Editing Geography of Algeria (section)

==Climate and hydrology==
[[File:Iazzuggen.JPG|thumb|[[Kabylie]]'s hills near [[Azazga]]|300px]]
[[File:Tahat matin.jpg|thumb|[[Mount Tahat]] of the [[Ahaggar Mountains]], most elevated point in [[Algeria]] at 3,003 m (9,852 ft)|300px]]
[[File:Water_Stress,_Top_Countries_(2020).svg|thumb|Algeria  is the ninth most water stressed country in the world.]]
Northern Algeria is in the temperate zone and enjoys a mild, Mediterranean climate.<ref name=":1">{{cite encyclopedia|title=Algeria: a country study|publisher=[[Federal Research Division]], [[Library of Congress]]|location=Washington, D.C.|url=https://www.loc.gov/item/94043019/|last=Deeb|first=Mary-Jane|date=1993|editor-last=Metz|editor-first=Helen Chapin|pages=74–75|language=English|isbn=|oclc=44230753|postscript=. {{PD-notice}}|entry=Climate and Hydrology}}</ref> It lies within approximately the same latitudes as southern California and has somewhat similar climatic conditions.<ref name=":1" /> Its broken topography, however, provides sharp local contrasts in both prevailing temperatures and incidence of rainfall.<ref name=":1" /> Year-to-year variations in climatic conditions are also common.<ref name=":1" /> This area, the most inhabited in Algeria, is commonly referred to as the Tell.

In the Tell, temperatures in summer average between {{convert|30|and|43|°C|°F}} and in winter drop to {{convert|10|to|12|°C|°F}}.<ref name=":1" /> Winters are not cold, but the humidity is high and houses are seldom adequately heated.<ref name=":1" /> In eastern Algeria, the average temperatures are somewhat lower, and on the steppes of the High Plateaus winter temperatures hover only a few degrees above freezing.<ref name=":1" /> A prominent feature of the climate in this region is the [[sirocco]], a dusty, choking south wind blowing off the desert, sometimes at gale force.<ref name=":1" /> This wind also occasionally reaches into the coastal Tell.<ref name=":1" />

In Algeria only a relatively small corner of the [[Sahara]] lies across the [[Tropic of Cancer]] in the torrid zone, but even in winter, midday desert temperatures can be very hot.<ref name=":1" /> After sunset, however, the clear, dry air permits rapid loss of heat, and the nights are cool to chilly.<ref name=":1" /> Enormous daily ranges in temperature are recorded.<ref name=":1" />

Rainfall is fairly abundant along the coastal part of the Tell, ranging from {{convert|400|to|670|mm|in|1|abbr=on}} annually, the amount of precipitation increasing from west to east.<ref name=":1" /> Precipitation is heaviest in the northern part of eastern Algeria, where it reaches as much as {{convert|1000|mm|in|1|abbr=on}} in some years.<ref name=":1" /> Farther inland the rainfall is less plentiful.<ref name=":1" /> [[Prevailing winds]] that are easterly and northeasterly in summer change to westerly and northerly in winter and carry with them a general increase in precipitation from September to December, a decrease in the late winter and spring months, and a near absence of rainfall during the summer months.<ref name=":1" />

