Tondalam climate — normals and trends

Q: What is the climate of Tondalam?

Tondalam has a tropical monsoon climate (Köppen Am). Over 1940-2025, the average annual temperature is 22.3 °C and it receives 2,784 mm of precipitation per year.

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

The hottest day measured in Tondalam between 1940 and 2025 was 8 March 1958, reaching 35.4 °C.

Q: What is the coldest day in Tondalam?

The coldest day measured in Tondalam between 1940 and 2025 was 1 January 1951, at 9.5 °C.

Q: Does it snow in Tondalam?

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

Q: Has the climate of Tondalam warmed?

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

Q: What is the wettest day in Tondalam?

The wettest day measured in Tondalam between 1940 and 2025 was 24 May 1957, with 333 mm of rain in 24 hours.

Q: What was the windiest day in Tondalam?

The windiest day measured in Tondalam between 1940 and 2025 was 7 June 2000, with winds reaching 18.5 km/h.

Q: What is the warmest month in Tondalam?

The warmest month in Tondalam is April (24.2 °C on average); the coldest is July (21.3 °C).

Q: How much does it rain in Tondalam?

Tondalam receives on average 2,784 mm of precipitation per year, spread over about 250 rainy days.

Q: Is it sunny in Tondalam?

Tondalam gets on average 9.6 hours of sunshine per day, roughly 3,504 hours per year over 1940-2025.

Tondalam (India) has a tropical monsoon climate (Am) under the Köppen-Geiger classification. Its mean annual temperature is 22.3 °C and it receives 2,784 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 April (24.2 °C on average) and the coldest is July (21.3 °C). Rainfall peaks in July.

Tondalam averages 0 frost days, 54 hot days (≥ 30 °C) and 250 rainy days per year.

Tondalam 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 35.4 °C (on 8 March 1958) and the coldest 9.5 °C (on 1 January 1951).

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

TondalamTamil Nadu

coords: 11.50°, 76.35°
period: 1940–2025 · 86 yrs

AmTropical monsoonWarmest monthAprilColdest monthJulyWettest monthJulyDriest monthJanuary

Mean daily temperature

22.3°C

Average daily high

27.1°C

Average daily low

18.7°C

Annual rainfall

2,784mm

Sunshine / day

9.6h

Mean relative humidity

83%

Average peak wind

7.6km/h

Seasonal range

2.9°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

54 d/yr

Rainy days (≥ 1 mm)

250 d/yr

Annual snowfall

0.0 cm

Average feels-like high

30.8 °C

Average feels-like low

21.0 °C

Average peak gust

31.1 km/h

Tropical nights (≥ 20 °C)

95 d/yr

Solar radiation

18.0 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.8 °C

since 1940

+0.2 °C per decade · r² = 0.82 · 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

