Bongaigaon climate — normals and trends

Q: What is the climate of Bongaigaon?

Bongaigaon has a humid subtropical, dry winter climate (Köppen Cwa). Over 1940-2025, the average annual temperature is 24.1 °C and it receives 3,547 mm of precipitation per year.

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

The hottest day measured in Bongaigaon between 1940 and 2025 was 21 April 1957, reaching 42.4 °C.

Q: What is the coldest day in Bongaigaon?

The coldest day measured in Bongaigaon between 1940 and 2025 was 25 December 1961, at 5.6 °C.

Q: Does it snow in Bongaigaon?

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

Q: Has the climate of Bongaigaon warmed?

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

Q: What is the wettest day in Bongaigaon?

The wettest day measured in Bongaigaon between 1940 and 2025 was 20 June 1965, with 533 mm of rain in 24 hours.

Q: What was the windiest day in Bongaigaon?

The windiest day measured in Bongaigaon between 1940 and 2025 was 26 May 2009, with winds reaching 33.7 km/h.

Q: What is the warmest month in Bongaigaon?

The warmest month in Bongaigaon is August (28.1 °C on average); the coldest is January (17.3 °C).

Q: How much does it rain in Bongaigaon?

Bongaigaon receives on average 3,547 mm of precipitation per year, spread over about 182 rainy days.

Q: Is it sunny in Bongaigaon?

Bongaigaon gets on average 9.0 hours of sunshine per day, roughly 3,285 hours per year over 1940-2025.

Bongaigaon (India) has a humid subtropical, dry winter climate (Cwa) under the Köppen-Geiger classification. Its mean annual temperature is 24.1 °C and it receives 3,547 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 (28.1 °C on average) and the coldest is January (17.3 °C). Rainfall peaks in June.

Bongaigaon averages 0 frost days, 150 hot days (≥ 30 °C) and 182 rainy days per year.

Bongaigaon 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 42.4 °C (on 21 April 1957) and the coldest 5.6 °C (on 25 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

BongaigaonAssam

coords: 26.48°, 90.56°
period: 1940–2025 · 86 yrs

CwaHumid subtropical, dry winterWarmest monthAugustColdest monthJanuaryWettest monthJuneDriest monthDecember

Mean daily temperature

24.1°C

Average daily high

28.9°C

Average daily low

20.0°C

Annual rainfall

3,547mm

Sunshine / day

9.0h

Mean relative humidity

75%

Average peak wind

9.6km/h

Seasonal range

10.8°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

150 d/yr

Rainy days (≥ 1 mm)

182 d/yr

Annual snowfall

0.0 cm

Average feels-like high

32.4 °C

Average feels-like low

22.5 °C

Average peak gust

24.5 km/h

Tropical nights (≥ 20 °C)

207 d/yr

Solar radiation

14.8 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.3 °C

since 1940

+0.2 °C per decade · r² = 0.58 · 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

