Birgunj climate — normals and trends

Q: What is the climate of Birgunj?

Birgunj has a humid subtropical, dry winter climate (Köppen Cwa). Over 1940-2025, the average annual temperature is 24.7 °C and it receives 1,479 mm of precipitation per year.

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

The hottest day measured in Birgunj between 1940 and 2025 was 26 May 1957, reaching 46.3 °C.

Q: What is the coldest day in Birgunj?

The coldest day measured in Birgunj between 1940 and 2025 was 9 January 2013, at 3.3 °C.

Q: Does it snow in Birgunj?

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

Q: Has the climate of Birgunj warmed?

Yes: Birgunj warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Birgunj?

The wettest day measured in Birgunj between 1940 and 2025 was 9 July 2003, with 342 mm of rain in 24 hours.

Q: What was the windiest day in Birgunj?

The windiest day measured in Birgunj between 1940 and 2025 was 16 July 2025, with winds reaching 37.8 km/h.

Q: What is the warmest month in Birgunj?

The warmest month in Birgunj is May (30.8 °C on average); the coldest is January (15.6 °C).

Q: How much does it rain in Birgunj?

Birgunj receives on average 1,479 mm of precipitation per year, spread over about 134 rainy days.

Q: Is it sunny in Birgunj?

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

Birgunj (Nepal) has a humid subtropical, dry winter climate (Cwa) under the Köppen-Geiger classification. Its mean annual temperature is 24.7 °C and it receives 1,479 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 (30.8 °C on average) and the coldest is January (15.6 °C). Rainfall peaks in July.

Birgunj averages 0 frost days, 207 hot days (≥ 30 °C) and 134 rainy days per year.

Birgunj has warmed by +1.5 °C between 1940 and 2025, or +0.17 °C per decade. This trend is statistically significant.

The hottest day of the period reached 46.3 °C (on 26 May 1957) and the coldest 3.3 °C (on 9 January 2013).

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

BirgunjMadhesh

coords: 27.02°, 84.88°
period: 1940–2025 · 86 yrs

CwaHumid subtropical, dry winterWarmest monthMayColdest monthJanuaryWettest monthJulyDriest monthDecember

Mean daily temperature

24.7°C

Average daily high

30.4°C

Average daily low

19.8°C

Annual rainfall

1,479mm

Sunshine / day

10.0h

Mean relative humidity

69%

Average peak wind

12.2km/h

Seasonal range

15.2°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

207 d/yr

Rainy days (≥ 1 mm)

134 d/yr

Annual snowfall

0.0 cm

Average feels-like high

33.3 °C

Average feels-like low

21.8 °C

Average peak gust

27.9 km/h

Tropical nights (≥ 20 °C)

202 d/yr

Solar radiation

17.6 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.5 °C

since 1940

+0.2 °C per decade · r² = 0.46 · 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

