Aru climate — normals and trends

Q: What is the climate of Aru?

Aru has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 21.3 °C and it receives 1,670 mm of precipitation per year.

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

The hottest day measured in Aru between 1940 and 2025 was 21 February 2005, reaching 35.5 °C.

Q: What is the coldest day in Aru?

The coldest day measured in Aru between 1940 and 2025 was 6 February 1957, at 12.0 °C.

Q: Does it snow in Aru?

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

Q: Has the climate of Aru warmed?

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

Q: What is the wettest day in Aru?

The wettest day measured in Aru between 1940 and 2025 was 18 March 1967, with 88 mm of rain in 24 hours.

Q: What was the windiest day in Aru?

The windiest day measured in Aru between 1940 and 2025 was 10 March 1985, with winds reaching 27.8 km/h.

Q: What is the warmest month in Aru?

The warmest month in Aru is February (23.3 °C on average); the coldest is July (19.9 °C).

Q: How much does it rain in Aru?

Aru receives on average 1,670 mm of precipitation per year, spread over about 216 rainy days.

Q: Is it sunny in Aru?

Aru gets on average 10.6 hours of sunshine per day, roughly 3,869 hours per year over 1940-2025.

Aru (Democratic Republic of Congo) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 21.3 °C and it receives 1,670 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 (23.3 °C on average) and the coldest is July (19.9 °C). Rainfall peaks in August.

Aru averages 0 frost days, 31 hot days (≥ 30 °C) and 216 rainy days per year.

Aru has warmed by +2.1 °C between 1940 and 2025, or +0.24 °C per decade. This trend is statistically significant.

The hottest day of the period reached 35.5 °C (on 21 February 2005) and the coldest 12.0 °C (on 6 February 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

AruIturi

coords: 2.86°, 30.84°
period: 1940–2025 · 86 yrs

AwTropical savannaWarmest monthFebruaryColdest monthJulyWettest monthAugustDriest monthJanuary

Mean daily temperature

21.3°C

Average daily high

26.7°C

Average daily low

17.0°C

Annual rainfall

1,670mm

Sunshine / day

10.6h

Mean relative humidity

74%

Average peak wind

11.2km/h

Seasonal range

3.4°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

31 d/yr

Rainy days (≥ 1 mm)

216 d/yr

Annual snowfall

0.0 cm

Average feels-like high

28.7 °C

Average feels-like low

18.0 °C

Average peak gust

30.3 km/h

Tropical nights (≥ 20 °C)

11 d/yr

Solar radiation

19.5 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+2.1 °C

since 1940

+0.2 °C per decade · r² = 0.77 · 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

