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Weather & Climate in L’Arbaa Naït Irathen, Algeria
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
L’Arbaa Naït Irathen enjoys a temperate climate with an average annual temperature of 61°F (16°C). Winters average 46°F in January while summers reach 77°F in July. The area gets 269 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 36.7 inches. The city sits at an elevation of 2,329 feet.
Temperature
46°F Jan (8°C)
77°F Jul (25°C)
| Annual Average | 60.6°F |
| 12% above US avg | |
| January Average | 46°F (8°C) |
| July Average | 77°F (25°C) |
| Sunny Days | 269 days/yr |
Geography
| Elevation | 2,329 ft (710 m) |
| Area | 17.5 sq mi (45.2 km²) |
| Population Density | 1,752/sq mi |
| Coordinates | 36.6311°N, 4.1986°W |
| Timezone | Africa/Algiers |
Precipitation & Snow
Air Quality
Earthquake History
595 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.8.
| May 21, 2003 | 25 km WNW of Dellys, Algeria | M6.8 | 62 km | 12 km |
| Mar 18, 2021 | 21 km NNE of Bejaïa, Algeria | M6.0 | 95 km | 8 km |
| May 27, 2003 | northern Algeria | M5.8 | 65 km | 8 km |
| Nov 10, 2000 | 5 km S of el hed, Algeria | M5.7 | 51 km | 10 km |
| May 21, 2003 | 10 km WNW of Dellys, Algeria | M5.7 | 51 km | 10 km |
| Sep 4, 1996 | 20 km NNW of ’Aïn Benian, Algeria | M5.5 | 124 km | 10 km |
| Aug 1, 2014 | 11 km NW of Aïn Taya, Algeria | M5.5 | 94 km | 10 km |
| May 28, 2016 | 16 km SSW of Lakhdaria, Algeria | M5.4 | 65 km | 11 km |
| May 14, 2010 | 10 km SW of Melouza, Algeria | M5.3 | 82 km | 2 km |
| Aug 18, 2000 | 13 km SE of Bordj Zemoura, Algeria | M5.2 | 84 km | 10 km |
| Mar 19, 2022 | 13 km NE of Bejaïa, Algeria | M5.2 | 91 km | 10 km |
| May 29, 2003 | 7 km ENE of Aïn Taya, Algeria | M5.2 | 78 km | 10 km |
| May 22, 2003 | 12 km N of Dellys, Algeria | M5.2 | 50 km | 10 km |
| Mar 20, 2006 | 23 km NW of BABOR - VILLE, Algeria | M5.2 | 101 km | 10 km |
| May 23, 2010 | 4 km WSW of Melouza, Algeria | M5.2 | 75 km | 1 km |
| May 21, 2003 | 22 km WNW of Dellys, Algeria | M5.1 | 62 km | 10 km |
| May 22, 2003 | 30 km NW of Dellys, Algeria | M5.1 | 71 km | 10 km |
| May 16, 2010 | 20 km W of Melouza, Algeria | M5.1 | 74 km | 10 km |
| May 26, 2013 | 8 km ESE of Bejaïa, Algeria | M5.0 | 88 km | 10 km |
| May 28, 2003 | 9 km N of Aïn Taya, Algeria | M5.0 | 87 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
7 tsunamis recorded within 500 km. Highest wave on record: 5.0 m (16 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1856 | SEA OF ALBORAN | Earthquake | 5.0 m | 8 | 143 km |
| 1365 | ALGIERS | Earthquake | 5.0 m | — | 109 km |
| 1856 | SEA OF ALBORAN | Earthquake | 3.8 m | 5 | 143 km |
| 2003 | N. ALGERIA | Earthquake | 3.0 m | 2,287 | 62 km |
| 2003 | ALGIERS | Earthquake | 0.1 m | 9 | 65 km |
| 2021 | N. ALGERIA | Earthquake | 0.1 m | — | 95 km |
| 1802 | HARBOUR OF ALGIERS | Earthquake | — | — | 117 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 46°F (8°C) | 6.1 in | Coldest, Wettest |
| February | 48°F (9°C) | 4.1 in | |
| March | 51°F (11°C) | 4.2 in | |
| April | 56°F (13°C) | 3.1 in | |
| May | 63°F (17°C) | 2.3 in | |
| June | 71°F (21°C) | 1.0 in | |
| July | 77°F (25°C) | 0.1 in | Driest |
| August | 79°F (26°C) | 0.3 in | Warmest |
| September | 73°F (23°C) | 1.6 in | |
| October | 63°F (17°C) | 2.9 in | |
| November | 54°F (12°C) | 5.1 in | |
| December | 47°F (9°C) | 6.0 in |
L’Arbaa Naït Irathen has a seasonal temperature swing of 33°F / from 46°F in January to 79°F in August. Total annual precipitation is 36.7 inches, with January being the wettest month (6.1") and July the driest (0.1").