Boumerdas climate — normals and trends

Q: What is the climate of Boumerdas?

Boumerdas has a hot-summer mediterranean climate (Köppen Csa). Over 1940-2025, the average annual temperature is 17.7 °C and it receives 678 mm of precipitation per year.

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

The hottest day measured in Boumerdas between 1940 and 2025 was 11 July 2023, reaching 44.2 °C.

Q: What is the coldest day in Boumerdas?

The coldest day measured in Boumerdas between 1940 and 2025 was 27 January 2005, at -0.8 °C.

Q: Does it snow in Boumerdas?

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

Q: Has the climate of Boumerdas warmed?

Yes: Boumerdas warmed by +2.3 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Boumerdas?

The wettest day measured in Boumerdas between 1940 and 2025 was 10 October 1984, with 76 mm of rain in 24 hours.

Q: What was the windiest day in Boumerdas?

The windiest day measured in Boumerdas between 1940 and 2025 was 14 January 1987, with winds reaching 52.2 km/h.

Q: What is the warmest month in Boumerdas?

The warmest month in Boumerdas is August (26.1 °C on average); the coldest is January (10.9 °C).

Q: How much does it rain in Boumerdas?

Boumerdas receives on average 678 mm of precipitation per year, spread over about 92 rainy days.

Q: Is it sunny in Boumerdas?

Boumerdas gets on average 10.7 hours of sunshine per day, roughly 3,905 hours per year over 1940-2025.

Boumerdas (Algeria) has a hot-summer mediterranean climate (Csa) under the Köppen-Geiger classification. Its mean annual temperature is 17.7 °C and it receives 678 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 August (26.1 °C on average) and the coldest is January (10.9 °C). Rainfall peaks in December.

Boumerdas averages 0 frost days, 51 hot days (≥ 30 °C) and 92 rainy days per year.

Boumerdas has warmed by +2.3 °C between 1940 and 2025, or +0.26 °C per decade. This trend is statistically significant.

The hottest day of the period reached 44.2 °C (on 11 July 2023) and the coldest -0.8 °C (on 27 January 2005).

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

BoumerdasBoumerdes Province

coords: 36.77°, 3.48°
period: 1940–2025 · 86 yrs

CsaHot-summer MediterraneanWarmest monthAugustColdest monthJanuaryWettest monthDecemberDriest monthJuly

Mean daily temperature

17.7°C

Average daily high

22.0°C

Average daily low

13.8°C

Annual rainfall

678mm

Sunshine / day

10.7h

Mean relative humidity

72%

Average peak wind

18.1km/h

Seasonal range

15.2°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

51 d/yr

Rainy days (≥ 1 mm)

92 d/yr

Annual snowfall

0.5 cm

Average feels-like high

21.8 °C

Average feels-like low

13.0 °C

Average peak gust

37.1 km/h

Tropical nights (≥ 20 °C)

64 d/yr

Solar radiation

17.9 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+2.3 °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

