Diphu climate — normals and trends

Q: What is the climate of Diphu?

Diphu has a humid subtropical, dry winter climate (Köppen Cwa). Over 1940-2025, the average annual temperature is 23.0 °C and it receives 1,634 mm of precipitation per year.

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

The hottest day measured in Diphu between 1940 and 2025 was 1 June 1979, reaching 40.4 °C.

Q: What is the coldest day in Diphu?

The coldest day measured in Diphu between 1940 and 2025 was 5 January 1983, at 2.9 °C.

Q: Does it snow in Diphu?

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

Q: Has the climate of Diphu warmed?

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

Q: What is the wettest day in Diphu?

The wettest day measured in Diphu between 1940 and 2025 was 29 May 1988, with 246 mm of rain in 24 hours.

Q: What was the windiest day in Diphu?

The windiest day measured in Diphu between 1940 and 2025 was 1 October 1966, with winds reaching 32.5 km/h.

Q: What is the warmest month in Diphu?

The warmest month in Diphu is July (27.7 °C on average); the coldest is January (15.4 °C).

Q: How much does it rain in Diphu?

Diphu receives on average 1,634 mm of precipitation per year, spread over about 169 rainy days.

Q: Is it sunny in Diphu?

Diphu gets on average 9.7 hours of sunshine per day, roughly 3,540 hours per year over 1940-2025.

Diphu (India) has a humid subtropical, dry winter climate (Cwa) under the Köppen-Geiger classification. Its mean annual temperature is 23.0 °C and it receives 1,634 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 July (27.7 °C on average) and the coldest is January (15.4 °C). Rainfall peaks in June.

Diphu averages 0 frost days, 130 hot days (≥ 30 °C) and 169 rainy days per year.

Diphu has warmed by +1.5 °C between 1940 and 2025, or +0.18 °C per decade. This trend is statistically significant.

The hottest day of the period reached 40.4 °C (on 1 June 1979) and the coldest 2.9 °C (on 5 January 1983).

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

DiphuAssam

coords: 25.84°, 93.43°
period: 1940–2025 · 86 yrs

CwaHumid subtropical, dry winterWarmest monthJulyColdest monthJanuaryWettest monthJuneDriest monthDecember

Mean daily temperature

23.0°C

Average daily high

27.9°C

Average daily low

18.6°C

Annual rainfall

1,634mm

Sunshine / day

9.7h

Mean relative humidity

81%

Average peak wind

7.6km/h

Seasonal range

12.3°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

130 d/yr

Rainy days (≥ 1 mm)

169 d/yr

Annual snowfall

0.0 cm

Average feels-like high

31.7 °C

Average feels-like low

21.0 °C

Average peak gust

24.7 km/h

Tropical nights (≥ 20 °C)

183 d/yr

Solar radiation

16.2 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.5 °C

since 1940

+0.2 °C per decade · r² = 0.62 · 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

