Xihu climate — normals and trends

Q: What is the climate of Xihu?

Xihu has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 23.0 °C and it receives 1,645 mm of precipitation per year.

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

The hottest day measured in Xihu between 1940 and 2025 was 1 July 2004, reaching 36.5 °C.

Q: What is the coldest day in Xihu?

The coldest day measured in Xihu between 1940 and 2025 was 24 January 2016, at 6.1 °C.

Q: Does it snow in Xihu?

Almost never: Xihu sees virtually no snow, with about 0 frost days per year.

Q: Has the climate of Xihu warmed?

Yes: Xihu warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Xihu?

The wettest day measured in Xihu between 1940 and 2025 was 25 July 2024, with 356 mm of rain in 24 hours.

Q: What was the windiest day in Xihu?

The windiest day measured in Xihu between 1940 and 2025 was 27 September 1969, with winds reaching 80.9 km/h.

Q: What is the warmest month in Xihu?

The warmest month in Xihu is July (28.0 °C on average); the coldest is January (16.5 °C).

Q: How much does it rain in Xihu?

Xihu receives on average 1,645 mm of precipitation per year, spread over about 147 rainy days.

Q: Is it sunny in Xihu?

Xihu gets on average 10.0 hours of sunshine per day, roughly 3,650 hours per year over 1940-2025.

Xihu (Taiwan) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 23.0 °C and it receives 1,645 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 July (28.0 °C on average) and the coldest is January (16.5 °C). Rainfall peaks in June.

Xihu averages 0 frost days, 85 hot days (≥ 30 °C) and 147 rainy days per year.

Xihu has warmed by +1.9 °C between 1940 and 2025, or +0.22 °C per decade. This trend is statistically significant.

The hottest day of the period reached 36.5 °C (on 1 July 2004) and the coldest 6.1 °C (on 24 January 2016).

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

XihuTaiwan

coords: 23.96°, 120.48°
period: 1940–2025 · 86 yrs

CfaHumid subtropicalWarmest monthJulyColdest monthJanuaryWettest monthJuneDriest monthNovember

Mean daily temperature

23.0°C

Average daily high

26.1°C

Average daily low

20.4°C

Annual rainfall

1,645mm

Sunshine / day

10.0h

Mean relative humidity

80%

Average peak wind

18.3km/h

Seasonal range

11.5°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

85 d/yr

Rainy days (≥ 1 mm)

147 d/yr

Annual snowfall

0.0 cm

Average feels-like high

28.8 °C

Average feels-like low

21.9 °C

Average peak gust

33.8 km/h

Tropical nights (≥ 20 °C)

212 d/yr

Solar radiation

17.2 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.9 °C

since 1940

+0.2 °C per decade · r² = 0.74 · 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

