Ouésso climate — normals and trends

Q: What is the climate of Ouésso?

Ouésso has a tropical rainforest climate (Köppen Af). Over 1940-2025, the average annual temperature is 24.7 °C and it receives 1,578 mm of precipitation per year.

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

The hottest day measured in Ouésso between 1940 and 2025 was 29 March 2024, reaching 37.4 °C.

Q: What is the coldest day in Ouésso?

The coldest day measured in Ouésso between 1940 and 2025 was 13 January 2015, at 14.0 °C.

Q: Does it snow in Ouésso?

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

Q: Has the climate of Ouésso warmed?

Yes: Ouésso warmed by +1.4 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Ouésso?

The wettest day measured in Ouésso between 1940 and 2025 was 19 September 2010, with 177 mm of rain in 24 hours.

Q: What was the windiest day in Ouésso?

The windiest day measured in Ouésso between 1940 and 2025 was 5 April 1967, with winds reaching 19.3 km/h.

Q: What is the warmest month in Ouésso?

The warmest month in Ouésso is February (25.4 °C on average); the coldest is September (24.0 °C).

Q: How much does it rain in Ouésso?

Ouésso receives on average 1,578 mm of precipitation per year, spread over about 244 rainy days.

Q: Is it sunny in Ouésso?

Ouésso gets on average 9.5 hours of sunshine per day, roughly 3,468 hours per year over 1940-2025.

Ouésso (Congo Republic) has a tropical rainforest climate (Af) under the Köppen-Geiger classification. Its mean annual temperature is 24.7 °C and it receives 1,578 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 February (25.4 °C on average) and the coldest is September (24.0 °C). Rainfall peaks in October.

Ouésso averages 0 frost days, 141 hot days (≥ 30 °C) and 244 rainy days per year.

Ouésso has warmed by +1.4 °C between 1940 and 2025, or +0.17 °C per decade. This trend is statistically significant.

The hottest day of the period reached 37.4 °C (on 29 March 2024) and the coldest 14.0 °C (on 13 January 2015).

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

OuéssoSangha Department

coords: 1.61°, 16.05°
period: 1940–2025 · 86 yrs

AfTropical rainforestWarmest monthFebruaryColdest monthSeptemberWettest monthOctoberDriest monthJanuary

Mean daily temperature

24.7°C

Average daily high

29.4°C

Average daily low

21.6°C

Annual rainfall

1,578mm

Sunshine / day

9.5h

Mean relative humidity

86%

Average peak wind

8.5km/h

Seasonal range

1.4°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

141 d/yr

Rainy days (≥ 1 mm)

244 d/yr

Annual snowfall

0.0 cm

Average feels-like high

34.8 °C

Average feels-like low

25.1 °C

Average peak gust

24.1 km/h

Tropical nights (≥ 20 °C)

353 d/yr

Solar radiation

17.7 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.4 °C

since 1940

+0.2 °C per decade · r² = 0.53 · 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