35.5 °C

21 February 2005

Coldest day

12.0 °C

6 February 1957

Wettest day

88 mm

18 March 1967

Windiest day

27.8 km/h

10 March 1985

Strongest gust

70.9 km/h

9 March 2010

Hottest feels-like

37.1 °C

25 February 2005

Coldest feels-like

9.6 °C

16 February 1958

Sunniest day

12.0 h

28 March 1940

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	35.1 °C6 March 2025	14.1 °C18 December 2025	22.5 °C	1,308 mm	63
2024	33.1 °C18 March 2024	15.6 °C6 September 2024	22.7 °C	1,547 mm	52
2023	33.1 °C13 February 2023	15.2 °C1 September 2023	22.4 °C	1,530 mm	32
2022	33.1 °C5 March 2022	15.2 °C20 June 2022	22.0 °C	1,292 mm	51
2021	32.8 °C1 March 2021	14.9 °C14 July 2021	22.4 °C	1,072 mm	56
2020	33.7 °C7 March 2020	15.2 °C18 August 2020	22.1 °C	1,595 mm	41
2019	35.2 °C23 March 2019	14.5 °C24 August 2019	22.3 °C	1,537 mm	73
2018	34.5 °C8 February 2018	14.9 °C24 June 2018	22.2 °C	1,346 mm	43
2017	34.0 °C11 February 2017	15.4 °C27 August 2017	22.5 °C	1,284 mm	91
2016	34.8 °C17 February 2016	15.4 °C25 July 2016	22.7 °C	1,217 mm	81
2015	35.3 °C17 March 2015	13.0 °C11 January 2015	22.4 °C	1,350 mm	77
2014	33.6 °C27 February 2014	15.5 °C20 September 2014	22.3 °C	1,314 mm	77
2013	33.4 °C24 January 2013	14.9 °C3 September 2013	21.8 °C	1,440 mm	43
2012	33.1 °C30 January 2012	14.6 °C24 August 2012	21.8 °C	1,600 mm	62
2011	33.8 °C1 March 2011	14.7 °C21 January 2011	21.8 °C	1,452 mm	54
2010	33.6 °C1 February 2010	15.0 °C26 September 2010	21.9 °C	1,624 mm	37
2009	32.2 °C17 January 2009	15.4 °C3 July 2009	22.1 °C	1,233 mm	42
2008	31.7 °C23 December 2008	14.5 °C27 July 2008	21.5 °C	1,480 mm	38
2007	33.2 °C7 March 2007	14.5 °C18 December 2007	21.8 °C	1,428 mm	42
2006	34.5 °C9 February 2006	14.8 °C21 August 2006	21.7 °C	1,548 mm	36
2005	35.5 °C21 February 2005	14.5 °C18 July 2005	22.2 °C	1,318 mm	80
2004	33.5 °C25 March 2004	14.5 °C10 September 2004	21.8 °C	1,397 mm	42
2003	34.1 °C19 February 2003	14.7 °C10 December 2003	21.7 °C	1,478 mm	51
2002	33.9 °C24 February 2002	14.1 °C28 December 2002	21.8 °C	1,347 mm	38
2001	33.4 °C28 February 2001	14.5 °C8 January 2001	21.5 °C	1,423 mm	27
2000	32.6 °C21 February 2000	14.9 °C28 July 2000	21.6 °C	1,300 mm	49
1999	34.3 °C7 February 1999	14.8 °C23 October 1999	21.4 °C	1,506 mm	40
1998	33.5 °C15 March 1998	15.1 °C28 September 1998	22.2 °C	1,462 mm	52
1997	34.1 °C22 March 1997	15.1 °C21 August 1997	21.9 °C	1,485 mm	49
1996	31.2 °C9 February 1996	13.8 °C8 August 1996	21.3 °C	1,680 mm	19
1995	33.0 °C3 February 1995	14.7 °C14 August 1995	21.7 °C	1,578 mm	32
1994	33.2 °C20 February 1994	14.1 °C1 September 1994	21.4 °C	1,818 mm	40
1993	32.5 °C20 February 1993	14.4 °C10 February 1993	21.4 °C	1,530 mm	13
1992	34.1 °C12 March 1992	13.7 °C5 January 1992	21.4 °C	1,740 mm	41
1991	32.3 °C18 March 1991	13.5 °C14 October 1991	21.3 °C	1,678 mm	21
1990	31.8 °C29 January 1990	13.5 °C1 October 1990	21.4 °C	1,570 mm	8
1989	33.0 °C3 March 1989	14.6 °C9 January 1989	21.2 °C	1,630 mm	20
1988	33.0 °C3 March 1988	13.9 °C15 December 1988	21.5 °C	1,721 mm	28
1987	33.2 °C3 February 1987	14.5 °C27 October 1987	21.8 °C	1,580 mm	37
1986	31.8 °C24 February 1986	14.3 °C7 September 1986	20.9 °C	1,743 mm	12
