Itanagar climate — normals and trends

Q: What is the climate of Itanagar?

Itanagar has a humid subtropical, dry winter climate (Köppen Cwa). Over 1940-2025, the average annual temperature is 21.7 °C and it receives 2,035 mm of precipitation per year.

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

The hottest day measured in Itanagar between 1940 and 2025 was 25 May 2024, reaching 37.5 °C.

Q: What is the coldest day in Itanagar?

The coldest day measured in Itanagar between 1940 and 2025 was 28 December 1961, at 4.7 °C.

Q: Does it snow in Itanagar?

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

Q: Has the climate of Itanagar warmed?

Yes: Itanagar warmed by +1.3 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Itanagar?

The wettest day measured in Itanagar between 1940 and 2025 was 28 August 1942, with 219 mm of rain in 24 hours.

Q: What was the windiest day in Itanagar?

The windiest day measured in Itanagar between 1940 and 2025 was 19 March 1985, with winds reaching 29.0 km/h.

Q: What is the warmest month in Itanagar?

The warmest month in Itanagar is August (26.4 °C on average); the coldest is January (14.7 °C).

Q: How much does it rain in Itanagar?

Itanagar receives on average 2,035 mm of precipitation per year, spread over about 188 rainy days.

Q: Is it sunny in Itanagar?

Itanagar gets on average 9.2 hours of sunshine per day, roughly 3,358 hours per year over 1940-2025.

Itanagar (India) has a humid subtropical, dry winter climate (Cwa) under the Köppen-Geiger classification. Its mean annual temperature is 21.7 °C and it receives 2,035 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 August (26.4 °C on average) and the coldest is January (14.7 °C). Rainfall peaks in June.

Itanagar averages 0 frost days, 46 hot days (≥ 30 °C) and 188 rainy days per year.

Itanagar has warmed by +1.3 °C between 1940 and 2025, or +0.15 °C per decade. This trend is statistically significant.

The hottest day of the period reached 37.5 °C (on 25 May 2024) and the coldest 4.7 °C (on 28 December 1961).

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

ItanagarArunachal Pradesh

coords: 27.09°, 93.61°
period: 1940–2025 · 86 yrs

CwaHumid subtropical, dry winterWarmest monthAugustColdest monthJanuaryWettest monthJuneDriest monthDecember

Mean daily temperature

21.7°C

Average daily high

25.7°C

Average daily low

18.3°C

Annual rainfall

2,035mm

Sunshine / day

9.2h

Mean relative humidity

80%

Average peak wind

7.3km/h

Seasonal range

11.7°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

46 d/yr

Rainy days (≥ 1 mm)

188 d/yr

Annual snowfall

0.0 cm

Average feels-like high

28.8 °C

Average feels-like low

20.4 °C

Average peak gust

26.6 km/h

Tropical nights (≥ 20 °C)

171 d/yr

Solar radiation

14.7 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.3 °C

since 1940

+0.2 °C per decade · r² = 0.51 · 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