37.4 °C

29 March 2024

Coldest day

14.0 °C

13 January 2015

Wettest day

177 mm

19 September 2010

Windiest day

19.3 km/h

5 April 1967

Strongest gust

48.6 km/h

15 July 1950

Hottest feels-like

43.7 °C

28 February 2024

Coldest feels-like

12.6 °C

18 July 1950

Sunniest day

12.0 h

28 March 1940

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	36.0 °C25 March 2025	18.9 °C12 January 2025	25.8 °C	1,176 mm	240
2024	37.4 °C29 March 2024	18.2 °C16 January 2024	26.3 °C	1,101 mm	282
2023	36.4 °C5 March 2023	18.8 °C19 February 2023	25.7 °C	1,354 mm	237
2022	36.3 °C9 March 2022	16.8 °C31 January 2022	25.6 °C	1,081 mm	232
2021	35.0 °C5 March 2021	19.4 °C18 February 2021	25.7 °C	1,104 mm	245
2020	37.0 °C21 February 2020	15.8 °C25 January 2020	25.9 °C	1,221 mm	250
2019	35.3 °C30 March 2019	20.2 °C25 August 2019	25.7 °C	1,258 mm	228
2018	34.9 °C18 April 2018	17.0 °C6 January 2018	25.5 °C	1,241 mm	224
2017	36.1 °C6 March 2017	20.4 °C24 March 2017	25.5 °C	1,400 mm	201
2016	36.1 °C4 March 2016	16.3 °C30 January 2016	25.8 °C	1,322 mm	236
2015	34.8 °C23 April 2015	14.0 °C13 January 2015	25.3 °C	1,204 mm	217
2014	35.0 °C22 February 2014	20.0 °C18 February 2014	25.2 °C	1,266 mm	196
2013	36.1 °C23 February 2013	17.9 °C17 December 2013	25.3 °C	1,239 mm	207
2012	34.6 °C1 May 2012	18.6 °C16 January 2012	25.1 °C	1,424 mm	201
2011	35.6 °C8 May 2011	16.6 °C18 January 2011	25.1 °C	1,233 mm	205
2010	34.9 °C5 February 2010	19.6 °C10 December 2010	25.4 °C	1,470 mm	193
2009	34.4 °C19 May 2009	19.9 °C1 September 2009	25.2 °C	1,308 mm	192
2008	34.5 °C3 March 2008	15.9 °C31 January 2008	24.8 °C	1,409 mm	170
2007	36.3 °C5 February 2007	16.7 °C3 January 2007	25.0 °C	1,228 mm	180
2006	33.9 °C24 January 2006	18.8 °C31 December 2006	24.9 °C	1,366 mm	162
2005	36.2 °C19 February 2005	17.3 °C9 January 2005	25.4 °C	1,181 mm	208
2004	34.4 °C18 February 2004	18.2 °C7 February 2004	25.0 °C	1,253 mm	173
2003	34.0 °C18 February 2003	19.0 °C2 January 2003	24.9 °C	1,408 mm	167
2002	34.8 °C24 February 2002	15.9 °C15 January 2002	24.9 °C	1,434 mm	162
2001	33.8 °C13 May 2001	17.7 °C10 January 2001	24.6 °C	1,334 mm	141
2000	34.7 °C4 March 2000	17.2 °C15 December 2000	24.4 °C	1,430 mm	130
1999	34.4 °C22 March 1999	18.3 °C12 January 1999	24.4 °C	1,641 mm	132
1998	35.5 °C10 March 1998	18.4 °C17 January 1998	25.4 °C	1,403 mm	194
1997	33.9 °C28 February 1997	16.7 °C2 February 1997	24.8 °C	1,534 mm	145
1996	33.9 °C30 April 1996	19.3 °C18 July 1996	24.4 °C	1,798 mm	120
1995	35.3 °C2 April 1995	19.6 °C27 January 1995	24.7 °C	1,883 mm	148
1994	34.0 °C23 March 1994	17.1 °C18 January 1994	24.6 °C	1,925 mm	137
1993	34.7 °C2 May 1993	15.3 °C11 February 1993	24.6 °C	1,775 mm	139
1992	36.7 °C22 February 1992	17.3 °C5 January 1992	24.4 °C	1,615 mm	132
1991	35.1 °C31 March 1991	17.2 °C26 December 1991	24.7 °C	1,605 mm	116
1990	33.9 °C1 March 1990	18.0 °C26 February 1990	24.7 °C	1,741 mm	135
1989	34.7 °C2 March 1989	14.5 °C25 January 1989	24.5 °C	1,400 mm	145
1988	35.3 °C27 February 1988	19.2 °C21 July 1988	24.5 °C	2,048 mm	126
1987	35.5 °C21 March 1987	18.5 °C2 January 1987	25.0 °C	1,808 mm	158
1986	33.6 °C2 May 1986	16.6 °C16 January 1986	24.4 °C	1,955 mm	123
