Arerti climate — normals and trends

Q: What is the climate of Arerti?

Arerti has a hot desert climate (Köppen BWh). Over 1940-2025, the average annual temperature is 31.8 °C and it receives 131 mm of precipitation per year.

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

The hottest day measured in Arerti between 1940 and 2025 was 9 June 2024, reaching 46.7 °C.

Q: What is the coldest day in Arerti?

The coldest day measured in Arerti between 1940 and 2025 was 7 February 1993, at 15.9 °C.

Q: Does it snow in Arerti?

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

Q: Has the climate of Arerti warmed?

Yes: Arerti warmed by +2.5 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Arerti?

The wettest day measured in Arerti between 1940 and 2025 was 19 January 1955, with 168 mm of rain in 24 hours.

Q: What was the windiest day in Arerti?

The windiest day measured in Arerti between 1940 and 2025 was 25 June 1967, with winds reaching 52.5 km/h.

Q: What is the warmest month in Arerti?

The warmest month in Arerti is July (34.8 °C on average); the coldest is January (27.6 °C).

Q: How much does it rain in Arerti?

Arerti receives on average 131 mm of precipitation per year, spread over about 30 rainy days.

Q: Is it sunny in Arerti?

Arerti gets on average 10.8 hours of sunshine per day, roughly 3,942 hours per year over 1940-2025.

Arerti (Ethiopia) has a hot desert climate (BWh) under the Köppen-Geiger classification. Its mean annual temperature is 31.8 °C and it receives 131 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 (34.8 °C on average) and the coldest is January (27.6 °C). Rainfall peaks in August.

Arerti averages 0 frost days, 353 hot days (≥ 30 °C) and 30 rainy days per year.

Arerti has warmed by +2.5 °C between 1940 and 2025, or +0.29 °C per decade. This trend is statistically significant.

The hottest day of the period reached 46.7 °C (on 9 June 2024) and the coldest 15.9 °C (on 7 February 1993).

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

ArertiAfar Region

coords: 13.95°, 40.67°
period: 1940–2025 · 86 yrs

BWhHot desertWarmest monthJulyColdest monthJanuaryWettest monthAugustDriest monthDecember

Mean daily temperature

31.8°C

Average daily high

37.9°C

Average daily low

26.4°C

Annual rainfall

131mm

Sunshine / day

10.8h

Mean relative humidity

45%

Average peak wind

22.6km/h

Seasonal range

7.2°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

353 d/yr

Rainy days (≥ 1 mm)

30 d/yr

Annual snowfall

0.0 cm

Average feels-like high

38.3 °C

Average feels-like low

28.3 °C

Average peak gust

39.1 km/h

Tropical nights (≥ 20 °C)

363 d/yr

Solar radiation

21.4 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+2.5 °C

since 1940

+0.3 °C per decade · r² = 0.70 · 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