42.4 °C

21 April 1957

Coldest day

5.6 °C

25 December 1961

Wettest day

533 mm

20 June 1965

Windiest day

33.7 km/h

26 May 2009

Strongest gust

72.7 km/h

26 May 2009

Hottest feels-like

47.0 °C

23 September 2024

Coldest feels-like

2.7 °C

28 January 1964

Sunniest day

13.5 h

26 June 1961

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	38.6 °C13 July 2025	10.1 °C11 January 2025	25.2 °C	2,478 mm	198
2024	38.6 °C25 May 2024	9.5 °C15 January 2024	24.9 °C	4,121 mm	200
2023	38.7 °C17 April 2023	8.6 °C5 January 2023	25.1 °C	3,363 mm	210
2022	37.0 °C14 July 2022	8.0 °C31 January 2022	24.5 °C	3,624 mm	177
2021	36.7 °C26 September 2021	8.4 °C2 January 2021	24.6 °C	2,672 mm	188
2020	37.2 °C10 May 2020	8.8 °C26 January 2020	24.6 °C	3,645 mm	190
2019	38.1 °C25 April 2019	8.1 °C2 January 2019	24.8 °C	3,763 mm	177
2018	37.9 °C10 June 2018	6.9 °C8 January 2018	24.5 °C	2,382 mm	177
2017	37.7 °C18 July 2017	7.3 °C14 January 2017	24.8 °C	3,744 mm	165
2016	36.5 °C25 August 2016	8.7 °C13 January 2016	24.9 °C	2,976 mm	186
2015	36.1 °C26 July 2015	7.7 °C26 December 2015	24.5 °C	4,058 mm	166
2014	39.6 °C25 April 2014	8.3 °C29 December 2014	24.7 °C	3,791 mm	195
2013	38.3 °C12 April 2013	5.7 °C11 January 2013	24.6 °C	2,308 mm	206
2012	37.6 °C2 April 2012	8.4 °C27 December 2012	24.2 °C	3,476 mm	183
2011	35.5 °C4 September 2011	8.7 °C25 December 2011	24.4 °C	3,279 mm	192
2010	38.2 °C20 March 2010	8.3 °C6 January 2010	24.6 °C	4,199 mm	182
2009	36.4 °C15 March 2009	9.3 °C30 December 2009	25.0 °C	3,266 mm	204
2008	35.8 °C8 August 2008	8.3 °C3 February 2008	24.3 °C	3,333 mm	153
2007	37.9 °C30 March 2007	9.0 °C16 January 2007	24.5 °C	5,070 mm	164
2006	38.1 °C28 March 2006	9.7 °C1 January 2006	25.0 °C	2,405 mm	199
2005	35.7 °C25 July 2005	9.0 °C24 January 2005	24.4 °C	2,986 mm	160
2004	35.7 °C8 May 2004	9.0 °C13 January 2004	24.1 °C	4,420 mm	142
2003	36.4 °C24 July 2003	8.2 °C23 January 2003	24.1 °C	3,154 mm	148
2002	35.6 °C19 March 2002	8.8 °C5 January 2002	24.3 °C	3,865 mm	147
2001	38.9 °C7 April 2001	8.5 °C26 December 2001	24.5 °C	3,099 mm	188
2000	36.6 °C6 April 2000	8.5 °C8 January 2000	24.2 °C	3,508 mm	153
1999	36.9 °C13 April 1999	7.2 °C14 January 1999	24.9 °C	3,789 mm	192
1998	37.8 °C20 May 1998	9.0 °C29 December 1998	24.6 °C	3,096 mm	155
1997	36.4 °C27 August 1997	9.5 °C24 January 1997	23.8 °C	4,077 mm	143
1996	39.8 °C10 April 1996	9.9 °C8 January 1996	24.3 °C	4,045 mm	162
1995	38.1 °C4 April 1995	7.4 °C25 January 1995	24.5 °C	4,770 mm	197
1994	35.5 °C15 July 1994	9.0 °C24 December 1994	24.2 °C	3,566 mm	169
1993	35.7 °C7 April 1993	8.0 °C2 January 1993	23.7 °C	4,914 mm	121
1992	40.7 °C16 April 1992	7.4 °C24 December 1992	24.0 °C	3,208 mm	158
1991	36.3 °C21 August 1991	8.3 °C25 January 1991	23.8 °C	3,817 mm	137
1990	35.0 °C25 June 1990	8.0 °C7 January 1990	23.9 °C	3,980 mm	127
1989	37.1 °C16 April 1989	6.5 °C14 January 1989	23.8 °C	3,442 mm	140
1988	36.9 °C9 April 1988	8.8 °C23 December 1988	24.3 °C	4,411 mm	138
1987	35.9 °C18 May 1987	8.4 °C4 January 1987	24.2 °C	3,790 mm	136
1986	39.8 °C1 April 1986	8.2 °C20 January 1986	24.2 °C	3,297 mm	142