1985	33.9 °C6 March 1985	18.3 °C19 February 1985	24.0 °C	1,911 mm	91
1984	34.5 °C19 March 1984	17.4 °C14 December 1984	24.2 °C	1,712 mm	110
1983	35.6 °C14 February 1983	15.8 °C29 January 1983	24.7 °C	1,651 mm	155
1982	34.0 °C21 April 1982	15.6 °C11 February 1982	24.2 °C	2,012 mm	107
1981	34.6 °C21 March 1981	17.9 °C14 February 1981	24.2 °C	1,986 mm	102
1980	34.0 °C9 March 1980	16.3 °C28 December 1980	24.2 °C	2,005 mm	99
1979	34.9 °C18 March 1979	19.4 °C4 July 1979	24.3 °C	1,793 mm	129
1978	33.9 °C6 March 1978	16.1 °C11 January 1978	24.2 °C	1,893 mm	99
1977	34.2 °C26 April 1977	16.4 °C28 December 1977	24.2 °C	1,790 mm	112
1976	32.6 °C5 May 1976	18.6 °C8 July 1976	23.8 °C	1,922 mm	71
1975	32.6 °C16 March 1975	17.1 °C12 December 1975	23.9 °C	1,770 mm	75
1974	33.0 °C19 March 1974	16.7 °C30 December 1974	23.7 °C	1,902 mm	61
1973	35.1 °C20 March 1973	19.2 °C2 August 1973	24.4 °C	2,034 mm	121
1972	34.8 °C22 December 1972	18.1 °C26 June 1972	24.2 °C	1,748 mm	107
1971	34.3 °C4 March 1971	14.7 °C25 December 1971	23.8 °C	1,911 mm	92
1970	33.9 °C25 March 1970	17.5 °C5 December 1970	24.2 °C	2,063 mm	115
1969	33.9 °C4 February 1969	17.7 °C29 January 1969	24.1 °C	2,219 mm	85
1968	33.0 °C4 April 1968	17.7 °C18 January 1968	24.0 °C	1,978 mm	77
1967	33.6 °C4 April 1967	17.5 °C24 July 1967	23.8 °C	2,516 mm	87
1966	33.5 °C19 March 1966	20.1 °C14 November 1966	24.6 °C	1,615 mm	123
1965	33.3 °C13 May 1965	19.8 °C5 July 1965	24.3 °C	1,598 mm	103
1964	33.3 °C19 January 1964	19.1 °C26 December 1964	24.6 °C	1,341 mm	125
1963	32.6 °C18 February 1963	19.5 °C21 November 1963	24.4 °C	1,506 mm	110
1962	34.0 °C20 January 1962	19.6 °C18 September 1962	24.2 °C	1,592 mm	79
1961	34.5 °C22 February 1961	19.0 °C31 July 1961	24.2 °C	1,544 mm	113
1960	33.2 °C3 February 1960	19.3 °C20 August 1960	24.4 °C	1,772 mm	130
1959	34.1 °C12 March 1959	19.2 °C22 September 1959	24.6 °C	1,479 mm	171
1958	35.0 °C24 February 1958	18.2 °C29 June 1958	24.7 °C	1,468 mm	148
1957	33.9 °C16 February 1957	16.2 °C12 January 1957	24.4 °C	1,507 mm	124
1956	34.2 °C21 August 1956	19.6 °C23 January 1956	24.1 °C	1,665 mm	85
1955	32.9 °C15 February 1955	20.0 °C3 August 1955	24.0 °C	1,726 mm	45
1954	32.3 °C13 August 1954	19.2 °C3 August 1954	24.1 °C	1,629 mm	64
1953	32.4 °C22 February 1953	18.4 °C22 December 1953	24.2 °C	1,834 mm	83
1952	32.3 °C3 April 1952	19.7 °C7 August 1952	24.2 °C	1,925 mm	74
1951	32.7 °C28 February 1951	19.9 °C16 July 1951	24.2 °C	1,728 mm	83
1950	36.6 °C1 September 1950	15.2 °C17 July 1950	24.9 °C	1,140 mm	197
1949	35.0 °C16 February 1949	20.2 °C13 December 1949	25.1 °C	1,012 mm	197
1948	32.8 °C21 March 1948	20.0 °C4 January 1948	24.0 °C	1,757 mm	43
1947	33.6 °C23 July 1947	19.5 °C12 July 1947	24.4 °C	1,541 mm	110
1946	34.9 °C23 February 1946	19.0 °C16 January 1946	24.4 °C	1,520 mm	118
1945	34.5 °C14 February 1945	18.7 °C4 February 1945	24.2 °C	1,494 mm	94
1944	34.7 °C1 March 1944	19.6 °C8 December 1944	24.6 °C	1,301 mm	148
1943	34.9 °C1 March 1943	18.9 °C7 July 1943	24.6 °C	1,333 mm	171
1942	32.8 °C6 February 1942	18.4 °C20 July 1942	24.1 °C	1,453 mm	87
1941	34.3 °C17 February 1941	19.9 °C7 October 1941	24.7 °C	1,190 mm	149
1940	33.5 °C4 August 1940	19.8 °C12 January 1940	24.1 °C	1,653 mm	70

