Kollo climate — normals and trends

Q: What is the climate of Kollo?

Kollo has a hot desert climate (Köppen BWh). Over 1940-2025, the average annual temperature is 28.7 °C and it receives 347 mm of precipitation per year.

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

The hottest day measured in Kollo between 1940 and 2025 was 24 April 2024, reaching 45.0 °C.

Q: What is the coldest day in Kollo?

The coldest day measured in Kollo between 1940 and 2025 was 14 January 1957, at 8.6 °C.

Q: Does it snow in Kollo?

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

Q: Has the climate of Kollo warmed?

Yes: Kollo warmed by +2.1 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Kollo?

The wettest day measured in Kollo between 1940 and 2025 was 1 May 1979, with 108 mm of rain in 24 hours.

Q: What was the windiest day in Kollo?

The windiest day measured in Kollo between 1940 and 2025 was 27 April 2014, with winds reaching 37.5 km/h.

Q: What is the warmest month in Kollo?

The warmest month in Kollo is May (33.7 °C on average); the coldest is January (23.5 °C).

Q: How much does it rain in Kollo?

Kollo receives on average 347 mm of precipitation per year, spread over about 56 rainy days.

Q: Is it sunny in Kollo?

Kollo gets on average 11.1 hours of sunshine per day, roughly 4,052 hours per year over 1940-2025.

Kollo (Niger) has a hot desert climate (BWh) under the Köppen-Geiger classification. Its mean annual temperature is 28.7 °C and it receives 347 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 (33.7 °C on average) and the coldest is January (23.5 °C). Rainfall peaks in August.

Kollo averages 0 frost days, 334 hot days (≥ 30 °C) and 56 rainy days per year.

Kollo has warmed by +2.1 °C between 1940 and 2025, or +0.25 °C per decade. This trend is statistically significant.

The hottest day of the period reached 45.0 °C (on 24 April 2024) and the coldest 8.6 °C (on 14 January 1957).

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

KolloTillabéri Region

coords: 13.30°, 2.34°
period: 1940–2025 · 86 yrs

BWhHot desertWarmest monthMayColdest monthJanuaryWettest monthAugustDriest monthJanuary

Mean daily temperature

28.7°C

Average daily high

35.3°C

Average daily low

22.5°C

Annual rainfall

347mm

Sunshine / day

11.1h

Mean relative humidity

41%

Average peak wind

17.0km/h

Seasonal range

10.2°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

334 d/yr

Rainy days (≥ 1 mm)

56 d/yr

Annual snowfall

0.0 cm

Average feels-like high

36.2 °C

Average feels-like low

22.3 °C

Average peak gust

33.3 km/h

Tropical nights (≥ 20 °C)