44.2 °C

11 July 2023

Coldest day

-0.8 °C

27 January 2005

Wettest day

76 mm

10 October 1984

Windiest day

52.2 km/h

14 January 1987

Strongest gust

112.0 km/h

10 January 1987

Hottest feels-like

45.8 °C

23 July 2023

Coldest feels-like

-4.9 °C

4 January 1945

Snowiest day

5.3 cm

5 February 2012

Sunniest day

14.0 h

5 June 1940

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	37.6 °C26 August 2025	6.5 °C6 February 2025	19.9 °C	611 mm	88	0
2024	38.6 °C7 August 2024	6.1 °C23 January 2024	20.0 °C	453 mm	82	0
2023	44.2 °C11 July 2023	4.2 °C24 January 2023	19.7 °C	568 mm	82	0
2022	39.4 °C14 August 2022	3.6 °C29 January 2022	19.8 °C	448 mm	102	0
2021	40.2 °C11 August 2021	5.5 °C17 January 2021	19.4 °C	545 mm	77	0
2020	37.8 °C28 July 2020	5.0 °C6 January 2020	19.2 °C	480 mm	66	0
2019	38.3 °C13 June 2019	4.4 °C8 January 2019	18.8 °C	584 mm	70	0
2018	36.6 °C18 July 2018	3.9 °C24 February 2018	18.5 °C	795 mm	71	0
2017	41.1 °C1 August 2017	4.7 °C10 February 2017	19.0 °C	577 mm	75	0
2016	35.5 °C5 September 2016	4.9 °C5 February 2016	18.9 °C	641 mm	52	0
2015	37.5 °C29 July 2015	3.2 °C10 February 2015	18.7 °C	520 mm	77	0
2014	37.5 °C18 July 2014	4.0 °C3 February 2014	19.0 °C	648 mm	72	0
2013	35.5 °C6 August 2013	2.2 °C27 February 2013	17.9 °C	938 mm	45	0
2012	38.5 °C26 July 2012	-0.2 °C5 February 2012	18.4 °C	758 mm	73	1
2011	37.3 °C18 August 2011	2.6 °C22 January 2011	18.6 °C	746 mm	59	0
2010	35.2 °C27 August 2010	2.7 °C17 December 2010	18.2 °C	734 mm	45	0
2009	38.5 °C22 July 2009	3.3 °C26 February 2009	18.4 °C	708 mm	73	0
2008	37.7 °C9 September 2008	3.2 °C28 January 2008	18.1 °C	681 mm	66	0
2007	39.4 °C29 August 2007	3.8 °C18 November 2007	18.0 °C	828 mm	47	0
2006	36.1 °C31 July 2006	3.8 °C15 January 2006	18.8 °C	530 mm	69	0
2005	36.6 °C10 August 2005	-0.8 °C27 January 2005	17.5 °C	576 mm	46	1
2004	40.3 °C24 August 2004	3.5 °C2 March 2004	18.0 °C	682 mm	72	0
2003	38.7 °C23 August 2003	4.0 °C31 January 2003	18.7 °C	847 mm	78	0
2002	39.0 °C2 August 2002	4.7 °C13 January 2002	18.5 °C	581 mm	42	0
2001	36.6 °C23 July 2001	3.9 °C13 February 2001	18.5 °C	555 mm	52	0
2000	39.9 °C20 August 2000	3.5 °C1 January 2000	18.3 °C	293 mm	60	0
1999	40.7 °C25 August 1999	1.3 °C2 February 1999	18.3 °C	640 mm	67	0
1998	39.0 °C1 September 1998	3.1 °C23 January 1998	17.9 °C	651 mm	62	0
1997	39.1 °C14 July 1997	4.6 °C15 December 1997	18.5 °C	500 mm	43	0
1996	38.5 °C25 July 1996	3.9 °C24 February 1996	17.7 °C	776 mm	35	0
1995	42.5 °C10 August 1995	4.0 °C1 April 1995	18.2 °C	520 mm	47	0
1994	39.0 °C13 August 1994	3.7 °C29 December 1994	18.5 °C	489 mm	72	0
1993	36.3 °C9 July 1993	3.1 °C9 January 1993	17.3 °C	515 mm	45	0
1992	36.4 °C26 August 1992	2.9 °C7 January 1992	17.1 °C	755 mm	40	0
1991	36.3 °C21 July 1991	1.9 °C15 January 1991	17.2 °C	534 mm	64	0
1990	36.6 °C9 September 1990	4.1 °C16 December 1990	18.4 °C	514 mm	73	0
1989	37.9 °C22 July 1989	3.2 °C14 February 1989	18.4 °C	405 mm	59	0
1988	40.7 °C2 August 1988	2.6 °C28 February 1988	18.0 °C	655 mm	61	0
1987	40.3 °C11 August 1987	1.3 °C19 February 1987	18.3 °C	574 mm	59	0
1986	39.5 °C23 July 1986	3.2 °C13 February 1986	17.7 °C	716 mm	57	0