35.4 °C

8 March 1958

Coldest day

9.5 °C

1 January 1951

Wettest day

333 mm

24 May 1957

Windiest day

18.5 km/h

7 June 2000

Strongest gust

87.5 km/h

23 July 1989

Hottest feels-like

39.1 °C

10 April 1983

Coldest feels-like

7.3 °C

2 January 1951

Sunniest day

12.1 h

21 May 1947

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	32.9 °C28 February 2025	12.3 °C20 December 2025	22.9 °C	3,130 mm	57
2024	33.4 °C28 April 2024	15.1 °C27 January 2024	23.5 °C	2,973 mm	78
2023	33.3 °C13 April 2023	12.9 °C20 January 2023	23.4 °C	2,412 mm	71
2022	33.0 °C14 March 2022	14.2 °C24 January 2022	22.9 °C	3,588 mm	56
2021	32.4 °C10 March 2021	14.1 °C11 February 2021	23.0 °C	3,189 mm	39
2020	33.4 °C1 April 2020	14.8 °C12 January 2020	23.4 °C	2,821 mm	67
2019	33.1 °C25 March 2019	12.3 °C21 January 2019	23.3 °C	3,214 mm	49
2018	32.6 °C6 March 2018	13.6 °C2 February 2018	23.0 °C	3,528 mm	50
2017	32.6 °C25 February 2017	13.2 °C30 December 2017	23.1 °C	2,636 mm	38
2016	34.1 °C27 April 2016	14.1 °C5 January 2016	23.4 °C	1,855 mm	97
2015	32.6 °C29 March 2015	13.9 °C12 January 2015	23.3 °C	2,692 mm	47
2014	34.9 °C30 March 2014	14.4 °C29 January 2014	23.3 °C	3,146 mm	57
2013	33.2 °C1 March 2013	13.3 °C15 January 2013	22.9 °C	3,062 mm	63
2012	34.5 °C25 March 2012	13.7 °C16 November 2012	23.1 °C	2,419 mm	95
2011	33.3 °C15 March 2011	12.0 °C15 January 2011	22.7 °C	3,350 mm	60
2010	34.8 °C9 March 2010	14.3 °C8 February 2010	23.1 °C	3,516 mm	77
2009	34.3 °C7 March 2009	12.8 °C1 January 2009	23.0 °C	3,271 mm	70
2008	33.3 °C6 March 2008	12.5 °C31 December 2008	22.7 °C	2,724 mm	43
2007	33.1 °C23 March 2007	12.3 °C26 November 2007	22.9 °C	3,298 mm	87
2006	33.3 °C20 February 2006	12.2 °C8 February 2006	22.6 °C	2,864 mm	50
2005	33.8 °C27 February 2005	12.6 °C19 November 2005	22.8 °C	2,627 mm	55
2004	35.1 °C18 March 2004	12.9 °C19 December 2004	22.7 °C	2,718 mm	70
2003	33.1 °C7 March 2003	11.8 °C9 December 2003	22.7 °C	2,689 mm	39
2002	33.4 °C12 March 2002	11.8 °C15 December 2002	22.7 °C	2,125 mm	55
2001	32.1 °C24 March 2001	11.7 °C11 December 2001	22.5 °C	2,264 mm	62
2000	32.9 °C29 March 2000	11.1 °C14 December 2000	22.3 °C	2,513 mm	36
1999	33.6 °C28 February 1999	12.1 °C26 January 1999	22.3 °C	2,256 mm	55
1998	34.7 °C20 March 1998	12.1 °C25 December 1998	22.9 °C	2,677 mm	82
1997	34.4 °C11 March 1997	13.4 °C29 January 1997	22.6 °C	2,643 mm	43
1996	34.5 °C23 March 1996	11.8 °C27 January 1996	22.4 °C	3,161 mm	54
1995	33.3 °C20 March 1995	12.4 °C15 December 1995	22.6 °C	2,573 mm	52
1994	34.7 °C18 March 1994	11.9 °C14 December 1994	22.4 °C	2,819 mm	39
1993	32.7 °C6 March 1993	11.4 °C9 January 1993	22.2 °C	2,914 mm	38
1992	34.2 °C26 March 1992	10.8 °C28 December 1992	22.2 °C	2,884 mm	48
1991	33.9 °C29 March 1991	11.7 °C9 December 1991	22.6 °C	3,041 mm	73
1990	34.2 °C19 March 1990	11.1 °C14 January 1990	22.4 °C	2,332 mm	80
1989	33.0 °C1 March 1989	10.9 °C4 February 1989	22.5 °C	2,775 mm	69
1988	33.6 °C4 April 1988	12.9 °C24 December 1988	22.5 °C	2,498 mm	52
1987	34.7 °C16 April 1987	13.1 °C5 January 1987	22.9 °C	1,870 mm	90
1986	33.1 °C28 March 1986	12.8 °C3 January 1986	22.5 °C	2,077 mm	47
