Aïn Defla, Algeria

Full City Profile

55,259 Population 215/sq mi density

866 ft Elevation 264 meters

64°F Avg Temperature 18°C

Aïn Defla enjoys a temperate climate with an average annual temperature of 64°F (18°C). Winters average 49°F in January while summers reach 83°F in July. The area gets 296 sunny days per year. Annual precipitation totals 22.3 inches. The area receives 0.0 inches of snow annually.

Temperature

49°F Jan (10°C) 83°F Jul (28°C)

Annual Average	64.4°F
	19% above US avg
January Average	49°F (10°C)
July Average	83°F (28°C)
Sunny Days	296 days/yr

Geography

Elevation	866 ft (264 m)
Area	256.8 sq mi (665.1 km²)
Population Density	215/sq mi
Coordinates	36.2641°N, 1.9679°W
Timezone	Africa/Algiers

Precipitation & Snow

Annual Rainfall 22.3"

41% below US avg

Snowfall 0.0"

Wettest Month (Dec) 3.50"

Driest Month (Jul) 0.08"

Air Quality

Earthquake History

268 earthquakes (M2.5+) within 150 km since 1990. Strongest: M5.5. Most recent: M4.8 on Mar 18, 2025.

Sep 4, 1996	20 km NNW of ’Aïn Benian, Algeria	M5.5	114 km
Aug 1, 2014	11 km NW of Aïn Taya, Algeria	M5.5	127 km
May 28, 2016	16 km SSW of Lakhdaria, Algeria	M5.4	140 km
May 29, 2003	7 km ENE of Aïn Taya, Algeria	M5.2	139 km
Feb 9, 1990	20 km N of Tipasa, Algeria	M5.2	73 km
Jul 20, 2005	68 km NW of Abou el Hassan, Algeria	M5.0	134 km
May 28, 2003	9 km N of Aïn Taya, Algeria	M5.0	135 km
Jan 17, 2009	10 km NNW of El Abadia, Algeria	M4.8	32 km
Apr 10, 2016	17 km WNW of Aïn Bessem, Algeria	M4.8	139 km
Jan 1, 2003	0 km S of Berrouaghia, Algeria	M4.8	86 km
Mar 18, 2025	19 km SW of Lakhdaria, Algeria	M4.8	133 km
May 31, 2016	northern Algeria	M4.8	140 km
Jul 17, 2013	0 km SSE of Bougara, Algeria	M4.8	105 km
Feb 10, 2016	1 km SSE of Bougara, Algeria	M4.7	104 km
Feb 1, 2015	5 km SSE of Bouinan, Algeria	M4.7	97 km
Jul 14, 1997	9 km NNE of Ammi Moussa, Algeria	M4.7	80 km
May 16, 2016	18 km WNW of Aïn Bessem, Algeria	M4.7	135 km
Jan 19, 1992	8 km E of El Abadia, Algeria	M4.7	17 km
Apr 12, 1990	20 km NNE of Tipasa, Algeria	M4.7	73 km
Jan 2, 2018	11 km SW of El Affroun, Algeria	M4.7	54 km

Source: USGS (M2.5+, 1990–2025)

Tsunami History

5 tsunamis recorded within 500 km. Highest wave on record: 5.0 m (16 ft).

Year	Location	Cause	Max Wave	Deaths	Distance
1365	ALGIERS	Earthquake	5.0 m	—	110 km
1980	EL ASNAM	Eruption + Earthquake	0.7 m	5,000	54 km
1954	SEA OF ALBORAN	Eruption + Earthquake	0.3 m	1,243	34 km
1891	SEA OF ALBORAN	Earthquake	—	36	30 km
1802	HARBOUR OF ALGIERS	Earthquake	—	—	88 km

Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	49°F (10°C)	3.0 in	Coldest
February	51°F (11°C)	2.9 in
March	55°F (13°C)	2.5 in
April	59°F (15°C)	1.8 in
May	66°F (19°C)	1.7 in
June	76°F (24°C)	0.5 in
July	83°F (28°C)	0.1 in	Driest
August	83°F (28°C)	0.2 in	Warmest
September	76°F (24°C)	1.0 in
October	66°F (19°C)	2.1 in
November	57°F (14°C)	3.1 in
December	51°F (11°C)	3.5 in	Wettest

Aïn Defla has a seasonal temperature swing of 34°F / from 49°F in January to 83°F in August. Total annual precipitation is 22.3 inches, with December being the wettest month (3.5") and July the driest (0.1").

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