Tainan climate — normals and trends

Q: What is the climate of Tainan?

Tainan has a humid subtropical, dry winter climate (Köppen Cwa). Over 1940-2025, the average annual temperature is 24.1 °C and it receives 1,901 mm of precipitation per year.

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

The hottest day measured in Tainan between 1940 and 2025 was 10 July 1962, reaching 36.2 °C.

Q: What is the coldest day in Tainan?

The coldest day measured in Tainan between 1940 and 2025 was 1 February 1970, at 6.2 °C.

Q: Does it snow in Tainan?

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

Q: Has the climate of Tainan warmed?

Yes: Tainan warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Tainan?

The wettest day measured in Tainan between 1940 and 2025 was 8 August 2009, with 423 mm of rain in 24 hours.

Q: What was the windiest day in Tainan?

The windiest day measured in Tainan between 1940 and 2025 was 27 September 2016, with winds reaching 74.6 km/h.

Q: What is the warmest month in Tainan?

The warmest month in Tainan is July (28.5 °C on average); the coldest is January (17.9 °C).

Q: How much does it rain in Tainan?

Tainan receives on average 1,901 mm of precipitation per year, spread over about 150 rainy days.

Q: Is it sunny in Tainan?

Tainan gets on average 9.7 hours of sunshine per day, roughly 3,540 hours per year over 1940-2025.

Tainan (Taiwan) has a humid subtropical, dry winter climate (Cwa) under the Köppen-Geiger classification. Its mean annual temperature is 24.1 °C and it receives 1,901 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 (28.5 °C on average) and the coldest is January (17.9 °C). Rainfall peaks in June.

Tainan averages 0 frost days, 126 hot days (≥ 30 °C) and 150 rainy days per year.

Tainan has warmed by +1.8 °C between 1940 and 2025, or +0.21 °C per decade. This trend is statistically significant.

The hottest day of the period reached 36.2 °C (on 10 July 1962) and the coldest 6.2 °C (on 1 February 1970).

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

TainanTaiwan

coords: 22.99°, 120.21°
period: 1940–2025 · 86 yrs

CwaHumid subtropical, dry winterWarmest monthJulyColdest monthJanuaryWettest monthJuneDriest monthNovember

Mean daily temperature

24.1°C

Average daily high

27.5°C

Average daily low

21.4°C

Annual rainfall

1,901mm

Sunshine / day

9.7h

Mean relative humidity

81%

Average peak wind

14.8km/h

Seasonal range

10.6°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

126 d/yr

Rainy days (≥ 1 mm)

150 d/yr

Annual snowfall

0.0 cm

Average feels-like high

31.4 °C

Average feels-like low

24.0 °C

Average peak gust

29.0 km/h

Tropical nights (≥ 20 °C)

233 d/yr

Solar radiation

16.9 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.8 °C

since 1940

+0.2 °C per decade · r² = 0.78 · 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