40.4 °C

1 June 1979

Coldest day

2.9 °C

5 January 1983

Wettest day

246 mm

29 May 1988

Windiest day

32.5 km/h

1 October 1966

Strongest gust

77.4 km/h

30 March 1970

Hottest feels-like

46.0 °C

27 July 2024

Coldest feels-like

0.9 °C

5 January 1983

Sunniest day

13.2 h

2 July 1942

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	36.9 °C12 June 2025	10.5 °C2 January 2025	24.6 °C	1,386 mm	193
2024	37.2 °C27 July 2024	6.6 °C20 January 2024	24.1 °C	1,817 mm	183
2023	37.2 °C5 June 2023	8.0 °C19 January 2023	24.4 °C	1,222 mm	196
2022	35.7 °C11 August 2022	8.8 °C13 February 2022	23.9 °C	1,411 mm	169
2021	36.7 °C26 April 2021	8.7 °C2 January 2021	24.2 °C	1,091 mm	180
2020	36.1 °C20 September 2020	6.7 °C25 January 2020	23.7 °C	1,282 mm	169
2019	35.9 °C6 August 2019	7.9 °C18 January 2019	23.8 °C	1,577 mm	178
2018	35.6 °C5 June 2018	8.1 °C9 January 2018	23.9 °C	957 mm	183
2017	34.6 °C7 June 2017	7.0 °C14 January 2017	24.0 °C	1,975 mm	150
2016	34.9 °C3 August 2016	6.9 °C15 January 2016	23.9 °C	2,126 mm	168
2015	35.4 °C26 July 2015	6.4 °C26 December 2015	23.6 °C	1,855 mm	158
2014	38.9 °C24 April 2014	7.2 °C10 January 2014	23.9 °C	1,308 mm	188
2013	36.9 °C12 June 2013	5.1 °C12 January 2013	23.3 °C	1,668 mm	168
2012	35.5 °C2 April 2012	6.2 °C15 January 2012	23.2 °C	1,604 mm	170
2011	34.9 °C31 August 2011	6.2 °C22 January 2011	23.4 °C	1,425 mm	181
2010	35.7 °C20 March 2010	6.4 °C2 January 2010	23.7 °C	2,015 mm	161
2009	35.6 °C13 July 2009	7.3 °C28 December 2009	23.9 °C	1,265 mm	177
2008	35.1 °C12 May 2008	6.9 °C4 February 2008	23.2 °C	1,387 mm	154
2007	36.1 °C5 May 2007	6.2 °C19 January 2007	23.0 °C	1,849 mm	129
2006	36.4 °C25 May 2006	7.2 °C13 January 2006	23.6 °C	1,194 mm	170
2005	34.7 °C2 June 2005	6.9 °C13 January 2005	23.5 °C	932 mm	145
2004	35.0 °C27 March 2004	6.2 °C30 December 2004	22.8 °C	2,095 mm	115
2003	34.6 °C26 July 2003	6.9 °C26 January 2003	22.9 °C	1,581 mm	108
2002	34.2 °C17 May 2002	7.8 °C1 January 2002	23.0 °C	1,767 mm	127
2001	36.0 °C25 April 2001	6.8 °C8 January 2001	23.2 °C	1,769 mm	139
2000	35.3 °C13 May 2000	6.4 °C4 January 2000	22.6 °C	2,227 mm	121
1999	36.4 °C14 April 1999	6.9 °C13 January 1999	23.7 °C	1,251 mm	155
1998	34.3 °C19 May 1998	7.4 °C22 January 1998	23.4 °C	1,680 mm	144
1997	35.9 °C16 May 1997	5.2 °C18 January 1997	22.5 °C	1,461 mm	112
1996	34.7 °C23 May 1996	7.3 °C23 January 1996	23.2 °C	1,725 mm	141
1995	34.8 °C29 May 1995	5.4 °C25 January 1995	23.1 °C	1,950 mm	132
1994	34.9 °C14 May 1994	7.3 °C6 January 1994	23.1 °C	1,479 mm	140
1993	33.0 °C6 April 1993	6.8 °C17 January 1993	22.6 °C	2,263 mm	102
1992	35.8 °C4 June 1992	5.5 °C4 January 1992	22.8 °C	1,301 mm	143
1991	34.4 °C21 August 1991	5.7 °C22 January 1991	22.9 °C	1,520 mm	122
1990	33.2 °C19 August 1990	6.3 °C1 January 1990	22.8 °C	1,630 mm	112
1989	36.0 °C21 April 1989	5.5 °C13 January 1989	23.0 °C	1,690 mm	144
1988	37.7 °C8 April 1988	6.3 °C28 January 1988	23.4 °C	2,195 mm	113
1987	34.8 °C26 May 1987	5.8 °C4 January 1987	23.1 °C	1,365 mm	127
1986	36.8 °C8 June 1986	7.2 °C15 January 1986	23.1 °C	1,646 mm	127