37.5 °C

25 May 2024

Coldest day

4.7 °C

28 December 1961

Wettest day

219 mm

28 August 1942

Windiest day

29.0 km/h

19 March 1985

Strongest gust

87.5 km/h

21 March 2011

Hottest feels-like

44.2 °C

6 August 2020

Coldest feels-like

1.7 °C

28 December 1961

Sunniest day

13.4 h

26 June 1961

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	36.1 °C12 June 2025	10.5 °C16 January 2025	23.1 °C	1,418 mm	109
2024	37.5 °C25 May 2024	9.2 °C20 January 2024	22.8 °C	2,176 mm	93
2023	36.1 °C4 September 2023	8.7 °C21 January 2023	22.9 °C	1,763 mm	89
2022	34.9 °C15 July 2022	8.0 °C31 January 2022	22.5 °C	2,059 mm	91
2021	34.2 °C14 October 2021	8.4 °C2 January 2021	22.8 °C	1,380 mm	99
2020	35.3 °C4 August 2020	7.5 °C25 January 2020	22.4 °C	1,948 mm	72
2019	35.3 °C6 August 2019	8.1 °C6 January 2019	22.5 °C	1,837 mm	86
2018	36.8 °C10 June 2018	8.0 °C9 January 2018	22.6 °C	1,429 mm	91
2017	34.9 °C18 July 2017	7.3 °C14 January 2017	22.8 °C	2,338 mm	79
2016	34.6 °C3 August 2016	8.4 °C15 January 2016	22.7 °C	1,950 mm	83
2015	35.2 °C26 July 2015	6.8 °C25 December 2015	22.4 °C	2,171 mm	64
2014	35.1 °C24 April 2014	7.5 °C9 January 2014	22.4 °C	2,210 mm	90
2013	35.3 °C13 June 2013	6.4 °C11 January 2013	22.3 °C	1,463 mm	92
2012	33.8 °C3 April 2012	7.4 °C29 December 2012	21.6 °C	2,421 mm	70
2011	33.5 °C31 August 2011	6.7 °C18 January 2011	22.1 °C	1,687 mm	74
2010	33.2 °C20 March 2010	8.0 °C6 January 2010	22.0 °C	2,976 mm	49
2009	34.5 °C13 July 2009	8.0 °C9 January 2009	22.5 °C	1,562 mm	82
2008	34.5 °C8 July 2008	6.6 °C3 February 2008	21.9 °C	1,855 mm	64
2007	34.2 °C6 May 2007	6.7 °C20 January 2007	22.0 °C	2,253 mm	73
2006	35.5 °C16 August 2006	8.7 °C27 January 2006	22.3 °C	1,342 mm	78
2005	33.5 °C13 September 2005	7.9 °C15 January 2005	21.7 °C	1,567 mm	59
2004	32.6 °C12 August 2004	7.4 °C30 December 2004	21.5 °C	2,618 mm	22
2003	34.3 °C24 July 2003	8.2 °C27 January 2003	21.7 °C	1,915 mm	30
2002	33.5 °C9 September 2002	8.3 °C5 January 2002	21.9 °C	2,197 mm	52
2001	33.1 °C5 July 2001	8.0 °C8 January 2001	22.0 °C	1,641 mm	49
2000	33.7 °C13 May 2000	8.2 °C4 January 2000	21.4 °C	1,916 mm	31
1999	34.2 °C21 April 1999	8.1 °C31 December 1999	22.8 °C	1,688 mm	48
1998	34.5 °C18 May 1998	7.6 °C23 January 1998	22.2 °C	2,169 mm	43
1997	33.7 °C27 August 1997	6.6 °C26 January 1997	21.1 °C	2,063 mm	39
1996	33.9 °C20 June 1996	8.5 °C23 January 1996	21.6 °C	2,752 mm	42
1995	33.2 °C31 August 1995	5.9 °C6 January 1995	21.7 °C	2,701 mm	36
1994	33.9 °C15 July 1994	7.3 °C19 January 1994	21.6 °C	2,056 mm	63
1993	32.6 °C15 June 1993	7.9 °C16 January 1993	21.5 °C	2,365 mm	34
1992	32.5 °C2 September 1992	5.7 °C2 January 1992	21.1 °C	1,973 mm	35
1991	33.3 °C26 July 1991	6.0 °C31 December 1991	21.4 °C	2,481 mm	27
1990	32.1 °C19 August 1990	7.7 °C3 January 1990	21.5 °C	2,796 mm	37
1989	32.8 °C11 June 1989	5.1 °C13 January 1989	21.3 °C	2,375 mm	32
1988	33.0 °C1 August 1988	7.0 °C28 January 1988	21.9 °C	2,600 mm	37
1987	32.5 °C21 June 1987	7.9 °C2 January 1987	21.7 °C	2,369 mm	27
1986	35.1 °C1 April 1986	7.6 °C20 January 1986	21.7 °C	1,634 mm	49