1985	38.8 °C5 August 1985	1.1 °C10 January 1985	17.8 °C	693 mm	54	0
1984	39.1 °C9 July 1984	3.6 °C17 February 1984	17.0 °C	840 mm	34	0
1983	37.5 °C25 July 1983	2.2 °C12 February 1983	17.7 °C	342 mm	34	0
1982	37.7 °C6 July 1982	3.9 °C24 December 1982	17.6 °C	907 mm	42	0
1981	35.7 °C31 July 1981	2.6 °C13 January 1981	17.5 °C	530 mm	21	0
1980	39.9 °C2 August 1980	2.5 °C12 December 1980	16.9 °C	786 mm	39	0
1979	38.0 °C5 August 1979	4.6 °C3 January 1979	17.1 °C	872 mm	33	0
1978	35.5 °C18 July 1978	2.6 °C14 January 1978	16.9 °C	738 mm	30	0
1977	33.7 °C15 August 1977	2.6 °C31 March 1977	17.3 °C	457 mm	10	0
1976	35.5 °C15 August 1976	3.2 °C5 January 1976	16.6 °C	1,031 mm	26	0
1975	36.1 °C16 July 1975	2.7 °C24 January 1975	16.9 °C	831 mm	42	0
1974	34.9 °C14 July 1974	2.2 °C6 March 1974	16.8 °C	985 mm	28	0
1973	36.9 °C15 September 1973	3.1 °C1 March 1973	16.8 °C	965 mm	36	0
1972	37.8 °C13 August 1972	4.2 °C1 February 1972	16.7 °C	1,308 mm	13	0
1971	39.2 °C14 August 1971	0.2 °C3 January 1971	17.1 °C	910 mm	46	0
1970	35.3 °C7 August 1970	3.4 °C28 February 1970	17.3 °C	662 mm	36	0
1969	39.0 °C13 August 1969	2.4 °C7 February 1969	17.1 °C	1,206 mm	18	0
1968	39.1 °C10 July 1968	3.3 °C1 March 1968	17.6 °C	665 mm	36	0
1967	37.9 °C22 July 1967	2.9 °C16 March 1967	17.5 °C	773 mm	41	0
1966	35.1 °C5 July 1966	4.1 °C16 March 1966	17.3 °C	769 mm	22	0
1965	35.1 °C31 July 1965	2.1 °C21 February 1965	17.3 °C	708 mm	31	0
1964	35.0 °C21 August 1964	2.1 °C11 February 1964	17.2 °C	633 mm	37	0
1963	36.6 °C2 August 1963	1.5 °C30 January 1963	16.9 °C	757 mm	31	0
1962	34.0 °C11 September 1962	3.9 °C1 February 1962	17.0 °C	779 mm	33	0
1961	36.6 °C11 August 1961	3.6 °C11 February 1961	17.9 °C	443 mm	44	0
1960	36.5 °C27 August 1960	2.6 °C19 January 1960	17.3 °C	713 mm	28	0
1959	34.9 °C22 September 1959	2.7 °C18 January 1959	17.5 °C	712 mm	30	0
1958	39.3 °C28 August 1958	2.9 °C27 February 1958	17.6 °C	699 mm	44	0
1957	36.1 °C5 August 1957	1.2 °C18 January 1957	16.9 °C	931 mm	26	0
1956	39.6 °C20 August 1956	-0.6 °C6 February 1956	16.3 °C	656 mm	47	2
1955	37.3 °C2 July 1955	2.8 °C11 March 1955	17.6 °C	723 mm	47	0
1954	40.1 °C20 August 1954	1.3 °C5 February 1954	16.6 °C	757 mm	38	0
1953	35.3 °C25 July 1953	2.2 °C18 January 1953	16.8 °C	603 mm	36	0
1952	37.3 °C28 August 1952	2.8 °C21 February 1952	17.7 °C	661 mm	57	0
1951	36.4 °C6 August 1951	3.9 °C5 January 1951	17.0 °C	731 mm	48	0
1950	39.0 °C4 July 1950	2.7 °C30 December 1950	17.5 °C	658 mm	62	0
1949	35.9 °C4 September 1949	0.5 °C5 February 1949	17.2 °C	728 mm	54	0
1948	36.9 °C17 August 1948	4.1 °C7 March 1948	17.1 °C	513 mm	42	0
1947	37.2 °C20 August 1947	3.1 °C4 January 1947	18.2 °C	647 mm	81	0
1946	35.6 °C12 August 1946	3.6 °C6 January 1946	17.4 °C	763 mm	60	0
1945	38.8 °C8 September 1945	0.1 °C4 January 1945	17.9 °C	416 mm	76	0
1944	38.8 °C31 August 1944	1.7 °C3 February 1944	16.7 °C	563 mm	60	0
1943	35.9 °C10 September 1943	3.5 °C2 January 1943	17.1 °C	710 mm	53	0
1942	37.0 °C18 July 1942	1.2 °C20 February 1942	17.2 °C	687 mm	64	0
1941	37.6 °C25 August 1941	2.3 °C6 January 1941	16.8 °C	597 mm	52	0
1940	38.1 °C26 July 1940	0.9 °C19 January 1940	16.7 °C	671 mm	44	0

