Coonoor climate — normals and trends

Q: What is the climate of Coonoor?

Coonoor has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 20.8 °C and it receives 1,756 mm of precipitation per year.

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

The hottest day measured in Coonoor between 1940 and 2025 was 30 April 2016, reaching 33.3 °C.

Q: What is the coldest day in Coonoor?

The coldest day measured in Coonoor between 1940 and 2025 was 1 January 1951, at 9.2 °C.

Q: Does it snow in Coonoor?

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

Q: Has the climate of Coonoor warmed?

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

Q: What is the wettest day in Coonoor?

The wettest day measured in Coonoor between 1940 and 2025 was 21 October 1963, with 186 mm of rain in 24 hours.

Q: What was the windiest day in Coonoor?

The windiest day measured in Coonoor between 1940 and 2025 was 27 June 1979, with winds reaching 22.1 km/h.

Q: What is the warmest month in Coonoor?

The warmest month in Coonoor is April (23.3 °C on average); the coldest is December (18.9 °C).

Q: How much does it rain in Coonoor?

Coonoor receives on average 1,756 mm of precipitation per year, spread over about 211 rainy days.

Q: Is it sunny in Coonoor?

Coonoor gets on average 10.1 hours of sunshine per day, roughly 3,687 hours per year over 1940-2025.

Coonoor (India) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 20.8 °C and it receives 1,756 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 (23.3 °C on average) and the coldest is December (18.9 °C). Rainfall peaks in July.

Coonoor averages 0 frost days, 17 hot days (≥ 30 °C) and 211 rainy days per year.

Coonoor 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 33.3 °C (on 30 April 2016) and the coldest 9.2 °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

CoonoorTamil Nadu

coords: 11.35°, 76.79°
period: 1940–2025 · 86 yrs

AwTropical savannaWarmest monthAprilColdest monthDecemberWettest monthJulyDriest monthJanuary

Mean daily temperature

20.8°C

Average daily high

25.3°C

Average daily low

17.3°C

Annual rainfall

1,756mm

Sunshine / day

10.1h

Mean relative humidity

77%

Average peak wind

9.4km/h

Seasonal range

4.4°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

17 d/yr

Rainy days (≥ 1 mm)

211 d/yr

Annual snowfall

0.0 cm

Average feels-like high

27.5 °C

Average feels-like low

18.6 °C

Average peak gust

36.9 km/h

Tropical nights (≥ 20 °C)

19 d/yr

Solar radiation

19.1 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.9 °C

since 1940

+0.2 °C per decade · r² = 0.79 · 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