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

30.8 °C

+1.4 °C

Hot days (≥ 30 °C)

240 d/yr

+99

Frost days (< 0 °C)

0 d/yr

Annual rainfall

1176 mm

-402 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	31.9 °C	+1.9 °C	19 mm	-55 mm
Feb	31.8 °C	+1.2 °C	28 mm	-67 mm
Mar	32.3 °C	+1.8 °C	66 mm	-89 mm
Apr	31.2 °C	+1.0 °C	172 mm	+22 mm
May	31.0 °C	+1.3 °C	84 mm	-47 mm
Jun	30.7 °C	+1.7 °C	58 mm	-46 mm
Jul	29.2 °C	+0.6 °C	88 mm	-4 mm
Aug	29.8 °C	+1.0 °C	60 mm	-67 mm
Sep	29.9 °C	+1.4 °C	233 mm	+55 mm
Oct	30.1 °C	+1.6 °C	200 mm	-5 mm
Nov	30.9 °C	+2.2 °C	116 mm	-60 mm
Dec	30.4 °C	+1.0 °C	53 mm	-40 mm

The year's extremes

Hottest day

36.0 °C

25 Mar 2025

Coldest day

18.9 °C

12 Jan 2025

Wettest day

30.0 mm

11 Apr 2025

Windiest day

15.8 km/h

13 Mar 2025

Strongest gust

34.6 km/h

13 Mar 2025

Hottest feels-like

42.4 °C

11 Mar 2025

Coldest feels-like

20.0 °C

13 Jan 2025

Sunniest day

12.0 h

21 Mar 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 Ouésso?

Ouésso has a tropical rainforest climate (Köppen Af). Over 1940-2025, the average annual temperature is 24.7 °C and it receives 1,578 mm of precipitation per year.

What is the hottest day ever recorded in Ouésso?

The hottest day measured in Ouésso between 1940 and 2025 was 29 March 2024, reaching 37.4 °C.

What is the coldest day in Ouésso?

The coldest day measured in Ouésso between 1940 and 2025 was 13 January 2015, at 14.0 °C.

Does it snow in Ouésso?

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

Has the climate of Ouésso warmed?

Yes: Ouésso warmed by +1.4 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Ouésso?

The wettest day measured in Ouésso between 1940 and 2025 was 19 September 2010, with 177 mm of rain in 24 hours.

What was the windiest day in Ouésso?

The windiest day measured in Ouésso between 1940 and 2025 was 5 April 1967, with winds reaching 19.3 km/h.

What is the warmest month in Ouésso?

The warmest month in Ouésso is February (25.4 °C on average); the coldest is September (24.0 °C).

How much does it rain in Ouésso?

Ouésso receives on average 1,578 mm of precipitation per year, spread over about 244 rainy days.

Is it sunny in Ouésso?

Ouésso gets on average 9.5 hours of sunshine per day, roughly 3,468 hours per year over 1940-2025.

Are there tropical nights in Ouésso?

Yes: Ouésso has on average 353 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Ouésso?

In Ouésso, between 1940 and 2025, the highest apparent temperature reached 43.7 °C on 28 February 2024, and the lowest was 12.6 °C on 18 July 1950.

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