46.7 °C

9 June 2024

Coldest day

15.9 °C

7 February 1993

Wettest day

168 mm

19 January 1955

Windiest day

52.5 km/h

25 June 1967

Strongest gust

86.0 km/h

25 June 1967

Hottest feels-like

47.8 °C

14 May 2024

Coldest feels-like

15.0 °C

7 February 1993

Sunniest day

12.1 h

15 May 1956

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	45.2 °C9 June 2025	20.9 °C18 January 2025	32.8 °C	110 mm	361
2024	46.7 °C9 June 2024	21.4 °C22 December 2024	33.3 °C	77 mm	360
2023	45.8 °C29 July 2023	19.9 °C22 March 2023	33.5 °C	138 mm	365
2022	44.9 °C13 June 2022	19.4 °C7 February 2022	32.8 °C	46 mm	356
2021	45.0 °C14 August 2021	20.5 °C31 January 2021	32.7 °C	93 mm	357
2020	45.5 °C15 May 2020	18.7 °C27 January 2020	32.4 °C	98 mm	351
2019	45.4 °C27 June 2019	18.3 °C8 January 2019	33.0 °C	117 mm	364
2018	45.2 °C27 May 2018	18.3 °C16 January 2018	33.1 °C	70 mm	360
2017	46.4 °C3 July 2017	18.2 °C9 January 2017	33.2 °C	77 mm	360
2016	46.3 °C15 June 2016	18.2 °C29 January 2016	33.0 °C	154 mm	359
2015	45.8 °C17 August 2015	19.9 °C6 January 2015	33.0 °C	54 mm	354
2014	44.5 °C19 June 2014	19.8 °C23 December 2014	32.5 °C	64 mm	358
2013	44.3 °C10 July 2013	20.5 °C7 December 2013	32.6 °C	89 mm	359
2012	45.2 °C16 July 2012	17.8 °C25 January 2012	32.5 °C	34 mm	361
2011	44.4 °C10 July 2011	18.6 °C26 December 2011	31.8 °C	101 mm	351
2010	44.6 °C18 May 2010	19.0 °C20 December 2010	32.7 °C	75 mm	361
2009	44.9 °C27 June 2009	18.9 °C9 January 2009	32.7 °C	41 mm	363
2008	44.8 °C1 September 2008	17.5 °C6 January 2008	32.1 °C	61 mm	362
2007	45.2 °C11 May 2007	20.1 °C8 January 2007	32.2 °C	50 mm	358
2006	44.6 °C28 May 2006	20.1 °C4 January 2006	32.4 °C	80 mm	358
2005	44.5 °C15 July 2005	19.5 °C7 February 2005	32.5 °C	79 mm	358
2004	46.1 °C29 July 2004	19.2 °C8 February 2004	32.6 °C	110 mm	351
2003	45.9 °C7 July 2003	19.9 °C10 January 2003	32.7 °C	71 mm	360
2002	44.9 °C11 June 2002	20.2 °C22 January 2002	32.6 °C	60 mm	352
2001	44.8 °C4 June 2001	19.1 °C10 January 2001	32.5 °C	97 mm	357
2000	44.8 °C18 July 2000	19.1 °C7 February 2000	32.2 °C	65 mm	362
1999	45.3 °C9 August 1999	20.0 °C26 December 1999	32.4 °C	75 mm	361
1998	45.8 °C12 August 1998	18.5 °C14 January 1998	32.5 °C	103 mm	352
1997	45.4 °C22 June 1997	19.3 °C26 January 1997	32.3 °C	137 mm	355
1996	45.9 °C2 August 1996	20.0 °C12 February 1996	32.5 °C	134 mm	359
1995	45.3 °C27 June 1995	19.1 °C11 February 1995	32.5 °C	92 mm	355
1994	44.4 °C4 May 1994	20.1 °C5 January 1994	32.5 °C	45 mm	360
1993	45.1 °C21 August 1993	15.9 °C7 February 1993	32.2 °C	101 mm	340
1992	44.6 °C16 June 1992	17.6 °C12 February 1992	31.4 °C	64 mm	329
1991	44.6 °C26 June 1991	19.0 °C28 January 1991	32.4 °C	76 mm	355
1990	45.1 °C9 June 1990	18.7 °C27 February 1990	32.0 °C	63 mm	350
1989	44.1 °C20 July 1989	18.6 °C15 February 1989	31.7 °C	109 mm	342
1988	44.3 °C26 July 1988	20.4 °C24 November 1988	32.2 °C	103 mm	356
1987	46.0 °C27 July 1987	19.0 °C15 March 1987	32.3 °C	108 mm	362
1986	44.5 °C18 July 1986	19.8 °C4 March 1986	32.0 °C	131 mm	356