46.3 °C

26 May 1957

Coldest day

3.3 °C

9 January 2013

Wettest day

342 mm

9 July 2003

Windiest day

37.8 km/h

16 July 2025

Strongest gust

77.4 km/h

10 July 2015

Hottest feels-like

49.1 °C

21 May 1978

Coldest feels-like

1.3 °C

9 January 2013

Sunniest day

13.0 h

24 May 2012

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	39.9 °C11 June 2025	8.6 °C3 January 2025	25.2 °C	1,435 mm	221
2024	42.6 °C30 April 2024	7.7 °C23 January 2024	25.6 °C	1,429 mm	231
2023	43.4 °C8 June 2023	6.7 °C8 January 2023	25.8 °C	1,032 mm	251
2022	41.7 °C16 April 2022	8.6 °C29 January 2022	25.4 °C	1,311 mm	240
2021	40.1 °C24 April 2021	6.8 °C1 February 2021	24.7 °C	1,975 mm	220
2020	40.9 °C25 May 2020	7.2 °C21 December 2020	24.6 °C	1,775 mm	225
2019	43.1 °C15 June 2019	4.6 °C31 December 2019	25.3 °C	1,558 mm	224
2018	40.0 °C22 April 2018	6.3 °C30 December 2018	25.1 °C	1,169 mm	253
2017	41.1 °C25 May 2017	7.1 °C15 January 2017	25.4 °C	1,456 mm	241
2016	43.0 °C11 April 2016	6.9 °C18 January 2016	25.6 °C	1,377 mm	256
2015	43.6 °C6 June 2015	6.4 °C22 January 2015	25.5 °C	1,003 mm	244
2014	42.7 °C11 May 2014	6.6 °C9 January 2014	24.9 °C	1,635 mm	219
2013	41.0 °C12 April 2013	3.3 °C9 January 2013	24.9 °C	1,411 mm	217
2012	42.5 °C14 June 2012	6.4 °C31 January 2012	25.0 °C	1,384 mm	230
2011	38.6 °C21 April 2011	5.4 °C12 January 2011	24.5 °C	1,337 mm	222
2010	44.0 °C8 June 2010	5.5 °C12 January 2010	25.5 °C	1,256 mm	238
2009	42.5 °C9 May 2009	7.8 °C29 December 2009	25.5 °C	1,390 mm	244
2008	42.3 °C25 April 2008	5.9 °C2 February 2008	25.0 °C	1,488 mm	228
2007	44.2 °C2 June 2007	6.1 °C16 January 2007	24.9 °C	1,953 mm	193
2006	42.0 °C1 May 2006	6.8 °C9 January 2006	25.5 °C	1,067 mm	237
2005	44.6 °C1 June 2005	7.8 °C28 December 2005	25.7 °C	1,258 mm	246
2004	44.1 °C15 May 2004	6.9 °C28 December 2004	24.7 °C	1,469 mm	227
2003	42.7 °C29 May 2003	5.7 °C16 January 2003	24.8 °C	2,212 mm	216
2002	41.2 °C19 April 2002	7.7 °C3 January 2002	25.0 °C	1,159 mm	228
2001	41.5 °C11 April 2001	6.6 °C9 January 2001	24.9 °C	1,720 mm	229
2000	41.4 °C12 May 2000	7.0 °C17 January 2000	24.5 °C	1,359 mm	224
1999	42.1 °C26 April 1999	6.7 °C12 January 1999	25.2 °C	2,266 mm	225
1998	44.2 °C8 June 1998	6.6 °C20 January 1998	25.2 °C	1,505 mm	222
1997	42.7 °C15 May 1997	5.4 °C14 January 1997	24.3 °C	1,334 mm	214
1996	44.5 °C28 May 1996	7.1 °C9 December 1996	25.3 °C	1,483 mm	224
1995	45.0 °C25 May 1995	5.3 °C2 January 1995	25.5 °C	1,730 mm	231
1994	44.5 °C4 May 1994	7.5 °C24 December 1994	25.4 °C	1,011 mm	239
1993	39.8 °C7 April 1993	5.5 °C26 January 1993	24.7 °C	1,292 mm	221
1992	42.3 °C13 April 1992	5.8 °C1 January 1992	24.9 °C	910 mm	245
1991	41.3 °C10 May 1991	5.5 °C16 January 1991	24.7 °C	1,156 mm	234
1990	41.2 °C21 April 1990	6.4 °C1 January 1990	24.5 °C	1,545 mm	204
1989	45.5 °C6 May 1989	6.2 °C31 December 1989	24.4 °C	1,223 mm	217
1988	42.7 °C7 April 1988	6.5 °C27 January 1988	25.2 °C	1,375 mm	231
1987	43.4 °C24 May 1987	8.4 °C2 January 1987	25.1 °C	2,173 mm	208
1986	42.1 °C30 March 1986	6.9 °C19 January 1986	24.7 °C	1,048 mm	200