258 d/yr

Solar radiation

22.6 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+2.1 °C

since 1940

+0.3 °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

45.0 °C

24 April 2024

Coldest day

8.6 °C

14 January 1957

Wettest day

108 mm

1 May 1979

Windiest day

37.5 km/h

27 April 2014

Strongest gust

64.1 km/h

13 June 2002

Hottest feels-like

48.1 °C

27 May 1998

Coldest feels-like

4.4 °C

13 January 1957

Sunniest day

12.1 h

4 June 1942

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	44.9 °C12 May 2025	14.0 °C13 January 2025	29.8 °C	277 mm	347
2024	45.0 °C24 April 2024	14.1 °C25 December 2024	29.5 °C	377 mm	337
2023	43.4 °C10 May 2023	13.8 °C14 January 2023	30.0 °C	195 mm	351
2022	43.6 °C7 April 2022	13.9 °C23 January 2022	29.2 °C	266 mm	331
2021	43.7 °C2 May 2021	14.5 °C23 January 2021	29.9 °C	209 mm	353
2020	43.7 °C28 April 2020	13.8 °C3 January 2020	29.4 °C	353 mm	340
2019	43.9 °C7 May 2019	14.4 °C22 January 2019	29.5 °C	325 mm	349
2018	43.1 °C8 May 2018	12.7 °C13 January 2018	29.4 °C	265 mm	339
2017	43.1 °C23 June 2017	13.2 °C11 January 2017	29.1 °C	379 mm	341
2016	43.8 °C1 May 2016	13.8 °C2 February 2016	29.5 °C	361 mm	339
2015	43.1 °C23 May 2015	13.3 °C13 January 2015	29.2 °C	397 mm	312
2014	42.8 °C3 May 2014	14.3 °C27 December 2014	29.5 °C	319 mm	344
2013	43.1 °C20 May 2013	12.9 °C6 January 2013	29.6 °C	280 mm	333
2012	42.9 °C28 April 2012	11.0 °C17 January 2012	29.3 °C	446 mm	342
2011	43.3 °C19 April 2011	12.8 °C14 December 2011	29.8 °C	152 mm	347
2010	44.6 °C19 April 2010	13.0 °C12 December 2010	29.6 °C	306 mm	357
2009	42.8 °C17 April 2009	13.5 °C23 January 2009	29.8 °C	232 mm	351
2008	43.6 °C21 April 2008	10.6 °C25 January 2008	28.5 °C	252 mm	325
2007	41.9 °C4 April 2007	13.7 °C14 January 2007	28.9 °C	310 mm	317
2006	42.7 °C4 May 2006	12.0 °C25 December 2006	29.1 °C	255 mm	340
2005	42.8 °C14 April 2005	13.8 °C14 January 2005	29.5 °C	260 mm	337
2004	42.7 °C12 April 2004	13.4 °C29 January 2004	29.3 °C	210 mm	344
2003	42.7 °C19 May 2003	12.5 °C7 January 2003	29.2 °C	338 mm	338
2002	43.0 °C26 May 2002	13.2 °C27 December 2002	29.2 °C	307 mm	330
2001	43.2 °C27 April 2001	13.3 °C2 January 2001	29.0 °C	264 mm	343
2000	43.1 °C10 April 2000	12.7 °C15 February 2000	29.0 °C	217 mm	328
1999	42.5 °C17 April 1999	12.7 °C30 December 1999	28.9 °C	390 mm	333
1998	43.4 °C7 May 1998	13.2 °C16 January 1998	29.2 °C	396 mm	331
1997	41.8 °C25 April 1997	13.5 °C14 December 1997	29.3 °C	213 mm	344
1996	42.8 °C5 May 1996	12.9 °C20 December 1996	29.2 °C	217 mm	363
1995	42.8 °C20 April 1995	12.2 °C8 January 1995	29.1 °C	298 mm	324
1994	43.7 °C23 April 1994	12.5 °C17 January 1994	28.7 °C	385 mm	319
1993	43.2 °C18 May 1993	12.4 °C27 January 1993	29.3 °C	214 mm	333
1992	42.3 °C7 May 1992	13.4 °C27 December 1992	28.7 °C	246 mm	328
1991	44.2 °C23 April 1991	12.5 °C24 December 1991	28.8 °C	353 mm	334
1990	43.6 °C24 April 1990	13.5 °C8 February 1990	29.2 °C	234 mm	345
1989	43.1 °C4 May 1989	10.6 °C3 January 1989	28.4 °C	279 mm	320
1988	43.6 °C12 April 1988	12.7 °C4 January 1988	28.9 °C	392 mm	328
1987	43.8 °C10 May 1987	13.9 °C8 January 1987	29.6 °C	168 mm	352