33.3 °C

30 April 2016

Coldest day

9.2 °C

1 January 1951

Wettest day

186 mm

21 October 1963

Windiest day

22.1 km/h

27 June 1979

Strongest gust

101.5 km/h

23 July 1989

Hottest feels-like

36.8 °C

2 May 2024

Coldest feels-like

7.2 °C

1 January 1951

Sunniest day

12.1 h

28 May 2021

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	30.8 °C30 March 2025	11.7 °C20 December 2025	21.3 °C	1,804 mm	8
2024	33.1 °C29 April 2024	14.9 °C17 December 2024	22.2 °C	1,921 mm	41
2023	31.3 °C18 April 2023	12.9 °C20 January 2023	21.7 °C	1,711 mm	11
2022	30.8 °C29 April 2022	14.0 °C24 January 2022	21.2 °C	2,212 mm	7
2021	30.9 °C7 April 2021	13.3 °C10 February 2021	21.5 °C	2,323 mm	9
2020	31.2 °C23 April 2020	13.7 °C27 December 2020	21.7 °C	1,829 mm	19
2019	32.0 °C16 April 2019	12.7 °C22 January 2019	22.0 °C	1,821 mm	42
2018	31.1 °C21 April 2018	12.2 °C3 February 2018	21.4 °C	1,651 mm	8
2017	31.3 °C9 April 2017	14.2 °C10 February 2017	21.7 °C	1,855 mm	23
2016	33.3 °C30 April 2016	13.8 °C15 January 2016	22.0 °C	1,283 mm	57
2015	30.7 °C29 March 2015	12.1 °C13 January 2015	21.6 °C	2,001 mm	8
2014	32.1 °C31 March 2014	13.8 °C12 January 2014	21.7 °C	1,809 mm	25
2013	31.7 °C14 April 2013	12.2 °C19 December 2013	21.4 °C	1,720 mm	18
2012	32.8 °C15 April 2012	10.2 °C16 January 2012	21.5 °C	1,425 mm	35
2011	31.5 °C23 March 2011	11.7 °C25 December 2011	21.2 °C	2,110 mm	10
2010	33.1 °C11 April 2010	12.6 °C23 December 2010	21.7 °C	2,003 mm	41
2009	31.8 °C6 March 2009	11.5 °C1 January 2009	21.6 °C	1,922 mm	29
2008	31.7 °C21 April 2008	12.5 °C30 December 2008	21.1 °C	1,750 mm	2
2007	32.4 °C4 April 2007	12.0 °C16 November 2007	21.2 °C	2,044 mm	26
2006	31.1 °C24 March 2006	12.4 °C31 January 2006	21.1 °C	1,583 mm	13
2005	31.1 °C22 March 2005	11.8 °C10 January 2005	21.2 °C	2,185 mm	8
2004	32.6 °C19 March 2004	12.2 °C12 January 2004	21.0 °C	1,603 mm	25
2003	31.2 °C25 April 2003	11.8 °C11 December 2003	21.2 °C	1,616 mm	11
2002	32.5 °C30 April 2002	11.4 °C15 January 2002	21.2 °C	1,282 mm	20
2001	30.4 °C1 May 2001	11.7 °C11 December 2001	21.0 °C	1,519 mm	10
2000	31.4 °C9 April 2000	11.9 °C15 December 2000	20.8 °C	1,689 mm	7
1999	31.0 °C29 March 1999	12.0 °C4 January 1999	20.7 °C	1,320 mm	16
1998	32.2 °C18 April 1998	12.2 °C26 December 1998	21.5 °C	1,647 mm	39
1997	31.9 °C17 March 1997	11.4 °C21 January 1997	20.9 °C	1,797 mm	7
1996	31.7 °C31 March 1996	11.5 °C25 December 1996	20.7 °C	2,097 mm	14
1995	31.1 °C24 March 1995	10.7 °C3 January 1995	21.0 °C	1,779 mm	6
1994	31.3 °C19 March 1994	11.7 °C13 December 1994	20.7 °C	1,704 mm	9
1993	31.4 °C10 May 1993	11.4 °C20 January 1993	20.8 °C	1,512 mm	11
1992	31.9 °C28 March 1992	11.2 °C10 January 1992	20.7 °C	1,698 mm	30
1991	32.4 °C20 March 1991	11.5 °C28 December 1991	21.1 °C	1,817 mm	32
1990	30.1 °C1 April 1990	10.2 °C18 January 1990	20.7 °C	1,551 mm	2
1989	32.5 °C16 April 1989	11.2 °C4 February 1989	21.0 °C	1,755 mm	21
1988	31.6 °C5 April 1988	12.4 °C23 January 1988	21.1 °C	1,674 mm	28
1987	33.0 °C22 April 1987	11.8 °C1 February 1987	21.5 °C	1,126 mm	38
1986	32.3 °C16 April 1986	12.1 °C4 January 1986	21.1 °C	1,371 mm	39