1985	42.2 °C25 April 1985	6.9 °C15 January 1985	24.9 °C	1,624 mm	200
1984	41.7 °C20 April 1984	6.0 °C25 January 1984	24.6 °C	1,552 mm	221
1983	43.0 °C20 June 1983	6.1 °C2 February 1983	24.8 °C	1,145 mm	237
1982	43.2 °C27 May 1982	8.0 °C27 December 1982	25.0 °C	976 mm	231
1981	41.3 °C14 June 1981	6.7 °C16 January 1981	24.5 °C	1,352 mm	213
1980	43.5 °C28 April 1980	6.5 °C13 January 1980	25.3 °C	1,148 mm	246
1979	44.9 °C6 June 1979	7.6 °C3 January 1979	25.5 °C	1,040 mm	211
1978	42.9 °C19 May 1978	5.8 °C5 January 1978	24.8 °C	1,429 mm	228
1977	43.6 °C1 June 1977	6.8 °C18 January 1977	25.1 °C	949 mm	222
1976	41.5 °C4 May 1976	6.2 °C12 December 1976	24.6 °C	1,425 mm	232
1975	42.4 °C30 April 1975	6.1 °C1 January 1975	25.0 °C	1,653 mm	214
1974	42.4 °C3 June 1974	6.4 °C17 January 1974	24.7 °C	1,461 mm	211
1973	43.9 °C15 April 1973	7.1 °C26 December 1973	25.2 °C	2,383 mm	191
1972	43.7 °C11 June 1972	7.9 °C16 January 1972	25.2 °C	1,342 mm	217
1971	37.3 °C28 March 1971	7.1 °C3 February 1971	23.8 °C	1,660 mm	150
1970	41.6 °C3 May 1970	7.5 °C28 December 1970	24.5 °C	1,742 mm	201
1969	41.6 °C18 May 1969	6.9 °C12 January 1969	24.5 °C	1,112 mm	200
1968	42.2 °C26 May 1968	6.2 °C30 December 1968	24.1 °C	1,516 mm	174
1967	42.7 °C3 June 1967	5.3 °C18 January 1967	24.2 °C	1,385 mm	192
1966	45.0 °C11 June 1966	6.8 °C19 January 1966	24.6 °C	1,174 mm	179
1965	43.1 °C6 June 1965	6.3 °C9 January 1965	24.3 °C	1,231 mm	157
1964	45.9 °C7 June 1964	4.1 °C19 January 1964	24.9 °C	1,690 mm	201
1963	41.7 °C17 May 1963	6.2 °C4 January 1963	24.5 °C	2,329 mm	205
1962	40.7 °C21 May 1962	6.4 °C16 January 1962	24.0 °C	1,927 mm	181
1961	43.7 °C20 May 1961	6.6 °C27 December 1961	24.2 °C	1,325 mm	189
1960	44.8 °C5 May 1960	8.2 °C11 January 1960	25.2 °C	1,488 mm	198
1959	44.6 °C18 May 1959	7.5 °C11 January 1959	24.7 °C	1,482 mm	183
1958	44.7 °C25 May 1958	8.0 °C19 January 1958	25.2 °C	1,765 mm	193
1957	46.3 °C26 May 1957	7.1 °C13 February 1957	25.1 °C	1,697 mm	201
1956	42.4 °C19 April 1956	6.8 °C7 February 1956	24.2 °C	1,879 mm	187
1955	42.9 °C30 May 1955	5.4 °C2 January 1955	24.5 °C	1,758 mm	181
1954	42.9 °C13 May 1954	7.3 °C31 December 1954	24.3 °C	1,532 mm	168
1953	34.2 °C1 June 1953	6.3 °C18 January 1953	23.0 °C	1,763 mm	127
1952	35.2 °C14 April 1952	7.7 °C30 December 1952	22.7 °C	2,310 mm	107
1951	40.2 °C19 May 1951	8.5 °C26 January 1951	23.5 °C	1,474 mm	156
1950	41.1 °C4 June 1950	5.0 °C12 February 1950	23.8 °C	2,393 mm	143
1949	35.1 °C19 June 1949	6.5 °C1 January 1949	22.9 °C	1,831 mm	117
1948	41.4 °C7 June 1948	7.1 °C17 January 1948	24.3 °C	1,290 mm	185
1947	42.1 °C18 May 1947	7.8 °C16 January 1947	24.7 °C	1,310 mm	183
1946	41.2 °C21 May 1946	6.7 °C2 January 1946	24.3 °C	1,243 mm	194
1945	40.4 °C2 April 1945	5.3 °C8 January 1945	23.9 °C	1,189 mm	186
1944	42.1 °C15 May 1944	6.7 °C19 January 1944	24.1 °C	1,355 mm	185
1943	37.8 °C4 April 1943	7.4 °C7 February 1943	23.5 °C	1,237 mm	146
1942	41.0 °C8 May 1942	7.5 °C5 January 1942	24.2 °C	1,425 mm	159
1941	40.1 °C30 May 1941	7.5 °C12 January 1941	23.9 °C	1,453 mm	179
1940	39.8 °C17 April 1940	6.6 °C5 January 1940	23.9 °C	1,092 mm	167