1986	43.2 °C6 May 1986	11.7 °C1 January 1986	28.7 °C	431 mm	327
1985	43.1 °C27 May 1985	12.6 °C17 December 1985	28.9 °C	304 mm	323
1984	43.5 °C13 May 1984	11.0 °C22 December 1984	29.1 °C	212 mm	332
1983	43.7 °C9 May 1983	11.5 °C30 January 1983	29.0 °C	179 mm	331
1982	43.4 °C6 May 1982	10.3 °C11 January 1982	28.8 °C	253 mm	330
1981	44.0 °C26 April 1981	12.7 °C8 January 1981	28.6 °C	311 mm	341
1980	43.8 °C4 May 1980	11.4 °C26 December 1980	29.1 °C	343 mm	345
1979	41.2 °C30 March 1979	11.6 °C19 December 1979	28.4 °C	463 mm	335
1978	41.6 °C31 March 1978	13.4 °C13 January 1978	28.5 °C	452 mm	351
1977	43.4 °C21 May 1977	10.8 °C28 December 1977	28.1 °C	286 mm	335
1976	42.0 °C2 May 1976	11.8 °C21 January 1976	27.9 °C	396 mm	338
1975	41.5 °C28 March 1975	10.5 °C22 January 1975	27.9 °C	384 mm	310
1974	40.9 °C25 April 1974	12.8 °C9 December 1974	28.2 °C	326 mm	305
1973	43.5 °C21 April 1973	11.9 °C21 January 1973	29.5 °C	255 mm	352
1972	43.0 °C21 May 1972	13.3 °C22 January 1972	29.0 °C	318 mm	360
1971	43.6 °C26 May 1971	10.3 °C14 January 1971	28.6 °C	382 mm	334
1970	42.9 °C4 May 1970	13.1 °C6 December 1970	28.9 °C	287 mm	348
1969	44.8 °C6 April 1969	12.3 °C13 January 1969	28.9 °C	444 mm	351
1968	42.4 °C17 April 1968	10.3 °C20 January 1968	28.3 °C	445 mm	354
1967	42.5 °C14 May 1967	12.1 °C27 January 1967	28.3 °C	534 mm	318
1966	43.8 °C16 May 1966	11.0 °C7 January 1966	28.7 °C	320 mm	352
1965	41.8 °C29 April 1965	11.8 °C12 December 1965	28.2 °C	332 mm	345
1964	42.3 °C14 March 1964	12.9 °C11 January 1964	28.3 °C	414 mm	328
1963	41.9 °C1 June 1963	12.8 °C9 January 1963	28.8 °C	234 mm	363
1962	42.0 °C6 April 1962	10.7 °C7 January 1962	28.4 °C	392 mm	336
1961	43.1 °C1 May 1961	11.4 °C16 December 1961	27.7 °C	299 mm	331
1960	42.7 °C20 April 1960	11.2 °C28 December 1960	28.5 °C	249 mm	334
1959	41.6 °C13 April 1959	11.1 °C30 December 1959	28.0 °C	383 mm	323
1958	42.5 °C10 April 1958	12.5 °C10 January 1958	28.5 °C	640 mm	320
1957	41.6 °C3 May 1957	8.6 °C14 January 1957	27.0 °C	605 mm	304
1956	42.5 °C29 May 1956	9.4 °C1 January 1956	27.7 °C	700 mm	293
1955	42.0 °C19 April 1955	10.2 °C22 January 1955	27.6 °C	319 mm	336
1954	42.3 °C19 May 1954	10.1 °C1 January 1954	27.7 °C	521 mm	311
1953	42.9 °C27 April 1953	10.9 °C31 December 1953	27.9 °C	420 mm	325
1952	42.3 °C24 May 1952	10.3 °C6 February 1952	27.4 °C	521 mm	322
1951	42.2 °C15 March 1951	11.2 °C30 December 1951	27.7 °C	504 mm	352
1950	42.0 °C30 May 1950	11.4 °C22 December 1950	27.1 °C	588 mm	311
1949	42.6 °C4 May 1949	12.6 °C19 January 1949	29.0 °C	210 mm	346
1948	42.1 °C23 May 1948	9.7 °C6 February 1948	27.1 °C	453 mm	315
1947	41.7 °C10 May 1947	9.4 °C21 January 1947	26.8 °C	745 mm	285
1946	42.9 °C8 May 1946	10.5 °C1 January 1946	27.8 °C	325 mm	336
1945	42.0 °C1 May 1945	9.8 °C5 February 1945	26.7 °C	520 mm	293
1944	42.7 °C9 June 1944	12.7 °C28 November 1944	27.3 °C	554 mm	305
1943	41.8 °C5 May 1943	10.2 °C24 December 1943	27.1 °C	437 mm	301
1942	42.5 °C30 April 1942	10.0 °C27 January 1942	27.9 °C	365 mm	335
1941	42.6 °C12 May 1941	10.2 °C2 January 1941	29.3 °C	196 mm	358
1940	42.0 °C6 May 1940	10.7 °C28 January 1940	28.9 °C	187 mm	364