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

24.0 °C

+2.0 °C

Hot days (≥ 30 °C)

88 d/yr

+37

Frost days (< 0 °C)

0 d/yr

Annual rainfall

611 mm

-67 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	17.0 °C	+2.3 °C	141 mm	+46 mm
Feb	17.3 °C	+1.9 °C	56 mm	-26 mm
Mar	19.2 °C	+2.0 °C	52 mm	-25 mm
Apr	21.8 °C	+2.6 °C	61 mm	-9 mm
May	24.1 °C	+1.5 °C	65 mm	+19 mm
Jun	31.1 °C	+4.3 °C	0 mm	-13 mm
Jul	31.5 °C	+1.1 °C	5 mm	+2 mm
Aug	32.6 °C	+1.6 °C	0 mm	-7 mm
Sep	29.5 °C	+1.3 °C	59 mm	+26 mm
Oct	26.1 °C	+2.0 °C	26 mm	-41 mm
Nov	20.4 °C	+1.2 °C	74 mm	-12 mm
Dec	16.8 °C	+1.1 °C	74 mm	-28 mm

The year's extremes

Hottest day

37.6 °C

26 Aug 2025

Coldest day

6.5 °C

6 Feb 2025

Wettest day

51.1 mm

18 Jan 2025

Windiest day

36.0 km/h

21 Mar 2025

Strongest gust

70.2 km/h

16 Apr 2025

Hottest feels-like

40.6 °C

14 Jul 2025

Coldest feels-like

4.0 °C

6 Feb 2025

Sunniest day

14.0 h

5 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 Boumerdas?

Boumerdas has a hot-summer mediterranean climate (Köppen Csa). Over 1940-2025, the average annual temperature is 17.7 °C and it receives 678 mm of precipitation per year.

What is the hottest day ever recorded in Boumerdas?

The hottest day measured in Boumerdas between 1940 and 2025 was 11 July 2023, reaching 44.2 °C.

What is the coldest day in Boumerdas?

The coldest day measured in Boumerdas between 1940 and 2025 was 27 January 2005, at -0.8 °C.

Does it snow in Boumerdas?

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

Has the climate of Boumerdas warmed?

Yes: Boumerdas warmed by +2.3 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Boumerdas?

The wettest day measured in Boumerdas between 1940 and 2025 was 10 October 1984, with 76 mm of rain in 24 hours.

What was the windiest day in Boumerdas?

The windiest day measured in Boumerdas between 1940 and 2025 was 14 January 1987, with winds reaching 52.2 km/h.

What is the warmest month in Boumerdas?

The warmest month in Boumerdas is August (26.1 °C on average); the coldest is January (10.9 °C).

How much does it rain in Boumerdas?

Boumerdas receives on average 678 mm of precipitation per year, spread over about 92 rainy days.

Is it sunny in Boumerdas?

Boumerdas gets on average 10.7 hours of sunshine per day, roughly 3,905 hours per year over 1940-2025.

What is the biggest single-day snowfall in Boumerdas?

The heaviest 24-hour snowfall measured in Boumerdas between 1940 and 2025 was 5 February 2012, with 5.3 cm.

Are there tropical nights in Boumerdas?

Yes: Boumerdas has on average 64 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Boumerdas?

In Boumerdas, between 1940 and 2025, the highest apparent temperature reached 45.8 °C on 23 July 2023, and the lowest was -4.9 °C on 4 January 1945.

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