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

30.6 °C

+0.2 °C

Hot days (≥ 30 °C)

221 d/yr

+14

Frost days (< 0 °C)

0 d/yr

Annual rainfall

1435 mm

-44 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	21.7 °C	-0.9 °C	0 mm	-16 mm
Feb	26.3 °C	+0.3 °C	1 mm	-15 mm
Mar	32.3 °C	+0.3 °C	4 mm	-13 mm
Apr	34.7 °C	-1.7 °C	116 mm	+87 mm
May	34.7 °C	-2.1 °C	87 mm	+20 mm
Jun	35.4 °C	+0.8 °C	150 mm	-80 mm
Jul	34.9 °C	+3.3 °C	132 mm	-302 mm
Aug	32.6 °C	+1.1 °C	434 mm	+91 mm
Sep	32.9 °C	+1.7 °C	254 mm	+8 mm
Oct	30.9 °C	+0.5 °C	254 mm	+188 mm
Nov	28.4 °C	+0.5 °C	2 mm	-6 mm
Dec	22.4 °C	-1.8 °C	1 mm	-7 mm

The year's extremes

Hottest day

39.9 °C

11 Jun 2025

Coldest day

8.6 °C

3 Jan 2025

Wettest day

127.8 mm

4 Oct 2025

Windiest day

37.8 km/h

16 Jul 2025

Strongest gust

65.9 km/h

16 Jul 2025

Hottest feels-like

47.7 °C

24 Jul 2025

Coldest feels-like

7.1 °C

3 Jan 2025

Sunniest day

13.0 h

15 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 Birgunj?

Birgunj has a humid subtropical, dry winter climate (Köppen Cwa). Over 1940-2025, the average annual temperature is 24.7 °C and it receives 1,479 mm of precipitation per year.

What is the hottest day ever recorded in Birgunj?

The hottest day measured in Birgunj between 1940 and 2025 was 26 May 1957, reaching 46.3 °C.

What is the coldest day in Birgunj?

The coldest day measured in Birgunj between 1940 and 2025 was 9 January 2013, at 3.3 °C.

Does it snow in Birgunj?

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

Has the climate of Birgunj warmed?

Yes: Birgunj warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Birgunj?

The wettest day measured in Birgunj between 1940 and 2025 was 9 July 2003, with 342 mm of rain in 24 hours.

What was the windiest day in Birgunj?

The windiest day measured in Birgunj between 1940 and 2025 was 16 July 2025, with winds reaching 37.8 km/h.

What is the warmest month in Birgunj?

The warmest month in Birgunj is May (30.8 °C on average); the coldest is January (15.6 °C).

How much does it rain in Birgunj?

Birgunj receives on average 1,479 mm of precipitation per year, spread over about 134 rainy days.

Is it sunny in Birgunj?

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

Are there tropical nights in Birgunj?

Yes: Birgunj has on average 202 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Birgunj?

In Birgunj, between 1940 and 2025, the highest apparent temperature reached 49.1 °C on 21 May 1978, and the lowest was 1.3 °C on 9 January 2013.

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