36.5 °C

1 July 2004

Coldest day

6.1 °C

24 January 2016

Wettest day

356 mm

25 July 2024

Windiest day

80.9 km/h

27 September 1969

Strongest gust

162.7 km/h

27 September 1969

Hottest feels-like

42.6 °C

2 August 2009

Coldest feels-like

-1.2 °C

16 January 1967

Sunniest day

13.5 h

14 June 1940

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	33.9 °C22 September 2025	10.8 °C28 January 2025	24.1 °C	1,647 mm	140
2024	34.4 °C15 July 2024	9.9 °C23 January 2024	24.4 °C	1,816 mm	132
2023	34.7 °C17 July 2023	9.6 °C28 January 2023	24.0 °C	1,546 mm	115
2022	34.7 °C27 August 2022	11.1 °C26 December 2022	23.8 °C	1,410 mm	119
2021	34.5 °C16 May 2021	9.4 °C8 January 2021	24.1 °C	1,426 mm	132
2020	34.2 °C19 July 2020	10.1 °C31 December 2020	24.4 °C	1,112 mm	143
2019	33.6 °C17 July 2019	13.0 °C28 January 2019	24.2 °C	1,880 mm	105
2018	33.9 °C28 May 2018	9.2 °C13 January 2018	24.1 °C	1,320 mm	117
2017	33.6 °C24 September 2017	11.5 °C10 February 2017	24.1 °C	1,540 mm	124
2016	32.8 °C6 July 2016	6.1 °C24 January 2016	23.7 °C	2,331 mm	118
2015	33.6 °C26 June 2015	9.7 °C23 January 2015	23.8 °C	1,734 mm	104
2014	34.3 °C15 September 2014	9.3 °C21 February 2014	23.7 °C	1,351 mm	119
2013	32.5 °C1 July 2013	11.2 °C27 December 2013	23.6 °C	1,867 mm	100
2012	32.7 °C21 July 2012	10.6 °C31 December 2012	23.6 °C	2,529 mm	95
2011	34.1 °C15 June 2011	10.6 °C16 January 2011	23.4 °C	1,398 mm	111
2010	32.6 °C22 May 2010	9.2 °C14 January 2010	23.6 °C	1,404 mm	112
2009	34.5 °C2 August 2009	9.1 °C11 January 2009	23.8 °C	1,554 mm	107
2008	33.2 °C28 May 2008	11.4 °C13 February 2008	23.8 °C	2,073 mm	120
2007	32.7 °C18 July 2007	8.7 °C29 January 2007	23.8 °C	2,225 mm	95
2006	32.8 °C6 July 2006	10.6 °C6 January 2006	23.9 °C	2,007 mm	89
2005	33.2 °C24 September 2005	8.6 °C6 March 2005	23.4 °C	2,198 mm	110
2004	36.5 °C1 July 2004	9.3 °C25 January 2004	23.6 °C	1,869 mm	113
2003	34.0 °C24 July 2003	11.8 °C6 January 2003	23.9 °C	1,082 mm	120
2002	33.6 °C5 July 2002	11.3 °C5 January 2002	24.0 °C	1,110 mm	114
2001	32.3 °C22 August 2001	11.2 °C26 December 2001	23.5 °C	2,207 mm	78
2000	32.2 °C6 July 2000	11.3 °C27 January 2000	23.4 °C	1,882 mm	80
1999	32.2 °C29 June 1999	8.4 °C22 December 1999	23.5 °C	1,402 mm	90
1998	32.9 °C31 July 1998	10.6 °C5 February 1998	24.0 °C	2,049 mm	107
1997	31.9 °C28 August 1997	10.7 °C12 January 1997	23.2 °C	1,948 mm	62
1996	33.6 °C12 July 1996	10.2 °C2 January 1996	23.2 °C	1,478 mm	103
1995	33.5 °C7 September 1995	9.9 °C6 February 1995	22.9 °C	1,316 mm	96
1994	32.2 °C13 July 1994	10.9 °C4 March 1994	23.5 °C	1,855 mm	80
1993	33.4 °C20 August 1993	9.1 °C31 January 1993	23.4 °C	1,343 mm	118
1992	32.1 °C14 August 1992	9.9 °C25 February 1992	22.7 °C	2,276 mm	65
1991	33.6 °C9 June 1991	8.4 °C28 December 1991	23.5 °C	1,144 mm	119
1990	32.2 °C26 August 1990	10.7 °C1 February 1990	23.2 °C	2,175 mm	70
1989	32.3 °C18 July 1989	10.4 °C11 February 1989	22.8 °C	1,847 mm	88
1988	32.5 °C29 June 1988	10.6 °C12 December 1988	22.8 °C	1,990 mm	92
1987	32.3 °C7 July 1987	9.2 °C5 February 1987	23.0 °C	1,473 mm	73
1986	33.5 °C11 August 1986	7.7 °C1 March 1986	22.7 °C	1,862 mm	86