1985	44.7 °C26 August 1985	17.8 °C19 February 1985	31.9 °C	144 mm	360
1984	45.3 °C9 July 1984	20.1 °C8 December 1984	32.2 °C	94 mm	362
1983	44.5 °C16 June 1983	18.4 °C12 February 1983	31.8 °C	88 mm	337
1982	44.2 °C28 June 1982	19.8 °C10 February 1982	31.6 °C	182 mm	347
1981	45.0 °C29 June 1981	18.9 °C12 February 1981	32.2 °C	169 mm	361
1980	44.9 °C15 June 1980	20.6 °C10 December 1980	32.6 °C	42 mm	361
1979	45.1 °C26 June 1979	20.4 °C30 November 1979	32.5 °C	122 mm	358
1978	45.3 °C21 May 1978	21.0 °C26 January 1978	31.9 °C	97 mm	358
1977	44.5 °C26 August 1977	20.2 °C25 February 1977	31.4 °C	205 mm	337
1976	44.4 °C5 June 1976	20.4 °C27 February 1976	31.7 °C	133 mm	353
1975	44.1 °C17 June 1975	19.7 °C16 December 1975	31.3 °C	167 mm	354
1974	43.6 °C30 June 1974	19.1 °C19 January 1974	31.2 °C	270 mm	339
1973	44.1 °C9 June 1973	19.8 °C17 December 1973	32.0 °C	85 mm	358
1972	44.0 °C25 July 1972	19.5 °C6 February 1972	31.9 °C	121 mm	354
1971	44.7 °C31 May 1971	18.1 °C31 December 1971	31.1 °C	128 mm	335
1970	44.9 °C4 July 1970	19.2 °C23 December 1970	31.8 °C	85 mm	359
1969	45.2 °C18 June 1969	19.4 °C1 February 1969	32.3 °C	133 mm	350
1968	44.4 °C25 June 1968	18.9 °C4 February 1968	31.6 °C	129 mm	350
1967	43.9 °C16 July 1967	19.3 °C1 February 1967	30.9 °C	244 mm	360
1966	45.1 °C4 June 1966	19.1 °C14 December 1966	31.7 °C	47 mm	357
1965	44.8 °C10 August 1965	19.0 °C5 January 1965	31.2 °C	89 mm	361
1964	43.8 °C16 July 1964	19.3 °C29 December 1964	31.3 °C	66 mm	354
1963	45.5 °C22 August 1963	18.6 °C25 December 1963	32.2 °C	92 mm	360
1962	46.0 °C24 May 1962	19.6 °C16 January 1962	31.9 °C	97 mm	360
1961	44.7 °C3 May 1961	21.8 °C22 March 1961	31.6 °C	97 mm	360
1960	45.3 °C27 May 1960	20.1 °C18 January 1960	32.1 °C	109 mm	361
1959	45.6 °C22 April 1959	17.7 °C23 January 1959	31.4 °C	89 mm	345
1958	46.3 °C15 June 1958	20.2 °C16 February 1958	32.1 °C	77 mm	350
1957	44.6 °C23 June 1957	18.5 °C5 February 1957	31.4 °C	211 mm	343
1956	42.6 °C26 May 1956	19.7 °C24 January 1956	30.9 °C	159 mm	349
1955	43.0 °C25 June 1955	19.9 °C12 February 1955	31.3 °C	287 mm	343
1954	43.6 °C31 May 1954	20.1 °C4 January 1954	31.0 °C	162 mm	351
1953	43.2 °C16 June 1953	19.5 °C23 December 1953	29.9 °C	416 mm	340
1952	44.1 °C4 June 1952	20.4 °C4 January 1952	30.5 °C	324 mm	359
1951	43.8 °C4 June 1951	19.9 °C25 January 1951	30.4 °C	372 mm	334
1950	41.5 °C29 May 1950	19.4 °C18 January 1950	28.9 °C	558 mm	331
1949	43.8 °C29 June 1949	18.4 °C12 February 1949	30.1 °C	319 mm	316
1948	43.4 °C9 July 1948	19.0 °C11 March 1948	30.4 °C	287 mm	343
1947	42.7 °C7 July 1947	20.0 °C9 March 1947	30.5 °C	284 mm	334
1946	43.7 °C5 June 1946	17.7 °C14 January 1946	31.0 °C	131 mm	351
1945	43.5 °C31 May 1945	18.4 °C19 January 1945	31.0 °C	75 mm	347
1944	43.7 °C14 June 1944	19.5 °C11 January 1944	31.1 °C	111 mm	339
1943	41.8 °C21 May 1943	18.9 °C3 February 1943	29.8 °C	270 mm	338
1942	44.3 °C23 May 1942	19.8 °C24 January 1942	31.0 °C	187 mm	346
1941	44.6 °C6 June 1941	18.2 °C22 January 1941	31.3 °C	98 mm	363
1940	43.6 °C22 June 1940	18.5 °C4 March 1940	30.9 °C	177 mm	342