1985	34.1 °C26 April 1985	5.8 °C17 January 1985	23.0 °C	1,264 mm	127
1984	35.7 °C2 June 1984	6.9 °C22 January 1984	23.0 °C	1,482 mm	139
1983	34.2 °C9 June 1983	2.9 °C5 January 1983	22.5 °C	1,989 mm	114
1982	35.8 °C24 May 1982	6.1 °C28 December 1982	22.7 °C	1,653 mm	129
1981	33.5 °C12 June 1981	6.2 °C11 January 1981	22.8 °C	1,087 mm	121
1980	34.6 °C16 April 1980	5.9 °C8 January 1980	22.7 °C	1,855 mm	124
1979	40.4 °C1 June 1979	4.6 °C8 January 1979	23.4 °C	1,105 mm	153
1978	34.4 °C29 April 1978	4.6 °C12 January 1978	22.7 °C	1,381 mm	142
1977	34.0 °C20 March 1977	4.9 °C31 January 1977	22.6 °C	1,475 mm	109
1976	34.8 °C30 March 1976	5.5 °C2 January 1976	22.7 °C	1,631 mm	121
1975	34.0 °C2 April 1975	5.6 °C20 January 1975	22.6 °C	2,021 mm	119
1974	34.1 °C12 August 1974	5.9 °C6 January 1974	22.5 °C	1,898 mm	104
1973	37.5 °C3 April 1973	6.7 °C26 December 1973	23.1 °C	2,023 mm	134
1972	35.4 °C10 June 1972	6.3 °C19 January 1972	22.8 °C	1,496 mm	122
1971	33.7 °C20 March 1971	6.1 °C4 January 1971	22.4 °C	1,662 mm	102
1970	34.5 °C21 August 1970	5.5 °C30 January 1970	22.9 °C	1,620 mm	141
1969	35.4 °C18 May 1969	4.1 °C17 January 1969	23.0 °C	1,429 mm	160
1968	34.7 °C8 May 1968	5.1 °C18 January 1968	22.4 °C	1,983 mm	108
1967	34.0 °C31 May 1967	6.5 °C31 January 1967	22.4 °C	1,908 mm	105
1966	35.5 °C3 May 1966	7.7 °C29 January 1966	22.6 °C	1,876 mm	89
1965	35.0 °C7 June 1965	7.0 °C10 January 1965	22.4 °C	1,785 mm	91
1964	36.8 °C16 March 1964	5.2 °C30 January 1964	23.1 °C	2,028 mm	138
1963	35.8 °C1 April 1963	6.5 °C14 January 1963	22.8 °C	1,613 mm	128
1962	35.8 °C31 March 1962	3.0 °C4 January 1962	22.7 °C	1,842 mm	135
1961	34.1 °C25 June 1961	4.6 °C26 December 1961	22.6 °C	1,911 mm	113
1960	39.7 °C30 April 1960	5.4 °C25 January 1960	23.4 °C	1,511 mm	140
1959	33.9 °C14 April 1959	6.8 °C2 February 1959	22.4 °C	2,386 mm	98
1958	35.8 °C27 March 1958	6.5 °C1 February 1958	23.2 °C	2,141 mm	141
1957	38.1 °C12 April 1957	7.1 °C25 December 1957	22.7 °C	1,607 mm	137
1956	37.5 °C18 April 1956	6.7 °C17 January 1956	22.7 °C	1,753 mm	118
1955	35.1 °C23 April 1955	6.7 °C26 December 1955	22.7 °C	1,585 mm	118
1954	35.7 °C23 March 1954	7.0 °C26 January 1954	22.8 °C	1,725 mm	106
1953	33.7 °C14 August 1953	4.4 °C26 January 1953	22.2 °C	1,569 mm	73
1952	34.3 °C15 April 1952	7.8 °C13 January 1952	22.5 °C	1,485 mm	93
1951	34.6 °C9 April 1951	7.5 °C26 January 1951	22.6 °C	1,552 mm	89
1950	35.1 °C25 April 1950	6.8 °C14 February 1950	22.6 °C	1,418 mm	99
1949	33.1 °C17 June 1949	7.4 °C3 January 1949	22.4 °C	1,731 mm	71
1948	33.9 °C13 March 1948	7.8 °C18 January 1948	22.3 °C	1,614 mm	96
1947	36.4 °C18 May 1947	7.5 °C17 January 1947	23.0 °C	1,874 mm	123
1946	35.6 °C13 March 1946	8.0 °C2 January 1946	23.2 °C	1,070 mm	141
1945	35.8 °C4 April 1945	7.0 °C18 February 1945	22.6 °C	1,720 mm	103
1944	33.8 °C13 March 1944	8.3 °C20 January 1944	22.7 °C	1,338 mm	110
1943	33.1 °C4 July 1943	7.2 °C25 January 1943	21.9 °C	1,254 mm	54
1942	34.5 °C19 April 1942	7.5 °C6 February 1942	22.2 °C	1,623 mm	89
1941	32.7 °C16 March 1941	6.8 °C24 January 1941	22.0 °C	1,773 mm	57
1940	32.7 °C30 June 1940	4.7 °C8 January 1940	21.9 °C	1,807 mm	73

