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Weather & Climate in Aïn Defla, Algeria
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
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, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 22.3 inches (drier than the 38-inch national average). The city sits at an elevation of 866 feet.
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
Air Quality
Earthquake History
268 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.5.
| Sep 4, 1996 | 20 km NNW of ’Aïn Benian, Algeria | M5.5 | 114 km | 10 km |
| Aug 1, 2014 | 11 km NW of Aïn Taya, Algeria | M5.5 | 127 km | 10 km |
| May 28, 2016 | 16 km SSW of Lakhdaria, Algeria | M5.4 | 140 km | 11 km |
| May 29, 2003 | 7 km ENE of Aïn Taya, Algeria | M5.2 | 139 km | 10 km |
| Feb 9, 1990 | 20 km N of Tipasa, Algeria | M5.2 | 73 km | 12 km |
| Jul 20, 2005 | 68 km NW of Abou el Hassan, Algeria | M5.0 | 134 km | 10 km |
| May 28, 2003 | 9 km N of Aïn Taya, Algeria | M5.0 | 135 km | 10 km |
| Jan 17, 2009 | 10 km NNW of El Abadia, Algeria | M4.8 | 32 km | 10 km |
| Apr 10, 2016 | 17 km WNW of Aïn Bessem, Algeria | M4.8 | 139 km | 15 km |
| Jan 1, 2003 | 0 km S of Berrouaghia, Algeria | M4.8 | 86 km | 10 km |
| Mar 18, 2025 | 19 km SW of Lakhdaria, Algeria | M4.8 | 133 km | 10 km |
| May 31, 2016 | northern Algeria | M4.8 | 140 km | 13 km |
| Jul 17, 2013 | 0 km SSE of Bougara, Algeria | M4.8 | 105 km | 10 km |
| Feb 10, 2016 | 1 km SSE of Bougara, Algeria | M4.7 | 104 km | 11 km |
| Feb 1, 2015 | 5 km SSE of Bouinan, Algeria | M4.7 | 97 km | 19 km |
| Jul 14, 1997 | 9 km NNE of Ammi Moussa, Algeria | M4.7 | 80 km | 10 km |
| May 16, 2016 | 18 km WNW of Aïn Bessem, Algeria | M4.7 | 135 km | 13 km |
| Jan 19, 1992 | 8 km E of El Abadia, Algeria | M4.7 | 17 km | 12 km |
| Apr 12, 1990 | 20 km NNE of Tipasa, Algeria | M4.7 | 73 km | 14 km |
| Jan 2, 2018 | 11 km SW of El Affroun, Algeria | M4.7 | 54 km | 8 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
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.
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").