1985	36.0 °C5 April 1985	8.1 °C19 January 1985	24.1 °C	2,873 mm	136
1984	37.6 °C5 April 1984	8.5 °C1 January 1984	23.8 °C	4,202 mm	124
1983	38.9 °C9 April 1983	6.5 °C7 January 1983	23.9 °C	3,114 mm	151
1982	37.1 °C7 April 1982	9.8 °C5 January 1982	24.1 °C	3,078 mm	154
1981	35.0 °C22 March 1981	7.4 °C11 January 1981	24.2 °C	1,952 mm	180
1980	36.9 °C27 March 1980	8.3 °C31 January 1980	24.2 °C	2,274 mm	168
1979	38.4 °C5 April 1979	7.2 °C3 January 1979	24.5 °C	2,883 mm	158
1978	38.0 °C9 April 1978	6.4 °C9 January 1978	24.3 °C	2,436 mm	189
1977	36.6 °C20 March 1977	7.2 °C9 February 1977	23.7 °C	3,786 mm	126
1976	39.1 °C16 April 1976	9.1 °C11 January 1976	24.2 °C	3,038 mm	161
1975	38.8 °C10 April 1975	8.0 °C23 December 1975	24.1 °C	2,567 mm	142
1974	35.8 °C13 August 1974	8.8 °C7 February 1974	23.9 °C	4,238 mm	131
1973	39.3 °C9 April 1973	10.5 °C23 December 1973	24.5 °C	4,374 mm	140
1972	35.1 °C13 July 1972	9.4 °C21 January 1972	23.9 °C	4,238 mm	140
1971	36.7 °C25 March 1971	7.9 °C10 January 1971	23.8 °C	2,942 mm	128
1970	37.0 °C21 August 1970	8.3 °C3 January 1970	23.9 °C	3,446 mm	158
1969	34.8 °C15 March 1969	7.3 °C31 December 1969	23.9 °C	2,970 mm	151
1968	34.7 °C15 March 1968	7.8 °C31 December 1968	23.5 °C	3,448 mm	134
1967	35.2 °C28 August 1967	8.1 °C3 January 1967	23.7 °C	3,529 mm	128
1966	36.4 °C12 April 1966	9.0 °C21 January 1966	23.6 °C	4,615 mm	103
1965	35.3 °C18 March 1965	9.6 °C9 December 1965	23.4 °C	4,603 mm	94
1964	38.5 °C16 March 1964	5.7 °C28 January 1964	24.3 °C	4,215 mm	167
1963	39.3 °C31 March 1963	7.2 °C20 January 1963	24.1 °C	4,821 mm	155
1962	40.4 °C15 April 1962	6.9 °C9 January 1962	24.2 °C	3,903 mm	156
1961	39.7 °C16 April 1961	5.6 °C25 December 1961	24.0 °C	2,978 mm	160
1960	41.9 °C20 April 1960	6.8 °C2 January 1960	24.8 °C	4,370 mm	177
1959	38.2 °C9 April 1959	9.1 °C4 February 1959	23.6 °C	5,305 mm	111
1958	37.0 °C27 March 1958	10.1 °C20 January 1958	24.1 °C	4,909 mm	140
1957	42.4 °C21 April 1957	7.4 °C18 January 1957	24.2 °C	3,540 mm	168
1956	39.0 °C18 April 1956	9.1 °C3 January 1956	23.9 °C	3,756 mm	140
1955	37.9 °C24 April 1955	8.1 °C28 December 1955	24.0 °C	2,984 mm	141
1954	36.1 °C23 March 1954	8.6 °C13 January 1954	23.7 °C	4,022 mm	107
1953	34.4 °C19 June 1953	6.3 °C26 January 1953	23.0 °C	3,505 mm	69
1952	33.1 °C14 April 1952	8.7 °C31 December 1952	23.3 °C	3,409 mm	98
1951	35.1 °C24 July 1951	8.6 °C27 January 1951	23.3 °C	4,206 mm	88
1950	34.8 °C10 April 1950	8.7 °C12 February 1950	23.3 °C	4,053 mm	88
1949	33.2 °C30 July 1949	9.3 °C27 December 1949	23.2 °C	3,346 mm	90
1948	35.2 °C13 March 1948	9.0 °C14 December 1948	23.7 °C	3,410 mm	133
1947	37.6 °C8 April 1947	9.3 °C16 January 1947	24.1 °C	2,834 mm	148
1946	36.7 °C22 March 1946	9.5 °C2 January 1946	24.1 °C	2,878 mm	145
1945	38.1 °C4 April 1945	7.6 °C8 January 1945	23.5 °C	3,235 mm	140
1944	35.2 °C22 March 1944	9.2 °C21 January 1944	24.0 °C	2,754 mm	141
1943	34.9 °C10 July 1943	9.1 °C11 December 1943	22.8 °C	3,166 mm	69
1942	36.2 °C17 March 1942	8.9 °C4 January 1942	23.6 °C	4,151 mm	111
1941	34.3 °C16 March 1941	9.1 °C14 January 1941	23.3 °C	2,770 mm	120
1940	34.3 °C1 July 1940	8.3 °C11 January 1940	23.3 °C	2,707 mm	114