1985	31.5 °C30 July 1985	8.3 °C17 December 1985	22.6 °C	1,664 mm	49
1984	31.6 °C13 July 1984	8.8 °C7 February 1984	22.4 °C	1,485 mm	83
1983	33.9 °C17 July 1983	11.1 °C31 December 1983	23.1 °C	2,014 mm	122
1982	32.2 °C17 July 1982	10.5 °C19 January 1982	22.9 °C	1,928 mm	76
1981	32.1 °C7 July 1981	9.3 °C13 January 1981	22.9 °C	2,436 mm	65
1980	34.8 °C10 July 1980	9.0 °C31 January 1980	23.4 °C	862 mm	124
1979	32.8 °C4 July 1979	9.4 °C1 February 1979	22.9 °C	1,942 mm	79
1978	32.6 °C25 August 1978	7.8 °C18 February 1978	22.9 °C	2,266 mm	92
1977	33.2 °C4 May 1977	8.1 °C18 February 1977	23.0 °C	1,802 mm	95
1976	32.0 °C24 July 1976	10.2 °C10 December 1976	22.5 °C	1,634 mm	90
1975	31.9 °C9 July 1975	10.0 °C29 December 1975	22.9 °C	1,903 mm	92
1974	33.1 °C8 August 1974	8.0 °C25 February 1974	22.8 °C	2,020 mm	67
1973	31.6 °C19 August 1973	7.8 °C24 December 1973	23.0 °C	1,651 mm	85
1972	31.9 °C8 July 1972	7.9 °C4 March 1972	22.5 °C	2,675 mm	67
1971	33.7 °C20 July 1971	7.9 °C10 January 1971	22.5 °C	1,232 mm	101
1970	32.6 °C16 July 1970	6.2 °C1 February 1970	22.6 °C	1,550 mm	96
1969	34.5 °C26 July 1969	8.5 °C5 February 1969	22.4 °C	1,839 mm	83
1968	33.5 °C6 September 1968	8.8 °C4 March 1968	22.3 °C	1,942 mm	67
1967	32.0 °C28 August 1967	6.7 °C16 January 1967	22.3 °C	1,499 mm	89
1966	31.5 °C15 August 1966	12.4 °C23 February 1966	22.9 °C	2,083 mm	28
1965	30.9 °C27 July 1965	8.1 °C9 January 1965	22.5 °C	1,251 mm	13
1964	33.9 °C7 August 1964	11.4 °C24 January 1964	22.9 °C	1,092 mm	81
1963	35.6 °C5 September 1963	7.1 °C28 January 1963	22.5 °C	1,483 mm	90
1962	32.8 °C18 July 1962	8.6 °C28 January 1962	22.4 °C	1,285 mm	70
1961	32.0 °C3 July 1961	9.4 °C2 February 1961	22.8 °C	1,311 mm	55
1960	32.1 °C30 July 1960	9.2 °C31 December 1960	23.0 °C	2,109 mm	71
1959	31.9 °C5 July 1959	7.5 °C18 January 1959	23.1 °C	1,672 mm	83
1958	32.4 °C11 May 1958	7.1 °C13 February 1958	22.8 °C	1,508 mm	94
1957	32.4 °C21 August 1957	8.9 °C10 February 1957	22.6 °C	1,271 mm	95
1956	33.8 °C7 July 1956	8.7 °C10 January 1956	22.8 °C	1,847 mm	99
1955	33.3 °C13 July 1955	7.7 °C22 February 1955	22.5 °C	1,421 mm	69
1954	33.1 °C15 August 1954	11.5 °C6 February 1954	23.4 °C	697 mm	148
1953	33.8 °C12 August 1953	10.2 °C8 January 1953	23.0 °C	1,338 mm	102
1952	32.7 °C6 July 1952	9.3 °C19 February 1952	23.0 °C	1,253 mm	65
1951	33.3 °C31 July 1951	10.6 °C16 December 1951	22.5 °C	1,796 mm	43
1950	31.9 °C19 July 1950	9.6 °C10 December 1950	22.4 °C	2,094 mm	36
1949	33.1 °C8 July 1949	8.6 °C17 January 1949	23.0 °C	1,126 mm	74
1948	31.1 °C20 August 1948	8.1 °C17 January 1948	22.4 °C	1,048 mm	38
1947	31.3 °C27 August 1947	10.8 °C21 February 1947	22.1 °C	1,680 mm	38
1946	32.3 °C6 September 1946	10.0 °C9 February 1946	22.8 °C	702 mm	65
1945	30.9 °C23 July 1945	11.0 °C18 January 1945	21.8 °C	1,677 mm	8
1944	30.6 °C7 April 1944	10.6 °C8 January 1944	22.3 °C	1,111 mm	5
1943	31.4 °C29 May 1943	9.0 °C12 January 1943	22.0 °C	806 mm	9
1942	31.1 °C11 August 1942	10.3 °C7 December 1942	22.3 °C	1,504 mm	4
1941	30.1 °C16 August 1941	8.9 °C5 February 1941	22.3 °C	1,813 mm	4
1940	29.8 °C13 July 1940	8.7 °C24 January 1940	21.7 °C	1,445 mm	0