1985	31.5 °C21 April 1985	11.3 °C30 November 1985	21.0 °C	1,216 mm	39
1984	31.2 °C12 May 1984	10.9 °C13 December 1984	20.7 °C	1,478 mm	11
1983	32.4 °C4 May 1983	11.1 °C8 January 1983	21.3 °C	1,618 mm	45
1982	30.8 °C17 March 1982	11.6 °C15 January 1982	20.8 °C	1,183 mm	16
1981	30.6 °C12 April 1981	11.0 °C11 December 1981	20.6 °C	1,851 mm	6
1980	32.3 °C14 April 1980	10.4 °C15 January 1980	21.1 °C	1,486 mm	26
1979	31.8 °C10 April 1979	12.9 °C12 January 1979	21.0 °C	1,427 mm	17
1978	31.7 °C13 April 1978	10.6 °C17 January 1978	20.6 °C	1,717 mm	4
1977	30.8 °C4 April 1977	11.8 °C3 January 1977	20.8 °C	1,516 mm	7
1976	31.5 °C21 April 1976	11.7 °C17 January 1976	20.7 °C	1,223 mm	9
1975	32.3 °C27 April 1975	10.7 °C9 January 1975	20.6 °C	1,844 mm	30
1974	31.1 °C22 April 1974	10.5 °C7 January 1974	20.5 °C	1,229 mm	15
1973	31.9 °C20 March 1973	12.4 °C25 December 1973	20.9 °C	1,457 mm	37
1972	31.6 °C28 April 1972	11.1 °C26 January 1972	20.8 °C	1,359 mm	17
1971	30.7 °C1 April 1971	10.2 °C21 December 1971	20.1 °C	1,708 mm	2
1970	31.1 °C29 March 1970	10.8 °C4 December 1970	20.5 °C	1,847 mm	6
1969	32.2 °C25 April 1969	11.6 °C26 January 1969	20.9 °C	1,623 mm	15
1968	30.4 °C18 April 1968	11.4 °C14 December 1968	20.4 °C	1,991 mm	1
1967	31.3 °C16 April 1967	12.2 °C12 February 1967	20.6 °C	2,057 mm	9
1966	30.7 °C6 April 1966	12.0 °C1 January 1966	20.3 °C	2,644 mm	10
1965	31.0 °C12 April 1965	11.8 °C24 January 1965	20.0 °C	2,012 mm	5
1964	32.8 °C29 April 1964	11.3 °C13 January 1964	20.5 °C	2,001 mm	32
1963	30.7 °C8 April 1963	12.0 °C24 January 1963	20.2 °C	1,870 mm	5
1962	30.3 °C2 April 1962	11.4 °C5 January 1962	20.3 °C	2,365 mm	3
1961	31.5 °C24 April 1961	12.1 °C29 December 1961	20.4 °C	2,102 mm	16
1960	31.3 °C28 March 1960	12.7 °C21 December 1960	20.5 °C	1,596 mm	22
1959	32.7 °C24 March 1959	12.6 °C6 December 1959	20.8 °C	1,443 mm	52
1958	31.2 °C10 April 1958	11.8 °C6 January 1958	20.8 °C	1,834 mm	17
1957	32.1 °C10 May 1957	10.8 °C9 January 1957	20.6 °C	1,525 mm	23
1956	32.0 °C29 March 1956	10.4 °C7 January 1956	20.1 °C	1,687 mm	37
1955	31.6 °C18 April 1955	11.4 °C11 December 1955	20.0 °C	1,990 mm	17
1954	31.9 °C20 April 1954	11.0 °C18 January 1954	20.3 °C	2,198 mm	8
1953	29.9 °C24 May 1953	11.7 °C31 January 1953	19.7 °C	2,114 mm	0
1952	31.0 °C2 April 1952	10.9 °C21 January 1952	20.0 °C	1,977 mm	2
1951	32.4 °C9 April 1951	9.2 °C1 January 1951	20.0 °C	2,103 mm	12
1950	31.8 °C26 April 1950	10.6 °C25 December 1950	19.9 °C	1,223 mm	7
1949	31.3 °C26 April 1949	10.0 °C31 January 1949	19.5 °C	2,040 mm	8
1948	31.2 °C22 March 1948	11.4 °C25 December 1948	20.4 °C	1,797 mm	5
1947	29.6 °C5 May 1947	11.7 °C30 December 1947	20.1 °C	1,461 mm	0
1946	30.6 °C28 April 1946	10.3 °C12 January 1946	20.0 °C	1,915 mm	5
1945	31.5 °C21 March 1945	11.1 °C13 December 1945	20.3 °C	1,712 mm	10
1944	30.4 °C10 May 1944	10.9 °C10 December 1944	20.1 °C	2,135 mm	5
1943	30.1 °C4 March 1943	11.0 °C20 January 1943	19.2 °C	2,286 mm	5
1942	30.9 °C1 April 1942	10.8 °C31 December 1942	19.6 °C	1,770 mm	8
1941	29.9 °C12 May 1941	9.8 °C30 December 1941	19.8 °C	2,018 mm	0
1940	31.6 °C3 April 1940	10.9 °C8 January 1940	19.6 °C	1,900 mm	15