1985	33.8 °C10 March 1985	12.1 °C30 November 1985	22.3 °C	2,109 mm	43
1984	32.1 °C22 March 1984	11.1 °C18 December 1984	22.2 °C	2,782 mm	26
1983	34.1 °C12 March 1983	11.5 °C12 January 1983	22.7 °C	2,530 mm	82
1982	34.2 °C22 March 1982	12.3 °C17 January 1982	22.5 °C	2,055 mm	70
1981	34.0 °C2 March 1981	9.7 °C12 December 1981	22.3 °C	2,793 mm	57
1980	34.1 °C25 February 1980	12.2 °C15 January 1980	22.6 °C	2,755 mm	62
1979	33.8 °C8 April 1979	12.4 °C29 December 1979	22.7 °C	2,604 mm	44
1978	32.3 °C9 March 1978	12.6 °C18 January 1978	22.2 °C	2,774 mm	36
1977	32.3 °C15 March 1977	12.4 °C6 January 1977	22.2 °C	2,611 mm	33
1976	33.1 °C2 March 1976	11.8 °C22 January 1976	22.2 °C	2,186 mm	47
1975	33.0 °C2 April 1975	12.1 °C1 January 1975	22.0 °C	2,881 mm	58
1974	33.5 °C10 March 1974	12.0 °C31 December 1974	22.0 °C	2,209 mm	67
1973	34.7 °C20 March 1973	13.1 °C24 January 1973	22.3 °C	2,568 mm	58
1972	33.1 °C13 March 1972	10.3 °C12 January 1972	22.2 °C	2,218 mm	55
1971	32.7 °C14 March 1971	12.0 °C21 December 1971	21.8 °C	2,592 mm	23
1970	32.6 °C9 March 1970	11.3 °C22 December 1970	22.1 °C	2,681 mm	40
1969	32.5 °C8 March 1969	14.1 °C13 January 1969	22.5 °C	2,779 mm	35
1968	31.7 °C8 March 1968	10.9 °C13 December 1968	22.1 °C	3,247 mm	16
1967	33.2 °C23 February 1967	11.6 °C6 February 1967	22.2 °C	3,518 mm	53
1966	32.0 °C30 March 1966	13.1 °C15 December 1966	21.9 °C	3,609 mm	29
1965	32.1 °C14 March 1965	12.4 °C15 January 1965	21.7 °C	3,086 mm	35
1964	34.0 °C15 March 1964	11.6 °C13 January 1964	21.9 °C	3,196 mm	82
1963	32.1 °C17 March 1963	12.2 °C24 January 1963	21.8 °C	2,977 mm	31
1962	33.6 °C31 March 1962	12.0 °C17 January 1962	22.0 °C	3,402 mm	25
1961	33.8 °C12 March 1961	12.4 °C26 January 1961	22.0 °C	3,768 mm	45
1960	33.5 °C30 March 1960	12.3 °C21 December 1960	22.0 °C	2,832 mm	62
1959	34.6 °C22 March 1959	12.0 °C24 December 1959	22.4 °C	2,737 mm	80
1958	35.4 °C8 March 1958	13.0 °C9 January 1958	22.4 °C	3,289 mm	60
1957	33.5 °C25 March 1957	12.0 °C7 January 1957	22.3 °C	3,021 mm	88
1956	33.8 °C27 March 1956	11.5 °C6 January 1956	21.5 °C	2,772 mm	59
1955	33.2 °C19 March 1955	11.2 °C20 December 1955	21.7 °C	3,267 mm	50
1954	33.5 °C2 March 1954	10.7 °C8 December 1954	21.8 °C	3,548 mm	49
1953	33.8 °C25 April 1953	12.0 °C25 December 1953	21.8 °C	1,922 mm	78
1952	34.2 °C12 April 1952	12.2 °C20 January 1952	21.7 °C	2,051 mm	81
1951	34.6 °C1 March 1951	9.5 °C1 January 1951	21.9 °C	2,161 mm	85
1950	33.6 °C25 April 1950	11.7 °C20 December 1950	21.4 °C	1,362 mm	53
1949	33.9 °C18 April 1949	11.5 °C12 November 1949	21.2 °C	1,892 mm	45
1948	32.7 °C24 February 1948	13.4 °C15 December 1948	22.0 °C	2,527 mm	30
1947	30.7 °C18 March 1947	12.9 °C15 January 1947	21.7 °C	2,016 mm	11
1946	34.6 °C14 March 1946	10.6 °C12 January 1946	21.5 °C	3,432 mm	47
1945	34.3 °C27 March 1945	11.3 °C13 December 1945	21.7 °C	3,052 mm	51
1944	31.0 °C16 May 1944	11.2 °C10 December 1944	21.6 °C	3,574 mm	15
1943	32.9 °C23 February 1943	11.0 °C2 January 1943	20.8 °C	4,069 mm	42
1942	33.5 °C12 March 1942	11.2 °C31 December 1942	21.3 °C	2,430 mm	57
1941	32.8 °C16 March 1941	10.2 °C26 December 1941	21.3 °C	3,061 mm	40
1940	34.5 °C5 April 1940	11.4 °C15 January 1940	21.3 °C	3,345 mm	60