36.2 °C

10 July 1962

Coldest day

6.2 °C

1 February 1970

Wettest day

423 mm

8 August 2009

Windiest day

74.6 km/h

27 September 2016

Strongest gust

138.2 km/h

8 August 2015

Hottest feels-like

43.9 °C

30 June 2001

Coldest feels-like

0.3 °C

24 January 2016

Sunniest day

13.4 h

20 June 1946

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	33.7 °C1 July 2025	11.8 °C9 February 2025	25.0 °C	1,912 mm	161
2024	34.7 °C3 July 2024	10.9 °C23 January 2024	25.4 °C	2,509 mm	175
2023	34.0 °C17 July 2023	10.9 °C29 January 2023	25.1 °C	1,951 mm	150
2022	34.1 °C27 August 2022	10.3 °C25 December 2022	24.8 °C	1,368 mm	155
2021	34.7 °C14 May 2021	9.9 °C13 January 2021	24.9 °C	1,939 mm	152
2020	35.1 °C16 May 2020	10.8 °C31 January 2020	25.3 °C	1,442 mm	167
2019	33.6 °C17 July 2019	13.4 °C23 January 2019	25.2 °C	2,169 mm	142
2018	33.6 °C5 June 2018	9.5 °C13 January 2018	24.8 °C	2,254 mm	138
2017	33.8 °C11 October 2017	12.7 °C10 February 2017	25.0 °C	1,558 mm	150
2016	34.3 °C4 July 2016	6.9 °C24 January 2016	24.8 °C	2,901 mm	157
2015	34.3 °C21 June 2015	11.7 °C10 February 2015	24.9 °C	2,051 mm	143
2014	35.1 °C15 September 2014	10.5 °C21 February 2014	24.7 °C	1,537 mm	142
2013	34.6 °C1 July 2013	11.7 °C28 December 2013	24.7 °C	1,990 mm	132
2012	34.3 °C23 July 2012	11.6 °C31 December 2012	24.8 °C	2,731 mm	140
2011	35.0 °C17 June 2011	11.7 °C16 January 2011	24.4 °C	1,601 mm	136
2010	34.0 °C14 July 2010	11.1 °C14 January 2010	24.9 °C	2,082 mm	155
2009	34.2 °C25 June 2009	9.8 °C14 January 2009	24.9 °C	2,125 mm	139
2008	33.3 °C5 July 2008	12.0 °C10 February 2008	24.7 °C	2,209 mm	150
2007	33.9 °C3 July 2007	10.3 °C29 January 2007	24.9 °C	2,372 mm	129
2006	34.5 °C28 June 2006	11.9 °C7 January 2006	25.0 °C	1,933 mm	135
2005	34.3 °C30 July 2005	9.9 °C6 March 2005	24.6 °C	2,767 mm	153
2004	33.2 °C28 June 2004	10.6 °C25 January 2004	24.6 °C	1,815 mm	140
2003	35.8 °C19 July 2003	13.0 °C6 January 2003	24.8 °C	1,098 mm	150
2002	32.9 °C1 July 2002	12.1 °C3 January 2002	24.8 °C	1,519 mm	147
2001	34.9 °C1 July 2001	11.3 °C25 December 2001	24.4 °C	2,830 mm	125
2000	33.7 °C11 July 2000	11.1 °C28 January 2000	24.4 °C	2,034 mm	123
1999	33.1 °C23 July 1999	9.3 °C22 December 1999	24.4 °C	1,896 mm	125
1998	34.0 °C27 June 1998	12.2 °C5 February 1998	25.0 °C	2,318 mm	151
1997	33.3 °C30 July 1997	11.0 °C12 January 1997	24.2 °C	2,157 mm	111
1996	35.4 °C21 July 1996	11.3 °C3 January 1996	24.2 °C	1,494 mm	119
1995	33.2 °C3 June 1995	10.4 °C6 February 1995	24.1 °C	1,371 mm	142
1994	33.2 °C22 June 1994	12.5 °C22 January 1994	24.5 °C	2,030 mm	133
1993	34.2 °C1 August 1993	9.7 °C31 January 1993	24.3 °C	1,321 mm	141
1992	34.1 °C21 July 1992	10.7 °C15 January 1992	23.8 °C	2,661 mm	107
1991	36.1 °C9 June 1991	9.1 °C28 December 1991	24.5 °C	1,574 mm	135
1990	33.5 °C15 June 1990	11.8 °C1 February 1990	24.3 °C	2,011 mm	115
1989	35.2 °C21 July 1989	11.1 °C12 February 1989	24.0 °C	1,902 mm	116
1988	33.9 °C28 June 1988	11.0 °C13 December 1988	24.0 °C	2,317 mm	134
1987	33.4 °C7 July 1987	10.5 °C14 January 1987	24.3 °C	1,743 mm	130
1986	33.4 °C22 June 1986	8.5 °C2 March 1986	23.8 °C	2,019 mm	107