{{Weather box
|width = auto
|location = Algiers ([[Houari Boumediene Airport]] ) 1976–2005 averages, extremes 1838–present
|metric first = yes
|single line = yes
|Jan record high C = 27.6
|Feb record high C = 31.4
|Mar record high C = 36.3
|Apr record high C = 36.5
|May record high C = 41.1
|Jun record high C = 44.6
|Jul record high C = 45.2
|Aug record high C = 47.5
|Sep record high C = 44.4
|Oct record high C = 39.5
|Nov record high C = 34.4
|Dec record high C = 30.4
|year record high C = 47.5
|Jan high C = 16.7
|Feb high C = 17.4
|Mar high C = 19.3
|Apr high C = 20.9
|May high C = 23.9
|Jun high C = 28.2
|Jul high C = 31.2
|Aug high C = 32.2
|Sep high C = 29.6
|Oct high C = 25.9
|Nov high C = 20.8
|Dec high C = 17.9
|year high C = 23.7
|Jan mean C = 11.1
|Feb mean C = 11.7
|Mar mean C = 13.2
|Apr mean C = 14.9
|May mean C = 18.1
|Jun mean C = 22.2
|Jul mean C = 25.1
|Aug mean C = 26.0
|Sep mean C = 23.6
|Oct mean C = 20.1
|Nov mean C = 15.3
|Dec mean C = 12.6
|year mean C = 17.8
|Jan low C = 5.5
|Feb low C = 5.9
|Mar low C = 7.1
|Apr low C = 8.8
|May low C = 12.3
|Jun low C = 16.1
|Jul low C = 18.9
|Aug low C = 19.8
|Sep low C = 17.6
|Oct low C = 14.2
|Nov low C = 9.8
|Dec low C = 7.2
|year low C = 11.9
|Jan record low C = -3.3
|Feb record low C = -1.9
|Mar record low C = -1.0
|Apr record low C = -0.8
|May record low C = 2.6
|Jun record low C = 5.5
|Jul record low C = 9.0
|Aug record low C = 9.5
|Sep record low C = 8.2
|Oct record low C = 4.1
|Nov record low C = -0.1
|Dec record low C = -2.3
|year record low C = -3.3
|precipitation colour = green
|Jan precipitation mm = 81.4
|Feb precipitation mm = 72.7
|Mar precipitation mm = 55.0
|Apr precipitation mm = 58.4
|May precipitation mm = 41.9
|Jun precipitation mm = 8.5
|Jul precipitation mm = 4.5
|Aug precipitation mm = 8.2
|Sep precipitation mm = 28.3
|Oct precipitation mm = 58.8
|Nov precipitation mm = 89.6
|Dec precipitation mm = 91.0
|year precipitation mm = 598.3
|unit precipitation days = 0.1 mm
|Jan precipitation days = 11.4
|Feb precipitation days = 10.6
|Mar precipitation days = 9.7
|Apr precipitation days = 9.1
|May precipitation days = 7.3
|Jun precipitation days = 2.5
|Jul precipitation days = 1.5
|Aug precipitation days = 2.5
|Sep precipitation days = 5.3
|Oct precipitation days = 8.6
|Nov precipitation days = 11.1
|Dec precipitation days = 12.1
|year precipitation days = 91.7
|Jan humidity = 71
|Feb humidity = 66
|Mar humidity = 65
|Apr humidity = 62
|May humidity = 66
|Jun humidity = 66
|Jul humidity = 67
|Aug humidity = 65
|Sep humidity = 68
|Oct humidity = 66
|Nov humidity = 68
|Dec humidity = 68
|year humidity = 67
|Jan sun = 139.5
|Feb sun = 158.2
|Mar sun = 207.7
|Apr sun = 228.0
|May sun = 300.7
|Jun sun = 300.0
|Jul sun = 353.4
|Aug sun = 325.5
|Sep sun = 267.0
|Oct sun = 198.4
|Nov sun = 153.0
|Dec sun = 145.7
|year sun = 2777.1
|Jand sun = 4.5
|Febd sun = 5.6
|Mard sun = 6.7
|Aprd sun = 7.6
|Mayd sun = 9.7
|Jund sun = 10.0
|Juld sun = 11.4
|Augd sun = 10.5
|Sepd sun = 8.9
|Octd sun = 6.4
|Novd sun = 5.1
|Decd sun = 4.7
|yeard sun = 7.6
|source 1 = [[World Meteorological Organization]] (average temperatures and precipitation, 1976–2005)<ref>{{cite web
| url = http://worldweather.wmo.int/en/city.html?cityId=242
| title = World Weather Information Service–Algiers
| publisher = World Meteorological Organization
| access-date = 16 October 2016
| archive-url = https://web.archive.org/web/20161018205356/http://worldweather.wmo.int/en/city.html?cityId=242
| archive-date = 18 October 2016
| url-status = live
}}</ref>
|source 2 = Arab Meteorology Book (humidity and sun),<ref name=climate>{{cite web
| url = http://extras.springer.com/2007/978-1-4020-4577-6/Book_Shahin_ISBN_9781402045776_Appendix.pdf
| title = Appendix I: Meteorological Data
| publisher = Springer
| access-date = 16 October 2016
| archive-url = https://web.archive.org/web/20160304072830/http://extras.springer.com/2007/978-1-4020-4577-6/Book_Shahin_ISBN_9781402045776_Appendix.pdf
| archive-date = 4 March 2016
| url-status = live
}}</ref> Meteo Climat (record highs and lows)<ref name = meteoclimat>
{{cite web
| url = http://meteo-climat-bzh.dyndns.org/index.php?page=stati&id=15
| title = Station Alger
| publisher = Meteo Climat
|language = fr
| access-date = 16 October 2016}}</ref>
|date=January 2011}}


