Perunkalattu climate — normals and trends

Q: What is the climate of Perunkalattu?

Perunkalattu has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 28.0 °C and it receives 909 mm of precipitation per year.

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

The hottest day measured in Perunkalattu between 1940 and 2025 was 13 May 1956, reaching 44.6 °C.

Q: What is the coldest day in Perunkalattu?

The coldest day measured in Perunkalattu between 1940 and 2025 was 17 January 1940, at 14.9 °C.

Q: Does it snow in Perunkalattu?

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

Q: Has the climate of Perunkalattu warmed?

Yes: Perunkalattu warmed by +1.0 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Perunkalattu?

The wettest day measured in Perunkalattu between 1940 and 2025 was 14 June 1996, with 230 mm of rain in 24 hours.

Q: What was the windiest day in Perunkalattu?

The windiest day measured in Perunkalattu between 1940 and 2025 was 12 December 2016, with winds reaching 56.2 km/h.

Q: What is the warmest month in Perunkalattu?

The warmest month in Perunkalattu is May (31.8 °C on average); the coldest is January (24.1 °C).

Q: How much does it rain in Perunkalattu?

Perunkalattu receives on average 909 mm of precipitation per year, spread over about 127 rainy days.

Q: Is it sunny in Perunkalattu?

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

Perunkalattu (India) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 28.0 °C and it receives 909 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 May (31.8 °C on average) and the coldest is January (24.1 °C). Rainfall peaks in October.

Perunkalattu averages 0 frost days, 267 hot days (≥ 30 °C) and 127 rainy days per year.

Perunkalattu has warmed by +1.0 °C between 1940 and 2025, or +0.12 °C per decade. This trend is statistically significant.

The hottest day of the period reached 44.6 °C (on 13 May 1956) and the coldest 14.9 °C (on 17 January 1940).

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

PerunkalattuTamil Nadu

coords: 12.92°, 80.08°
period: 1940–2025 · 86 yrs

AwTropical savannaWarmest monthMayColdest monthJanuaryWettest monthOctoberDriest monthFebruary

Mean daily temperature

28.0°C

Average daily high

32.8°C

Average daily low

24.6°C

Annual rainfall

909mm

Sunshine / day

10.0h

Mean relative humidity

72%

Average peak wind

15.7km/h

Seasonal range

7.7°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

267 d/yr

Rainy days (≥ 1 mm)

127 d/yr

Annual snowfall

0.0 cm

Average feels-like high

36.6 °C

Average feels-like low

28.3 °C

Average peak gust

33.8 km/h

Tropical nights (≥ 20 °C)

339 d/yr

Solar radiation

19.3 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.0 °C

since 1940

+0.1 °C per decade · r² = 0.44 · 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