1985	32.5 °C15 May 1985	9.3 °C17 December 1985	23.7 °C	1,915 mm	114
1984	32.9 °C9 June 1984	10.1 °C7 February 1984	23.7 °C	1,363 mm	125
1983	34.6 °C16 July 1983	11.7 °C30 December 1983	24.0 °C	2,261 mm	139
1982	33.8 °C16 July 1982	11.7 °C19 January 1982	24.0 °C	2,280 mm	120
1981	34.7 °C2 July 1981	9.9 °C13 January 1981	24.1 °C	2,547 mm	119
1980	35.7 °C25 June 1980	10.3 °C31 January 1980	24.4 °C	886 mm	153
1979	34.2 °C25 June 1979	10.3 °C1 February 1979	24.0 °C	2,029 mm	116
1978	33.8 °C24 August 1978	9.1 °C18 February 1978	24.0 °C	2,335 mm	137
1977	34.0 °C3 May 1977	9.5 °C18 February 1977	24.1 °C	2,338 mm	145
1976	33.5 °C25 June 1976	11.4 °C8 February 1976	23.6 °C	1,712 mm	135
1975	34.1 °C19 June 1975	10.0 °C30 December 1975	24.0 °C	2,529 mm	160
1974	33.5 °C1 August 1974	8.8 °C25 February 1974	23.9 °C	2,359 mm	133
1973	33.3 °C31 May 1973	8.0 °C25 December 1973	24.2 °C	2,152 mm	151
1972	34.1 °C30 June 1972	8.8 °C4 March 1972	23.6 °C	3,035 mm	109
1971	34.8 °C27 June 1971	9.5 °C5 January 1971	23.5 °C	1,528 mm	122
1970	35.0 °C28 June 1970	6.2 °C1 February 1970	23.8 °C	1,519 mm	141
1969	34.4 °C22 July 1969	9.2 °C5 February 1969	23.7 °C	1,858 mm	121
1968	33.1 °C18 July 1968	10.3 °C12 February 1968	23.3 °C	2,315 mm	102
1967	33.6 °C26 June 1967	8.0 °C16 January 1967	23.4 °C	1,531 mm	127
1966	33.0 °C15 August 1966	12.8 °C2 January 1966	24.0 °C	2,460 mm	77
1965	32.0 °C9 April 1965	9.8 °C9 January 1965	23.7 °C	1,719 mm	81
1964	33.4 °C1 July 1964	12.2 °C2 February 1964	23.9 °C	1,201 mm	143
1963	35.1 °C19 May 1963	8.2 °C16 January 1963	23.8 °C	1,093 mm	148
1962	36.2 °C10 July 1962	10.0 °C29 January 1962	23.7 °C	1,209 mm	135
1961	32.5 °C18 July 1961	10.5 °C18 January 1961	23.8 °C	1,788 mm	108
1960	33.7 °C24 June 1960	10.2 °C31 December 1960	24.1 °C	2,233 mm	139
1959	32.8 °C27 July 1959	8.4 °C18 January 1959	24.1 °C	1,878 mm	118
1958	33.6 °C2 May 1958	7.3 °C14 February 1958	23.8 °C	1,655 mm	152
1957	33.9 °C16 July 1957	9.3 °C11 February 1957	23.7 °C	1,495 mm	130
1956	35.3 °C5 June 1956	9.9 °C8 January 1956	23.9 °C	2,117 mm	143
1955	32.8 °C30 June 1955	8.6 °C11 January 1955	23.6 °C	1,690 mm	123
1954	33.7 °C25 May 1954	11.9 °C18 December 1954	24.2 °C	1,033 mm	144
1953	34.2 °C12 August 1953	10.1 °C8 January 1953	24.0 °C	1,426 mm	126
1952	33.4 °C4 July 1952	10.5 °C20 January 1952	24.0 °C	1,568 mm	122
1951	33.1 °C31 July 1951	10.7 °C16 December 1951	23.6 °C	2,199 mm	94
1950	32.3 °C18 July 1950	10.3 °C10 December 1950	23.3 °C	2,456 mm	80
1949	33.3 °C26 May 1949	9.9 °C17 January 1949	24.0 °C	1,680 mm	111
1948	32.0 °C17 August 1948	9.1 °C16 January 1948	23.5 °C	1,583 mm	85
1947	33.0 °C25 August 1947	11.4 °C24 February 1947	23.3 °C	1,518 mm	98
1946	34.2 °C17 June 1946	9.9 °C9 February 1946	23.9 °C	862 mm	131
1945	32.3 °C6 July 1945	11.4 °C18 January 1945	22.9 °C	1,994 mm	72
1944	31.3 °C27 April 1944	11.8 °C18 January 1944	23.3 °C	1,642 mm	52
1943	33.2 °C10 May 1943	10.3 °C14 January 1943	23.0 °C	1,105 mm	59
1942	31.1 °C10 July 1942	10.9 °C7 December 1942	23.3 °C	1,917 mm	55
1941	31.3 °C25 June 1941	10.1 °C5 February 1941	23.3 °C	2,050 mm	58
1940	31.3 °C27 July 1940	9.5 °C5 January 1940	22.8 °C	1,948 mm	42