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

27.5 °C

+0.4 °C

Hot days (≥ 30 °C)

57 d/yr

Frost days (< 0 °C)

0 d/yr

Annual rainfall

3130 mm

+346 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	28.9 °C	+0.5 °C	22 mm	-5 mm
Feb	31.2 °C	+1.3 °C	16 mm	-12 mm
Mar	30.7 °C	0.0 °C	117 mm	+41 mm
Apr	28.8 °C	-0.7 °C	203 mm	+20 mm
May	26.7 °C	-0.9 °C	609 mm	+311 mm
Jun	25.8 °C	+1.1 °C	520 mm	+11 mm
Jul	24.7 °C	+0.6 °C	600 mm	+46 mm
Aug	25.3 °C	+0.8 °C	468 mm	+83 mm
Sep	26.4 °C	+0.9 °C	115 mm	-117 mm
Oct	26.7 °C	+0.5 °C	347 mm	+70 mm
Nov	27.0 °C	+0.4 °C	79 mm	-83 mm
Dec	27.7 °C	+0.5 °C	35 mm	-20 mm

The year's extremes

Hottest day

32.9 °C

28 Feb 2025

Coldest day

12.3 °C

20 Dec 2025

Wettest day

93.3 mm

15 Jun 2025

Windiest day

16.7 km/h

15 Jun 2025

Strongest gust

69.1 km/h

15 Jun 2025

Hottest feels-like

37.3 °C

8 Apr 2025

Coldest feels-like

11.5 °C

20 Dec 2025

Sunniest day

12.0 h

9 May 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 Tondalam?

Tondalam has a tropical monsoon climate (Köppen Am). Over 1940-2025, the average annual temperature is 22.3 °C and it receives 2,784 mm of precipitation per year.

What is the hottest day ever recorded in Tondalam?

The hottest day measured in Tondalam between 1940 and 2025 was 8 March 1958, reaching 35.4 °C.

What is the coldest day in Tondalam?

The coldest day measured in Tondalam between 1940 and 2025 was 1 January 1951, at 9.5 °C.

Does it snow in Tondalam?

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

Has the climate of Tondalam warmed?

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

What is the wettest day in Tondalam?

The wettest day measured in Tondalam between 1940 and 2025 was 24 May 1957, with 333 mm of rain in 24 hours.

What was the windiest day in Tondalam?

The windiest day measured in Tondalam between 1940 and 2025 was 7 June 2000, with winds reaching 18.5 km/h.

What is the warmest month in Tondalam?

The warmest month in Tondalam is April (24.2 °C on average); the coldest is July (21.3 °C).

How much does it rain in Tondalam?

Tondalam receives on average 2,784 mm of precipitation per year, spread over about 250 rainy days.

Is it sunny in Tondalam?

Tondalam gets on average 9.6 hours of sunshine per day, roughly 3,504 hours per year over 1940-2025.

Are there tropical nights in Tondalam?

Yes: Tondalam has on average 95 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Tondalam?

In Tondalam, between 1940 and 2025, the highest apparent temperature reached 39.1 °C on 10 April 1983, and the lowest was 7.3 °C on 2 January 1951.

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