44.6 °C

13 May 1956

Coldest day

14.9 °C

17 January 1940

Wettest day

230 mm

14 June 1996

Windiest day

56.2 km/h

12 December 2016

Strongest gust

111.2 km/h

12 December 2016

Hottest feels-like

48.8 °C

16 May 2023

Coldest feels-like

14.5 °C

11 December 1981

Sunniest day

12.7 h

31 May 1972

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	39.0 °C8 July 2025	19.9 °C20 December 2025	28.8 °C	875 mm	281
2024	40.3 °C30 May 2024	20.4 °C17 January 2024	29.1 °C	1,261 mm	311
2023	40.7 °C16 May 2023	19.2 °C15 January 2023	28.7 °C	1,222 mm	292
2022	38.5 °C1 June 2022	20.4 °C3 February 2022	28.5 °C	1,242 mm	288
2021	39.9 °C2 April 2021	19.3 °C23 December 2021	28.6 °C	1,416 mm	283
2020	41.0 °C20 May 2020	19.5 °C14 January 2020	28.7 °C	1,063 mm	301
2019	41.0 °C9 June 2019	18.5 °C9 January 2019	29.1 °C	871 mm	282
2018	39.2 °C29 May 2018	17.7 °C1 February 2018	28.7 °C	764 mm	292
2017	41.9 °C18 May 2017	19.3 °C8 February 2017	28.9 °C	1,137 mm	294
2016	39.7 °C23 April 2016	18.9 °C24 December 2016	28.8 °C	936 mm	317
2015	40.7 °C25 May 2015	18.4 °C13 January 2015	28.7 °C	1,109 mm	298
2014	41.8 °C23 May 2014	18.3 °C9 February 2014	28.7 °C	923 mm	283
2013	42.5 °C25 May 2013	18.1 °C16 December 2013	28.4 °C	871 mm	293
2012	41.4 °C3 June 2012	15.9 °C17 January 2012	28.6 °C	707 mm	289
2011	40.2 °C6 May 2011	17.2 °C13 February 2011	28.1 °C	919 mm	276
2010	40.0 °C27 May 2010	18.9 °C22 January 2010	28.2 °C	1,250 mm	269
2009	40.2 °C11 May 2009	17.4 °C11 February 2009	28.5 °C	845 mm	282
2008	40.8 °C17 May 2008	18.0 °C18 January 2008	27.9 °C	1,130 mm	265
2007	40.9 °C10 May 2007	17.8 °C16 November 2007	27.8 °C	1,169 mm	263
2006	40.3 °C30 April 2006	17.4 °C14 February 2006	28.1 °C	867 mm	268
2005	39.8 °C17 June 2005	18.0 °C11 January 2005	28.2 °C	1,289 mm	262
2004	39.9 °C18 April 2004	17.7 °C15 January 2004	28.0 °C	876 mm	260
2003	42.3 °C22 May 2003	18.1 °C31 January 2003	28.4 °C	665 mm	284
2002	41.4 °C11 May 2002	17.7 °C26 December 2002	28.2 °C	560 mm	257
2001	41.5 °C15 May 2001	19.0 °C7 December 2001	28.4 °C	1,150 mm	267
2000	41.4 °C15 May 2000	17.2 °C14 December 2000	27.9 °C	726 mm	267
1999	39.8 °C14 April 1999	17.6 °C27 January 1999	28.1 °C	580 mm	269
1998	42.0 °C28 May 1998	18.8 °C24 December 1998	28.5 °C	859 mm	277
1997	41.1 °C29 May 1997	17.0 °C16 February 1997	28.1 °C	898 mm	269
1996	41.1 °C14 May 1996	16.7 °C2 December 1996	27.8 °C	1,485 mm	260
1995	39.8 °C7 June 1995	17.8 °C15 December 1995	27.8 °C	909 mm	259
1994	40.8 °C10 May 1994	16.1 °C11 December 1994	28.0 °C	759 mm	249
1993	40.2 °C25 May 1993	17.4 °C19 January 1993	28.0 °C	1,005 mm	251
1992	40.1 °C23 May 1992	15.5 °C7 January 1992	27.8 °C	593 mm	265
1991	41.1 °C29 April 1991	17.7 °C29 November 1991	28.0 °C	836 mm	266
1990	39.7 °C20 April 1990	15.8 °C15 January 1990	28.0 °C	1,001 mm	261
1989	40.3 °C30 April 1989	15.4 °C3 February 1989	27.6 °C	990 mm	252
1988	41.2 °C10 May 1988	16.7 °C30 November 1988	28.0 °C	988 mm	257
1987	40.6 °C1 June 1987	17.6 °C15 February 1987	28.1 °C	884 mm	256
1986	41.3 °C18 May 1986	18.3 °C23 February 1986	28.2 °C	820 mm	243