1985	32.8 °C11 September 1985	7.4 °C17 January 1985	21.6 °C	1,815 mm	27
1984	34.4 °C1 June 1984	6.7 °C25 January 1984	21.4 °C	2,272 mm	34
1983	32.9 °C13 June 1983	5.3 °C8 January 1983	21.2 °C	2,285 mm	38
1982	33.1 °C1 August 1982	7.1 °C28 December 1982	21.5 °C	1,894 mm	40
1981	33.3 °C11 June 1981	6.9 °C11 January 1981	21.8 °C	1,084 mm	51
1980	33.2 °C24 July 1980	6.4 °C10 January 1980	21.4 °C	1,792 mm	35
1979	35.6 °C6 June 1979	6.7 °C25 December 1979	21.9 °C	1,577 mm	64
1978	34.8 °C18 May 1978	5.5 °C5 January 1978	21.6 °C	1,927 mm	55
1977	32.1 °C11 September 1977	5.9 °C31 January 1977	21.1 °C	2,816 mm	30
1976	32.7 °C25 May 1976	7.6 °C2 January 1976	21.3 °C	1,802 mm	29
1975	33.4 °C12 August 1975	6.6 °C9 January 1975	21.5 °C	1,934 mm	40
1974	34.0 °C13 August 1974	7.2 °C18 January 1974	21.4 °C	2,386 mm	35
1973	33.8 °C25 August 1973	7.2 °C20 January 1973	21.9 °C	2,261 mm	49
1972	33.1 °C13 July 1972	6.4 °C10 February 1972	21.3 °C	2,598 mm	40
1971	33.7 °C14 July 1971	6.0 °C10 January 1971	21.4 °C	1,792 mm	45
1970	33.0 °C18 August 1970	6.8 °C30 January 1970	21.4 °C	2,141 mm	37
1969	33.5 °C2 June 1969	5.3 °C16 January 1969	21.7 °C	1,482 mm	48
1968	32.4 °C15 August 1968	6.5 °C20 January 1968	21.0 °C	2,218 mm	27
1967	32.7 °C28 August 1967	7.4 °C21 January 1967	21.3 °C	1,938 mm	28
1966	31.5 °C18 May 1966	8.8 °C15 January 1966	21.3 °C	2,236 mm	11
1965	32.6 °C11 June 1965	9.3 °C12 January 1965	21.1 °C	1,996 mm	22
1964	34.1 °C16 March 1964	7.3 °C26 January 1964	21.9 °C	2,501 mm	40
1963	34.1 °C1 April 1963	8.1 °C20 January 1963	21.8 °C	1,905 mm	40
1962	33.9 °C14 July 1962	5.3 °C18 January 1962	21.4 °C	2,298 mm	51
1961	33.5 °C26 June 1961	4.7 °C28 December 1961	21.3 °C	1,985 mm	44
1960	34.4 °C1 May 1960	7.3 °C2 January 1960	22.2 °C	2,351 mm	58
1959	33.1 °C30 August 1959	7.2 °C2 February 1959	21.3 °C	2,717 mm	31
1958	32.3 °C10 September 1958	8.1 °C19 January 1958	21.5 °C	3,232 mm	32
1957	35.2 °C14 April 1957	8.7 °C6 February 1957	21.2 °C	2,307 mm	40
1956	32.4 °C3 August 1956	7.7 °C1 February 1956	21.5 °C	2,031 mm	40
1955	32.1 °C16 March 1955	7.6 °C3 January 1955	21.4 °C	1,662 mm	26
1954	31.5 °C20 September 1954	7.9 °C26 January 1954	21.2 °C	2,104 mm	14
1953	33.0 °C14 August 1953	6.4 °C25 January 1953	21.3 °C	1,779 mm	27
1952	31.0 °C15 June 1952	7.9 °C11 January 1952	21.4 °C	1,881 mm	20
1951	32.9 °C5 September 1951	8.5 °C26 January 1951	21.2 °C	2,131 mm	12
1950	32.3 °C26 July 1950	8.3 °C14 February 1950	21.3 °C	1,826 mm	7
1949	31.3 °C13 July 1949	8.6 °C13 December 1949	21.3 °C	1,948 mm	8
1948	31.6 °C28 July 1948	9.0 °C15 December 1948	21.4 °C	1,681 mm	13
1947	35.2 °C19 May 1947	9.0 °C17 January 1947	21.9 °C	1,780 mm	40
1946	33.6 °C19 April 1946	9.0 °C2 January 1946	22.1 °C	1,147 mm	47
1945	33.0 °C4 April 1945	7.1 °C8 January 1945	21.4 °C	1,793 mm	33
1944	33.1 °C18 August 1944	8.9 °C20 January 1944	21.6 °C	1,824 mm	38
1943	32.7 °C10 July 1943	8.1 °C3 February 1943	20.6 °C	1,920 mm	6
1942	32.9 °C18 March 1942	8.0 °C4 January 1942	21.4 °C	2,162 mm	17
1941	31.9 °C10 July 1941	8.7 °C2 February 1941	21.2 °C	1,926 mm	12
1940	32.6 °C1 July 1940	8.2 °C10 January 1940	21.0 °C	1,738 mm	19