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

27.1 °C

+1.0 °C

Hot days (≥ 30 °C)

140 d/yr

+55

Frost days (< 0 °C)

0 d/yr

Annual rainfall

1647 mm

+2 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	19.6 °C	-0.3 °C	27 mm	-19 mm
Feb	19.7 °C	-0.7 °C	98 mm	+25 mm
Mar	23.4 °C	+0.6 °C	103 mm	+0 mm
Apr	26.7 °C	+0.8 °C	98 mm	-33 mm
May	29.7 °C	+1.3 °C	170 mm	-54 mm
Jun	30.9 °C	+1.1 °C	248 mm	-41 mm
Jul	30.5 °C	-0.3 °C	572 mm	+358 mm
Aug	31.1 °C	+0.8 °C	171 mm	-100 mm
Sep	31.8 °C	+2.1 °C	55 mm	-108 mm
Oct	30.6 °C	+2.7 °C	60 mm	+8 mm
Nov	26.5 °C	+1.2 °C	30 mm	-8 mm
Dec	23.8 °C	+2.0 °C	15 mm	-26 mm

The year's extremes

Hottest day

33.9 °C

22 Sep 2025

Coldest day

10.8 °C

28 Jan 2025

Wettest day

87.5 mm

7 Jul 2025

Windiest day

54.1 km/h

13 Aug 2025

Strongest gust

104.8 km/h

13 Aug 2025

Hottest feels-like

40.0 °C

24 Aug 2025

Coldest feels-like

5.3 °C

28 Jan 2025

Sunniest day

13.2 h

15 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 Xihu?

Xihu has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 23.0 °C and it receives 1,645 mm of precipitation per year.

What is the hottest day ever recorded in Xihu?

The hottest day measured in Xihu between 1940 and 2025 was 1 July 2004, reaching 36.5 °C.

What is the coldest day in Xihu?

The coldest day measured in Xihu between 1940 and 2025 was 24 January 2016, at 6.1 °C.

Does it snow in Xihu?

Almost never: Xihu sees virtually no snow, with about 0 frost days per year.

Has the climate of Xihu warmed?

Yes: Xihu warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Xihu?

The wettest day measured in Xihu between 1940 and 2025 was 25 July 2024, with 356 mm of rain in 24 hours.

What was the windiest day in Xihu?

The windiest day measured in Xihu between 1940 and 2025 was 27 September 1969, with winds reaching 80.9 km/h.

What is the warmest month in Xihu?

The warmest month in Xihu is July (28.0 °C on average); the coldest is January (16.5 °C).

How much does it rain in Xihu?

Xihu receives on average 1,645 mm of precipitation per year, spread over about 147 rainy days.

Is it sunny in Xihu?

Xihu gets on average 10.0 hours of sunshine per day, roughly 3,650 hours per year over 1940-2025.

Are there tropical nights in Xihu?

Yes: Xihu has on average 212 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Xihu?

In Xihu, between 1940 and 2025, the highest apparent temperature reached 42.6 °C on 2 August 2009, and the lowest was -1.2 °C on 16 January 1967.

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