1985	41.2 °C24 May 1985	18.3 °C26 February 1985	27.9 °C	830 mm	261
1984	40.8 °C2 June 1984	17.4 °C14 December 1984	27.8 °C	1,092 mm	225
1983	42.9 °C31 May 1983	17.4 °C9 January 1983	28.2 °C	737 mm	276
1982	39.7 °C4 May 1982	18.7 °C16 January 1982	28.2 °C	489 mm	271
1981	41.3 °C19 May 1981	15.0 °C11 December 1981	27.7 °C	842 mm	258
1980	42.4 °C24 May 1980	17.8 °C1 January 1980	28.1 °C	726 mm	270
1979	40.0 °C6 June 1979	17.9 °C31 December 1979	28.3 °C	691 mm	247
1978	41.2 °C19 May 1978	16.0 °C19 January 1978	28.0 °C	1,021 mm	254
1977	39.7 °C2 June 1977	16.4 °C13 January 1977	27.9 °C	686 mm	249
1976	42.2 °C3 May 1976	16.7 °C22 January 1976	27.8 °C	918 mm	258
1975	41.7 °C12 May 1975	15.8 °C11 January 1975	27.9 °C	929 mm	259
1974	39.1 °C2 June 1974	17.1 °C7 February 1974	27.7 °C	569 mm	256
1973	41.9 °C9 May 1973	16.3 °C10 December 1973	28.2 °C	730 mm	263
1972	43.0 °C5 June 1972	16.7 °C6 January 1972	27.9 °C	693 mm	250
1971	40.4 °C4 May 1971	16.9 °C21 December 1971	27.5 °C	827 mm	246
1970	40.8 °C4 May 1970	15.8 °C2 December 1970	27.9 °C	753 mm	255
1969	40.3 °C10 June 1969	15.0 °C27 January 1969	28.2 °C	1,093 mm	251
1968	40.5 °C30 May 1968	17.6 °C8 January 1968	27.9 °C	933 mm	248
1967	41.4 °C4 June 1967	15.9 °C17 February 1967	27.6 °C	1,096 mm	243
1966	44.3 °C24 May 1966	15.9 °C14 December 1966	27.5 °C	1,351 mm	231
1965	43.0 °C31 May 1965	16.6 °C14 January 1965	27.6 °C	1,145 mm	259
1964	44.2 °C26 May 1964	17.1 °C15 January 1964	27.8 °C	936 mm	267
1963	42.8 °C27 May 1963	17.1 °C23 January 1963	27.7 °C	837 mm	269
1962	39.5 °C2 May 1962	17.7 °C11 January 1962	27.4 °C	813 mm	239
1961	39.7 °C27 May 1961	17.3 °C27 December 1961	27.5 °C	629 mm	255
1960	41.7 °C25 May 1960	16.6 °C4 February 1960	27.9 °C	855 mm	257
1959	41.5 °C23 May 1959	18.6 °C12 February 1959	28.1 °C	668 mm	265
1958	41.7 °C7 June 1958	17.6 °C18 January 1958	28.3 °C	845 mm	273
1957	40.0 °C31 May 1957	16.8 °C23 January 1957	27.8 °C	673 mm	254
1956	44.6 °C13 May 1956	16.5 °C2 January 1956	27.3 °C	1,173 mm	224
1955	41.4 °C7 June 1955	16.2 °C30 December 1955	27.1 °C	1,211 mm	252
1954	42.8 °C28 May 1954	15.9 °C19 January 1954	27.6 °C	960 mm	265
1953	42.1 °C28 March 1953	17.8 °C22 December 1953	28.1 °C	819 mm	272
1952	42.9 °C19 May 1952	17.7 °C21 January 1952	28.7 °C	496 mm	323
1951	40.7 °C10 May 1951	17.0 °C27 February 1951	28.1 °C	885 mm	303
1950	41.6 °C24 May 1950	16.7 °C2 January 1950	28.1 °C	665 mm	342
1949	40.7 °C15 May 1949	18.4 °C31 December 1949	27.6 °C	839 mm	273
1948	42.3 °C21 May 1948	19.1 °C26 December 1948	28.3 °C	1,025 mm	264
1947	41.2 °C24 May 1947	17.1 °C7 February 1947	27.9 °C	745 mm	254
1946	43.8 °C1 May 1946	15.3 °C25 January 1946	28.0 °C	1,047 mm	262
1945	43.1 °C17 May 1945	16.2 °C7 February 1945	28.0 °C	671 mm	270
1944	40.4 °C30 May 1944	17.4 °C25 December 1944	27.8 °C	1,000 mm	254
1943	41.1 °C29 April 1943	17.0 °C22 February 1943	26.8 °C	1,322 mm	234
1942	38.6 °C2 July 1942	15.2 °C1 January 1942	27.1 °C	774 mm	255
1941	43.6 °C24 May 1941	15.0 °C26 December 1941	27.8 °C	1,136 mm	271
1940	40.9 °C3 June 1940	14.9 °C17 January 1940	27.8 °C	573 mm	289