1985	33.7 °C14 March 1985	13.8 °C20 July 1985	20.9 °C	1,847 mm	36
1984	32.6 °C16 February 1984	12.4 °C19 August 1984	21.2 °C	1,343 mm	32
1983	32.9 °C13 February 1983	13.5 °C28 December 1983	21.7 °C	1,589 mm	44
1982	32.9 °C22 February 1982	14.2 °C16 February 1982	21.1 °C	1,629 mm	19
1981	32.3 °C7 February 1981	14.6 °C26 July 1981	21.2 °C	1,837 mm	26
1980	33.3 °C22 February 1980	14.5 °C12 December 1980	21.3 °C	1,603 mm	26
1979	31.3 °C23 March 1979	14.1 °C31 December 1979	21.2 °C	1,682 mm	7
1978	33.5 °C7 February 1978	14.2 °C5 August 1978	20.9 °C	1,920 mm	14
1977	32.0 °C16 February 1977	13.5 °C21 June 1977	20.9 °C	1,803 mm	10
1976	32.9 °C29 January 1976	13.3 °C10 July 1976	20.6 °C	2,266 mm	22
1975	32.1 °C22 February 1975	14.2 °C16 August 1975	20.6 °C	2,107 mm	20
1974	33.6 °C10 February 1974	14.0 °C29 June 1974	20.8 °C	2,089 mm	33
1973	32.7 °C4 February 1973	13.8 °C16 December 1973	21.3 °C	1,643 mm	56
1972	32.3 °C31 March 1972	14.0 °C2 September 1972	21.0 °C	1,831 mm	13
1971	33.9 °C6 March 1971	13.3 °C20 December 1971	20.8 °C	1,909 mm	39
1970	32.5 °C28 February 1970	13.6 °C14 September 1970	21.0 °C	1,820 mm	16
1969	30.5 °C10 February 1969	14.2 °C15 December 1969	21.1 °C	1,765 mm	9
1968	31.3 °C8 February 1968	13.1 °C4 April 1968	20.7 °C	1,680 mm	4
1967	32.2 °C2 March 1967	12.1 °C10 January 1967	20.6 °C	2,238 mm	19
1966	30.3 °C7 April 1966	14.0 °C10 December 1966	21.1 °C	1,586 mm	2
1965	30.1 °C16 May 1965	12.3 °C20 December 1965	20.6 °C	1,924 mm	2
1964	30.5 °C30 January 1964	13.5 °C15 August 1964	20.6 °C	1,732 mm	3
1963	29.8 °C24 March 1963	13.2 °C9 September 1963	20.2 °C	2,102 mm	0
1962	31.6 °C15 February 1962	13.4 °C4 August 1962	20.2 °C	2,398 mm	14
1961	33.8 °C8 March 1961	13.4 °C29 December 1961	20.7 °C	2,221 mm	24
1960	30.8 °C10 February 1960	13.5 °C30 August 1960	20.8 °C	2,177 mm	8
1959	33.5 °C15 March 1959	13.2 °C15 July 1959	21.1 °C	1,930 mm	31
1958	33.1 °C27 February 1958	12.2 °C16 February 1958	21.1 °C	2,042 mm	32
1957	31.6 °C17 February 1957	12.0 °C6 February 1957	20.7 °C	1,854 mm	8
1956	31.5 °C1 March 1956	13.5 °C18 January 1956	20.4 °C	1,921 mm	23
1955	30.7 °C15 February 1955	14.0 °C20 August 1955	20.3 °C	1,875 mm	1
1954	31.6 °C27 January 1954	13.6 °C17 July 1954	20.3 °C	1,865 mm	8
1953	30.4 °C15 February 1953	13.2 °C24 July 1953	20.0 °C	2,503 mm	2
1952	31.0 °C23 January 1952	14.0 °C11 September 1952	20.4 °C	2,313 mm	9
1951	30.6 °C1 March 1951	13.3 °C13 July 1951	20.4 °C	2,122 mm	5
1950	32.0 °C2 March 1950	12.7 °C11 August 1950	20.1 °C	1,883 mm	13
1949	30.2 °C4 March 1949	13.4 °C31 July 1949	20.3 °C	1,937 mm	2
1948	30.3 °C18 January 1948	13.8 °C13 August 1948	20.4 °C	1,965 mm	1
1947	29.9 °C2 January 1947	12.8 °C4 December 1947	20.4 °C	1,666 mm	0
1946	33.9 °C13 February 1946	13.7 °C7 June 1946	21.0 °C	1,661 mm	69
1945	32.9 °C22 February 1945	13.4 °C9 December 1945	20.7 °C	1,380 mm	14
1944	33.3 °C3 March 1944	13.9 °C6 July 1944	21.4 °C	1,180 mm	51
1943	33.3 °C18 February 1943	13.7 °C19 July 1943	21.1 °C	1,297 mm	69
1942	33.2 °C9 February 1942	12.8 °C17 July 1942	20.8 °C	1,311 mm	32
1941	33.7 °C8 February 1941	13.2 °C26 November 1941	21.2 °C	1,252 mm	43
1940	30.3 °C22 January 1940	12.7 °C29 November 1940	20.1 °C	1,702 mm	1