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

28.2 °C

+0.7 °C

Hot days (≥ 30 °C)

161 d/yr

+35

Frost days (< 0 °C)

0 d/yr

Annual rainfall

1912 mm

+11 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	21.2 °C	-0.7 °C	28 mm	-14 mm
Feb	21.7 °C	-1.0 °C	75 mm	+27 mm
Mar	25.0 °C	-0.1 °C	65 mm	+6 mm
Apr	28.0 °C	+0.1 °C	43 mm	-61 mm
May	30.9 °C	+1.1 °C	184 mm	-91 mm
Jun	31.9 °C	+1.2 °C	338 mm	-44 mm
Jul	30.9 °C	-0.5 °C	700 mm	+413 mm
Aug	31.7 °C	+0.7 °C	315 mm	-58 mm
Sep	32.0 °C	+1.3 °C	61 mm	-133 mm
Oct	31.4 °C	+2.3 °C	19 mm	-42 mm
Nov	27.4 °C	+0.8 °C	70 mm	+33 mm
Dec	25.4 °C	+2.0 °C	15 mm	-24 mm

The year's extremes

Hottest day

33.7 °C

1 Jul 2025

Coldest day

11.8 °C

9 Feb 2025

Wettest day

100.3 mm

13 Jun 2025

Windiest day

47.0 km/h

13 Aug 2025

Strongest gust

101.9 km/h

13 Aug 2025

Hottest feels-like

41.9 °C

23 Aug 2025

Coldest feels-like

7.8 °C

28 Jan 2025

Sunniest day

12.9 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 Tainan?

Tainan has a humid subtropical, dry winter climate (Köppen Cwa). Over 1940-2025, the average annual temperature is 24.1 °C and it receives 1,901 mm of precipitation per year.

What is the hottest day ever recorded in Tainan?

The hottest day measured in Tainan between 1940 and 2025 was 10 July 1962, reaching 36.2 °C.

What is the coldest day in Tainan?

The coldest day measured in Tainan between 1940 and 2025 was 1 February 1970, at 6.2 °C.

Does it snow in Tainan?

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

Has the climate of Tainan warmed?

Yes: Tainan warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Tainan?

The wettest day measured in Tainan between 1940 and 2025 was 8 August 2009, with 423 mm of rain in 24 hours.

What was the windiest day in Tainan?

The windiest day measured in Tainan between 1940 and 2025 was 27 September 2016, with winds reaching 74.6 km/h.

What is the warmest month in Tainan?

The warmest month in Tainan is July (28.5 °C on average); the coldest is January (17.9 °C).

How much does it rain in Tainan?

Tainan receives on average 1,901 mm of precipitation per year, spread over about 150 rainy days.

Is it sunny in Tainan?

Tainan gets on average 9.7 hours of sunshine per day, roughly 3,540 hours per year over 1940-2025.

Are there tropical nights in Tainan?

Yes: Tainan has on average 233 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Tainan?

In Tainan, between 1940 and 2025, the highest apparent temperature reached 43.9 °C on 30 June 2001, and the lowest was 0.3 °C on 24 January 2016.

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