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

36.5 °C

+1.2 °C

Hot days (≥ 30 °C)

347 d/yr

+13

Frost days (< 0 °C)

0 d/yr

Annual rainfall

277 mm

-70 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	33.1 °C	+1.6 °C	0 mm	-0 mm
Feb	35.5 °C	+1.1 °C	0 mm	-0 mm
Mar	41.3 °C	+3.4 °C	0 mm	-2 mm
Apr	42.0 °C	+1.9 °C	0 mm	-4 mm
May	41.0 °C	+1.4 °C	6 mm	-10 mm
Jun	37.6 °C	+0.6 °C	15 mm	-16 mm
Jul	33.1 °C	-0.4 °C	66 mm	-20 mm
Aug	31.3 °C	-0.2 °C	149 mm	+7 mm
Sep	33.6 °C	+0.2 °C	41 mm	-16 mm
Oct	37.5 °C	+0.8 °C	2 mm	-9 mm
Nov	37.0 °C	+1.3 °C	0 mm	-0 mm
Dec	35.0 °C	+2.6 °C	0 mm	-0 mm

The year's extremes

Hottest day

44.9 °C

12 May 2025

Coldest day

14.0 °C

13 Jan 2025

Wettest day

32.1 mm

1 Aug 2025

Windiest day

30.1 km/h

2 Jun 2025

Strongest gust

51.5 km/h

2 Jun 2025

Hottest feels-like

47.3 °C

23 May 2025

Coldest feels-like

10.9 °C

13 Jan 2025

Sunniest day

12.1 h

25 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 Kollo?

Kollo has a hot desert climate (Köppen BWh). Over 1940-2025, the average annual temperature is 28.7 °C and it receives 347 mm of precipitation per year.

What is the hottest day ever recorded in Kollo?

The hottest day measured in Kollo between 1940 and 2025 was 24 April 2024, reaching 45.0 °C.

What is the coldest day in Kollo?

The coldest day measured in Kollo between 1940 and 2025 was 14 January 1957, at 8.6 °C.

Does it snow in Kollo?

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

Has the climate of Kollo warmed?

Yes: Kollo warmed by +2.1 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Kollo?

The wettest day measured in Kollo between 1940 and 2025 was 1 May 1979, with 108 mm of rain in 24 hours.

What was the windiest day in Kollo?

The windiest day measured in Kollo between 1940 and 2025 was 27 April 2014, with winds reaching 37.5 km/h.

What is the warmest month in Kollo?

The warmest month in Kollo is May (33.7 °C on average); the coldest is January (23.5 °C).

How much does it rain in Kollo?

Kollo receives on average 347 mm of precipitation per year, spread over about 56 rainy days.

Is it sunny in Kollo?

Kollo gets on average 11.1 hours of sunshine per day, roughly 4,052 hours per year over 1940-2025.

Are there tropical nights in Kollo?

Yes: Kollo has on average 258 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Kollo?

In Kollo, between 1940 and 2025, the highest apparent temperature reached 48.1 °C on 27 May 1998, and the lowest was 4.4 °C on 13 January 1957.

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