{{Weather box
|width = auto
|location = Adrar
|metric first = yes
|single line = yes

|Jan record high C = 31.2
|Feb record high C = 36.0
|Mar record high C = 40.7
|Apr record high C = 43.8
|May record high C = 49.8
|Jun record high C = 48.9
|Jul record high C = 51.0
|Aug record high C = 49.8
|Sep record high C = 46.8
|Oct record high C = 43.5
|Nov record high C = 36.0
|Dec record high C = 31.8
|year record high C = 51.0

|Jan high C = 20.6
|Feb high C = 24.5
|Mar high C = 28.0
|Apr high C = 32.1
|May high C = 36.7
|Jun high C = 42.5
|Jul high C = 45.0
|Aug high C = 44.3
|Sep high C = 40.0
|Oct high C = 33.1
|Nov high C = 26.1
|Dec high C = 20.9
|year high C = 32.8

|Jan mean C = 12.4
|Feb mean C = 16.0
|Mar mean C = 19.4
|Apr mean C = 23.6
|May mean C = 28.1
|Jun mean C = 33.6
|Jul mean C = 36.0
|Aug mean C = 35.4
|Sep mean C = 31.6
|Oct mean C = 25.0
|Nov mean C = 18.2
|Dec mean C = 12.9
|year mean C = 24.3

|Jan low C =  4.1
|Feb low C =  7.5
|Mar low C = 10.7
|Apr low C = 15.1
|May low C = 19.4
|Jun low C = 24.7
|Jul low C = 26.9
|Aug low C = 26.6
|Sep low C = 23.2
|Oct low C = 16.8
|Nov low C = 10.2
|Dec low C =  4.9
|year low C = 15.8

|Jan record low C = -4.2
|Feb record low C = -2.0
|Mar record low C = 0.5
|Apr record low C = 4.8
|May record low C = 8.9
|Jun record low C = 15.2
|Jul record low C = 18.2
|Aug record low C = 20.0
|Sep record low C = 15.2
|Oct record low C = 6.0
|Nov record low C = -1.5
|Dec record low C = -4.1
|year record low C = -4.2

|precipitation colour = green
|Jan precipitation mm = 2.3
|Feb precipitation mm = 1.3
|Mar precipitation mm = 2.6
|Apr precipitation mm = 4.1
|May precipitation mm = 0.3
|Jun precipitation mm = 0.1
|Jul precipitation mm = 0.0
|Aug precipitation mm = 0.2
|Sep precipitation mm = 0.2
|Oct precipitation mm = 1.5
|Nov precipitation mm = 0.6
|Dec precipitation mm = 1.4
|year precipitation mm = 14.6

|unit precipitation days = 0.1 mm
|Jan precipitation days = 0.4
|Feb precipitation days = 0.4
|Mar precipitation days = 0.2
|Apr precipitation days = 0.2
|May precipitation days = 0.1
|Jun precipitation days = 0.0
|Jul precipitation days = 0.0
|Aug precipitation days = 0.3
|Sep precipitation days = 0.2
|Oct precipitation days = 0.4
|Nov precipitation days = 0.7
|Dec precipitation days = 0.7
|year precipitation days = 3.6

|Jan humidity = 52
|Feb humidity = 52
|Mar humidity = 40
|Apr humidity = 34
|May humidity = 30
|Jun humidity = 28
|Jul humidity = 26
|Aug humidity = 29
|Sep humidity = 36
|Oct humidity = 48
|Nov humidity = 59
|Dec humidity = 57
|year humidity = 42

|Jan sun = 269.7
|Feb sun = 257.1
|Mar sun = 310.0
|Apr sun = 318.0
|May sun = 325.5
|Jun sun = 333.0
|Jul sun = 344.1
|Aug sun = 328.6
|Sep sun = 288.0
|Oct sun = 279.0
|Nov sun = 261.0
|Dec sun = 263.5
|year sun = 3577.5

|Jand sun =  8.7
|Febd sun =  9.1
|Mard sun = 10.0
|Aprd sun = 10.6
|Mayd sun = 10.5
|Jund sun = 11.1
|Juld sun = 11.1
|Augd sun = 10.6
|Sepd sun =  9.6
|Octd sun =  9.0
|Novd sun =  8.7
|Decd sun =  8.5
|yeard sun = 9.8

|source 1 = NOAA<ref name = NOAA>{{cite web
| url = ftp://ftp.atdd.noaa.gov/pub/GCOS/WMO-Normals/TABLES/REG__I/AL/60620.TXT
| title = Adrar Climate Normals 1961–1990
| publisher = [[National Oceanic and Atmospheric Administration]]
| access-date = 21 October 2016}}</ref>

|source 2 = [[Deutscher Wetterdienst]] (extremes, humidity and sun)<ref name = DWD>{{cite web
| url = http://www.dwd.de/DWD/klima/beratung/ak/ak_606200_kt.pdf
| title = Klimatafel von Adrar / Algerien
| work = Baseline climate means (1961-1990) from stations all over the world
| publisher = Deutscher Wetterdienst
| language = de
| access-date = 21 October 2016}}</ref>
|date = June 2013}}