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

39.2 °C

+1.3 °C

Hot days (≥ 30 °C)

361 d/yr

Frost days (< 0 °C)

0 d/yr

Annual rainfall

110 mm

-21 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	34.7 °C	+1.5 °C	2 mm	-4 mm
Feb	36.4 °C	+2.2 °C	0 mm	-6 mm
Mar	38.4 °C	+1.8 °C	6 mm	-6 mm
Apr	41.1 °C	+2.2 °C	0 mm	-15 mm
May	42.3 °C	+1.6 °C	1 mm	-12 mm
Jun	43.0 °C	+1.0 °C	0 mm	-4 mm
Jul	43.3 °C	+2.3 °C	5 mm	-10 mm
Aug	38.9 °C	-1.5 °C	91 mm	+69 mm
Sep	41.5 °C	+1.7 °C	4 mm	-14 mm
Oct	39.3 °C	+1.1 °C	0 mm	-10 mm
Nov	36.9 °C	+0.6 °C	0 mm	-5 mm
Dec	33.9 °C	0.0 °C	1 mm	-3 mm

The year's extremes

Hottest day

45.2 °C

9 Jun 2025

Coldest day

20.9 °C

18 Jan 2025

Wettest day

19.9 mm

20 Aug 2025

Windiest day

39.6 km/h

4 Mar 2025

Strongest gust

65.5 km/h

18 Jul 2025

Hottest feels-like

46.5 °C

1 May 2025

Coldest feels-like

19.2 °C

6 Jan 2025

Sunniest day

12.1 h

11 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 Arerti?

Arerti has a hot desert climate (Köppen BWh). Over 1940-2025, the average annual temperature is 31.8 °C and it receives 131 mm of precipitation per year.

What is the hottest day ever recorded in Arerti?

The hottest day measured in Arerti between 1940 and 2025 was 9 June 2024, reaching 46.7 °C.

What is the coldest day in Arerti?

The coldest day measured in Arerti between 1940 and 2025 was 7 February 1993, at 15.9 °C.

Does it snow in Arerti?

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

Has the climate of Arerti warmed?

Yes: Arerti warmed by +2.5 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Arerti?

The wettest day measured in Arerti between 1940 and 2025 was 19 January 1955, with 168 mm of rain in 24 hours.

What was the windiest day in Arerti?

The windiest day measured in Arerti between 1940 and 2025 was 25 June 1967, with winds reaching 52.5 km/h.

What is the warmest month in Arerti?

The warmest month in Arerti is July (34.8 °C on average); the coldest is January (27.6 °C).

How much does it rain in Arerti?

Arerti receives on average 131 mm of precipitation per year, spread over about 30 rainy days.

Is it sunny in Arerti?

Arerti gets on average 10.8 hours of sunshine per day, roughly 3,942 hours per year over 1940-2025.

Are there tropical nights in Arerti?

Yes: Arerti has on average 363 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Arerti?

In Arerti, between 1940 and 2025, the highest apparent temperature reached 47.8 °C on 14 May 2024, and the lowest was 15.0 °C on 7 February 1993.

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