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

33.0 °C

+0.2 °C

Hot days (≥ 30 °C)

281 d/yr

+14

Frost days (< 0 °C)

0 d/yr

Annual rainfall

875 mm

-34 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	29.1 °C	+0.5 °C	17 mm	-2 mm
Feb	32.0 °C	+1.1 °C	0 mm	-8 mm
Mar	34.1 °C	+0.6 °C	22 mm	+7 mm
Apr	35.7 °C	0.0 °C	13 mm	-6 mm
May	35.8 °C	-1.7 °C	97 mm	+53 mm
Jun	36.8 °C	+0.2 °C	43 mm	-23 mm
Jul	35.7 °C	+0.7 °C	82 mm	-4 mm
Aug	33.4 °C	-0.7 °C	123 mm	+15 mm
Sep	33.5 °C	+0.2 °C	57 mm	-62 mm
Oct	31.2 °C	+0.1 °C	197 mm	+28 mm
Nov	30.0 °C	+1.1 °C	150 mm	-17 mm
Dec	28.5 °C	+0.6 °C	75 mm	-16 mm

The year's extremes

Hottest day

39.0 °C

8 Jul 2025

Coldest day

19.9 °C

20 Dec 2025

Wettest day

62.0 mm

30 Nov 2025

Windiest day

31.2 km/h

1 Dec 2025

Strongest gust

61.9 km/h

1 Dec 2025

Hottest feels-like

45.9 °C

12 Apr 2025

Coldest feels-like

22.3 °C

20 Dec 2025

Sunniest day

12.5 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 Perunkalattu?

Perunkalattu has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 28.0 °C and it receives 909 mm of precipitation per year.

What is the hottest day ever recorded in Perunkalattu?

The hottest day measured in Perunkalattu between 1940 and 2025 was 13 May 1956, reaching 44.6 °C.

What is the coldest day in Perunkalattu?

The coldest day measured in Perunkalattu between 1940 and 2025 was 17 January 1940, at 14.9 °C.

Does it snow in Perunkalattu?

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

Has the climate of Perunkalattu warmed?

Yes: Perunkalattu warmed by +1.0 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Perunkalattu?

The wettest day measured in Perunkalattu between 1940 and 2025 was 14 June 1996, with 230 mm of rain in 24 hours.

What was the windiest day in Perunkalattu?

The windiest day measured in Perunkalattu between 1940 and 2025 was 12 December 2016, with winds reaching 56.2 km/h.

What is the warmest month in Perunkalattu?

The warmest month in Perunkalattu is May (31.8 °C on average); the coldest is January (24.1 °C).

How much does it rain in Perunkalattu?

Perunkalattu receives on average 909 mm of precipitation per year, spread over about 127 rainy days.

Is it sunny in Perunkalattu?

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

Are there tropical nights in Perunkalattu?

Yes: Perunkalattu has on average 339 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Perunkalattu?

In Perunkalattu, between 1940 and 2025, the highest apparent temperature reached 48.8 °C on 16 May 2023, and the lowest was 14.5 °C on 11 December 1981.

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