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

27.9 °C

+1.2 °C

Hot days (≥ 30 °C)

63 d/yr

+32

Frost days (< 0 °C)

0 d/yr

Annual rainfall

1308 mm

-362 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	30.0 °C	+1.3 °C	0 mm	-25 mm
Feb	32.3 °C	+3.0 °C	1 mm	-49 mm
Mar	29.9 °C	+1.5 °C	72 mm	-58 mm
Apr	27.8 °C	+0.7 °C	101 mm	-65 mm
May	27.6 °C	+1.1 °C	112 mm	-57 mm
Jun	27.2 °C	+1.4 °C	97 mm	-59 mm
Jul	25.9 °C	+0.9 °C	215 mm	+38 mm
Aug	25.4 °C	+0.3 °C	280 mm	+73 mm
Sep	26.9 °C	+1.3 °C	163 mm	-24 mm
Oct	26.5 °C	+0.9 °C	194 mm	-13 mm
Nov	27.9 °C	+2.0 °C	59 mm	-88 mm
Dec	28.0 °C	+1.0 °C	14 mm	-35 mm

The year's extremes

Hottest day

35.1 °C

6 Mar 2025

Coldest day

14.1 °C

18 Dec 2025

Wettest day

28.0 mm

14 Jul 2025

Windiest day

21.2 km/h

22 Nov 2025

Strongest gust

52.9 km/h

24 Apr 2025

Hottest feels-like

35.6 °C

11 Apr 2025

Coldest feels-like

12.8 °C

23 Nov 2025

Sunniest day

12.0 h

24 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 Aru?

Aru has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 21.3 °C and it receives 1,670 mm of precipitation per year.

What is the hottest day ever recorded in Aru?

The hottest day measured in Aru between 1940 and 2025 was 21 February 2005, reaching 35.5 °C.

What is the coldest day in Aru?

The coldest day measured in Aru between 1940 and 2025 was 6 February 1957, at 12.0 °C.

Does it snow in Aru?

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

Has the climate of Aru warmed?

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

What is the wettest day in Aru?

The wettest day measured in Aru between 1940 and 2025 was 18 March 1967, with 88 mm of rain in 24 hours.

What was the windiest day in Aru?

The windiest day measured in Aru between 1940 and 2025 was 10 March 1985, with winds reaching 27.8 km/h.

What is the warmest month in Aru?

The warmest month in Aru is February (23.3 °C on average); the coldest is July (19.9 °C).

How much does it rain in Aru?

Aru receives on average 1,670 mm of precipitation per year, spread over about 216 rainy days.

Is it sunny in Aru?

Aru gets on average 10.6 hours of sunshine per day, roughly 3,869 hours per year over 1940-2025.

Are there tropical nights in Aru?

Yes: Aru has on average 11 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Aru?

In Aru, between 1940 and 2025, the highest apparent temperature reached 37.1 °C on 25 February 2005, and the lowest was 9.6 °C on 16 February 1958.

Compare Aru with another city

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