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

29.8 °C

+1.9 °C

Hot days (≥ 30 °C)

193 d/yr

+63

Frost days (< 0 °C)

0 d/yr

Annual rainfall

1386 mm

-248 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	24.7 °C	+2.5 °C	5 mm	-9 mm
Feb	26.7 °C	+1.7 °C	4 mm	-21 mm
Mar	30.8 °C	+1.9 °C	55 mm	-11 mm
Apr	32.9 °C	+2.9 °C	38 mm	-120 mm
May	30.8 °C	+0.6 °C	244 mm	-6 mm
Jun	32.8 °C	+2.0 °C	187 mm	-92 mm
Jul	32.7 °C	+2.0 °C	345 mm	+99 mm
Aug	31.7 °C	+1.2 °C	227 mm	-9 mm
Sep	31.9 °C	+2.0 °C	190 mm	-4 mm
Oct	30.7 °C	+2.3 °C	67 mm	-58 mm
Nov	27.5 °C	+1.9 °C	24 mm	-7 mm
Dec	24.7 °C	+1.9 °C	1 mm	-11 mm

The year's extremes

Hottest day

36.9 °C

12 Jun 2025

Coldest day

10.5 °C

2 Jan 2025

Wettest day

54.8 mm

27 Jul 2025

Windiest day

25.4 km/h

23 Apr 2025

Strongest gust

66.2 km/h

23 Apr 2025

Hottest feels-like

45.8 °C

12 Jun 2025

Coldest feels-like

10.2 °C

2 Jan 2025

Sunniest day

13.0 h

6 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 Diphu?

Diphu has a humid subtropical, dry winter climate (Köppen Cwa). Over 1940-2025, the average annual temperature is 23.0 °C and it receives 1,634 mm of precipitation per year.

What is the hottest day ever recorded in Diphu?

The hottest day measured in Diphu between 1940 and 2025 was 1 June 1979, reaching 40.4 °C.

What is the coldest day in Diphu?

The coldest day measured in Diphu between 1940 and 2025 was 5 January 1983, at 2.9 °C.

Does it snow in Diphu?

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

Has the climate of Diphu warmed?

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

What is the wettest day in Diphu?

The wettest day measured in Diphu between 1940 and 2025 was 29 May 1988, with 246 mm of rain in 24 hours.

What was the windiest day in Diphu?

The windiest day measured in Diphu between 1940 and 2025 was 1 October 1966, with winds reaching 32.5 km/h.

What is the warmest month in Diphu?

The warmest month in Diphu is July (27.7 °C on average); the coldest is January (15.4 °C).

How much does it rain in Diphu?

Diphu receives on average 1,634 mm of precipitation per year, spread over about 169 rainy days.

Is it sunny in Diphu?

Diphu gets on average 9.7 hours of sunshine per day, roughly 3,540 hours per year over 1940-2025.

Are there tropical nights in Diphu?

Yes: Diphu has on average 183 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Diphu?

In Diphu, between 1940 and 2025, the highest apparent temperature reached 46.0 °C on 27 July 2024, and the lowest was 0.9 °C on 5 January 1983.

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