	2,277 mm	12	3
1962	31.6 °C27 July 1962	2.2 °C17 February 1962	16.8 °C	1,614 mm	7	0
1961	31.2 °C7 July 1961	0.6 °C1 February 1961	17.4 °C	1,817 mm	18	0
1960	30.6 °C31 July 1960	0.4 °C30 December 1960	17.0 °C	1,545 mm	7	0
1959	31.2 °C2 September 1959	-0.8 °C17 January 1959	17.5 °C	1,978 mm	11	2
1958	33.7 °C31 July 1958	0.7 °C3 March 1958	17.3 °C	1,435 mm	13	0
1957	31.0 °C30 July 1957	0.3 °C11 February 1957	16.4 °C	1,851 mm	2	0
1956	31.2 °C23 July 1956	0.7 °C9 January 1956	16.3 °C	1,442 mm	13	0
1955	31.0 °C19 August 1955	0.1 °C21 February 1955	17.0 °C	1,521 mm	5	0
1954	30.2 °C11 August 1954	2.0 °C23 February 1954	17.0 °C	1,810 mm	3	0
1953	31.9 °C24 August 1953	1.7 °C10 February 1953	16.7 °C	1,818 mm	14	0
1952	31.0 °C2 August 1952	0.4 °C5 February 1952	16.5 °C	1,570 mm	3	0
1951	30.4 °C8 August 1951	0.9 °C22 January 1951	16.5 °C	1,563 mm	3	0
1950	30.3 °C23 August 1950	0.8 °C12 March 1950	16.5 °C	1,584 mm	1	0
1949	28.8 °C16 August 1949	1.4 °C16 January 1949	16.2 °C	1,743 mm	0	0
1948	29.5 °C3 September 1948	2.0 °C16 January 1948	16.8 °C	1,441 mm	0	0
1947	30.5 °C10 August 1947	-1.0 °C16 February 1947	15.5 °C	954 mm	4	1
1946	30.3 °C25 July 1946	1.0 °C10 January 1946	16.6 °C	1,255 mm	1	0
1945	29.3 °C4 September 1945	0.3 °C18 January 1945	16.1 °C	1,921 mm	0	0
1944	28.8 °C22 July 1944	1.8 °C15 February 1944	16.2 °C	1,067 mm	0	0
1943	29.4 °C14 August 1943	-0.2 °C12 January 1943	15.9 °C	1,258 mm	0	1
1942	31.2 °C1 August 1942	-1.0 °C13 February 1942	16.1 °C	803 mm	7	4
1941	28.4 °C8 July 1941	-1.6 °C1 February 1941	16.0 °C	1,572 mm	0	2
1940	29.8 °C24 July 1940	-0.3 °C26 January 1940	15.6 °C	850 mm	0	3

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

20.7 °C

+1.3 °C

Hot days (≥ 30 °C)

50 d/yr

+36

Frost days (< 0 °C)

0 d/yr

Annual rainfall

1616 mm

-39 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	10.6 °C	+0.6 °C	27 mm	-26 mm
Feb	9.8 °C	-0.8 °C	72 mm	-4 mm
Mar	15.1 °C	+1.6 °C	92 mm	-11 mm
Apr	18.6 °C	+0.7 °C	81 mm	-50 mm
May	21.6 °C	+0.2 °C	206 mm	+43 mm
Jun	26.1 °C	+1.9 °C	247 mm	-17 mm
Jul	29.5 °C	+1.6 °C	150 mm	-41 mm
Aug	30.4 °C	+1.5 °C	111 mm	-58 mm
Sep	28.8 °C	+2.5 °C	390 mm	+169 mm
Oct	24.2 °C	+2.4 °C	165 mm	+19 mm
Nov	18.4 °C	+1.1 °C	34 mm	-51 mm
Dec	14.5 °C	+2.0 °C	42 mm	-12 mm

The year's extremes

Hottest day

32.3 °C

6 Aug 2025

Coldest day

0.3 °C

8 Feb 2025

Wettest day

138.0 mm

4 Sep 2025

Windiest day

44.7 km/h

13 Apr 2025

Strongest gust

77.8 km/h

7 Feb 2025

Hottest feels-like

40.5 °C

6 Aug 2025

Coldest feels-like

-7.9 °C

8 Feb 2025

Snowiest day

0.5 cm

8 Feb 2025

Sunniest day

13.9 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 Saiki?

Saiki has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 17.0 °C and it receives 1,655 mm of precipitation per year.

What is the hottest day ever recorded in Saiki?

The hottest day measured in Saiki between 1940 and 2025 was 31 July 1958, reaching 33.7 °C.

What is the coldest day in Saiki?

The coldest day measured in Saiki between 1940 and 2025 was 26 February 1981, at -2.5 °C.

Does it snow in Saiki?

Yes. Saiki gets on average 1.2 cm of snow per year and has around 0 frost days.

Has the climate of Saiki warmed?

Yes: Saiki warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Saiki?

The wettest day measured in Saiki between 1940 and 2025 was 11 September 1963, with 383 mm of rain in 24 hours.

What was the windiest day in Saiki?

The windiest day measured in Saiki between 1940 and 2025 was 30 August 2004, with winds reaching 87.1 km/h.

What is the warmest month in Saiki?

The warmest month in Saiki is August (26.9 °C on average); the coldest is January (7.5 °C).

How much does it rain in Saiki?

Saiki receives on average 1,655 mm of precipitation per year, spread over about 133 rainy days.

Is it sunny in Saiki?

Saiki gets on average 8.9 hours of sunshine per day, roughly 3,249 hours per year over 1940-2025.

What is the biggest single-day snowfall in Saiki?

The heaviest 24-hour snowfall measured in Saiki between 1940 and 2025 was 19 January 1984, with 6.1 cm.

Are there tropical nights in Saiki?

Yes: Saiki has on average 113 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Saiki?

In Saiki, between 1940 and 2025, the highest apparent temperature reached 41.2 °C on 8 August 2017, and the lowest was -11.4 °C on 26 February 1981.

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