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

+1.8 °C

Hot days (≥ 30 °C)

109 d/yr

+63

Frost days (< 0 °C)

0 d/yr

Annual rainfall

1418 mm

-617 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	23.0 °C	+2.6 °C	19 mm	-8 mm
Feb	21.9 °C	-0.1 °C	51 mm	-1 mm
Mar	25.1 °C	0.0 °C	110 mm	+7 mm
Apr	28.0 °C	+1.8 °C	175 mm	-70 mm
May	27.7 °C	+0.4 °C	320 mm	-18 mm
Jun	30.9 °C	+2.4 °C	195 mm	-182 mm
Jul	32.1 °C	+3.3 °C	144 mm	-177 mm
Aug	29.9 °C	+0.8 °C	235 mm	-15 mm
Sep	31.2 °C	+2.8 °C	101 mm	-97 mm
Oct	29.2 °C	+2.2 °C	42 mm	-50 mm
Nov	26.5 °C	+2.0 °C	25 mm	+7 mm
Dec	23.8 °C	+2.2 °C	2 mm	-14 mm

The year's extremes

Hottest day

36.1 °C

12 Jun 2025

Coldest day

10.5 °C

16 Jan 2025

Wettest day

133.9 mm

30 May 2025

Windiest day

22.1 km/h

18 Mar 2025

Strongest gust

68.4 km/h

17 Mar 2025

Hottest feels-like

43.9 °C

13 Jun 2025

Coldest feels-like

9.0 °C

16 Jan 2025

Sunniest day

13.2 h

11 Jul 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 Itanagar?

Itanagar has a humid subtropical, dry winter climate (Köppen Cwa). Over 1940-2025, the average annual temperature is 21.7 °C and it receives 2,035 mm of precipitation per year.

What is the hottest day ever recorded in Itanagar?

The hottest day measured in Itanagar between 1940 and 2025 was 25 May 2024, reaching 37.5 °C.

What is the coldest day in Itanagar?

The coldest day measured in Itanagar between 1940 and 2025 was 28 December 1961, at 4.7 °C.

Does it snow in Itanagar?

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

Has the climate of Itanagar warmed?

Yes: Itanagar warmed by +1.3 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Itanagar?

The wettest day measured in Itanagar between 1940 and 2025 was 28 August 1942, with 219 mm of rain in 24 hours.

What was the windiest day in Itanagar?

The windiest day measured in Itanagar between 1940 and 2025 was 19 March 1985, with winds reaching 29.0 km/h.

What is the warmest month in Itanagar?

The warmest month in Itanagar is August (26.4 °C on average); the coldest is January (14.7 °C).

How much does it rain in Itanagar?

Itanagar receives on average 2,035 mm of precipitation per year, spread over about 188 rainy days.

Is it sunny in Itanagar?

Itanagar gets on average 9.2 hours of sunshine per day, roughly 3,358 hours per year over 1940-2025.

Are there tropical nights in Itanagar?

Yes: Itanagar has on average 171 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Itanagar?

In Itanagar, between 1940 and 2025, the highest apparent temperature reached 44.2 °C on 6 August 2020, and the lowest was 1.7 °C on 28 December 1961.

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