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

30.1 °C

+1.2 °C

Hot days (≥ 30 °C)

198 d/yr

+48

Frost days (< 0 °C)

0 d/yr

Annual rainfall

2478 mm

-1069 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	24.6 °C	+0.8 °C	2 mm	-10 mm
Feb	25.9 °C	-0.4 °C	5 mm	-12 mm
Mar	30.2 °C	-0.2 °C	38 mm	-21 mm
Apr	31.7 °C	+0.9 °C	173 mm	-65 mm
May	30.2 °C	+0.3 °C	679 mm	+151 mm
Jun	33.2 °C	+2.7 °C	350 mm	-495 mm
Jul	33.5 °C	+2.7 °C	277 mm	-459 mm
Aug	31.9 °C	+0.9 °C	577 mm	+15 mm
Sep	33.3 °C	+2.7 °C	222 mm	-170 mm
Oct	31.7 °C	+2.1 °C	107 mm	-36 mm
Nov	29.4 °C	+1.8 °C	49 mm	+38 mm
Dec	25.7 °C	+0.7 °C	0 mm	-5 mm

The year's extremes

Hottest day

38.6 °C

13 Jul 2025

Coldest day

10.1 °C

11 Jan 2025

Wettest day

122.2 mm

30 May 2025

Windiest day

21.5 km/h

17 Mar 2025

Strongest gust

52.9 km/h

30 May 2025

Hottest feels-like

45.5 °C

24 Jul 2025

Coldest feels-like

9.3 °C

11 Jan 2025

Sunniest day

13.1 h

8 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 Bongaigaon?

Bongaigaon has a humid subtropical, dry winter climate (Köppen Cwa). Over 1940-2025, the average annual temperature is 24.1 °C and it receives 3,547 mm of precipitation per year.

What is the hottest day ever recorded in Bongaigaon?

The hottest day measured in Bongaigaon between 1940 and 2025 was 21 April 1957, reaching 42.4 °C.

What is the coldest day in Bongaigaon?

The coldest day measured in Bongaigaon between 1940 and 2025 was 25 December 1961, at 5.6 °C.

Does it snow in Bongaigaon?

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

Has the climate of Bongaigaon warmed?

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

What is the wettest day in Bongaigaon?

The wettest day measured in Bongaigaon between 1940 and 2025 was 20 June 1965, with 533 mm of rain in 24 hours.

What was the windiest day in Bongaigaon?

The windiest day measured in Bongaigaon between 1940 and 2025 was 26 May 2009, with winds reaching 33.7 km/h.

What is the warmest month in Bongaigaon?

The warmest month in Bongaigaon is August (28.1 °C on average); the coldest is January (17.3 °C).

How much does it rain in Bongaigaon?

Bongaigaon receives on average 3,547 mm of precipitation per year, spread over about 182 rainy days.

Is it sunny in Bongaigaon?

Bongaigaon gets on average 9.0 hours of sunshine per day, roughly 3,285 hours per year over 1940-2025.

Are there tropical nights in Bongaigaon?

Yes: Bongaigaon has on average 207 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Bongaigaon?

In Bongaigaon, between 1940 and 2025, the highest apparent temperature reached 47.0 °C on 23 September 2024, and the lowest was 2.7 °C on 28 January 1964.

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