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

25.7 °C

+0.4 °C

Hot days (≥ 30 °C)

8 d/yr

-9

Frost days (< 0 °C)

0 d/yr

Annual rainfall

1804 mm

+48 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	24.9 °C	+0.5 °C	22 mm	-7 mm
Feb	27.4 °C	+1.0 °C	1 mm	-29 mm
Mar	28.6 °C	+0.1 °C	39 mm	-9 mm
Apr	28.2 °C	-0.6 °C	146 mm	+52 mm
May	26.0 °C	-1.2 °C	353 mm	+164 mm
Jun	25.4 °C	+0.9 °C	205 mm	-37 mm
Jul	24.5 °C	+0.7 °C	283 mm	+15 mm
Aug	24.6 °C	+0.6 °C	287 mm	+69 mm
Sep	25.4 °C	+0.9 °C	136 mm	-54 mm
Oct	25.0 °C	+0.7 °C	240 mm	-7 mm
Nov	24.3 °C	+0.5 °C	62 mm	-79 mm
Dec	24.6 °C	+1.1 °C	31 mm	-30 mm

The year's extremes

Hottest day

30.8 °C

30 Mar 2025

Coldest day

11.7 °C

20 Dec 2025

Wettest day

50.6 mm

28 Aug 2025

Windiest day

16.9 km/h

23 Feb 2025

Strongest gust

77.4 km/h

26 May 2025

Hottest feels-like

33.9 °C

4 May 2025

Coldest feels-like

10.2 °C

20 Dec 2025

Sunniest day

12.0 h

16 Mar 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 Coonoor?

Coonoor has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 20.8 °C and it receives 1,756 mm of precipitation per year.

What is the hottest day ever recorded in Coonoor?

The hottest day measured in Coonoor between 1940 and 2025 was 30 April 2016, reaching 33.3 °C.

What is the coldest day in Coonoor?

The coldest day measured in Coonoor between 1940 and 2025 was 1 January 1951, at 9.2 °C.

Does it snow in Coonoor?

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

Has the climate of Coonoor warmed?

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

What is the wettest day in Coonoor?

The wettest day measured in Coonoor between 1940 and 2025 was 21 October 1963, with 186 mm of rain in 24 hours.

What was the windiest day in Coonoor?

The windiest day measured in Coonoor between 1940 and 2025 was 27 June 1979, with winds reaching 22.1 km/h.

What is the warmest month in Coonoor?

The warmest month in Coonoor is April (23.3 °C on average); the coldest is December (18.9 °C).

How much does it rain in Coonoor?

Coonoor receives on average 1,756 mm of precipitation per year, spread over about 211 rainy days.

Is it sunny in Coonoor?

Coonoor gets on average 10.1 hours of sunshine per day, roughly 3,687 hours per year over 1940-2025.

Are there tropical nights in Coonoor?

Yes: Coonoor has on average 19 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Coonoor?

In Coonoor, between 1940 and 2025, the highest apparent temperature reached 36.8 °C on 2 May 2024, and the lowest was 7.2 °C on 1 January 1951.

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