Editing Geography of Eritrea (section)

== Climate ==
[[File:Koppen-Geiger Map ERI present.svg|thumb|Eritrea's climate according to Köppen]]
The climate of Eritrea is shaped by its diverse topography and its location within the tropics. The diversity in landscape and topography in the highlands and lowlands of Eritrea results in a diverse climate. The highlands have a temperate climate throughout the year, while most lowland zones are arid or semiarid.

The distribution of rainfall and vegetation types varies markedly throughout the country. Eritrean climate varies on the basis of seasonal and altitudinal differences. Based on variations in temperature Eritrea can be broadly divided into three major climate zones: a temperate zone, a subtropical climate zone and a tropical climate zone.<ref name=Mussie>{{cite book|author=Mussie Tesfagiorgis G.|title=Eritrea|url=https://books.google.com/books?id=f0R7iHoaykoC&pg=PA10 |year=2010 |publisher=ABC-CLIO |isbn=978-1-59884-232-6 |pages=10–11}}</ref> According to the [[Köppen climate classification]], most of Eritrea has either a [[hot semi-arid climate]] (''BSh'') or a [[hot desert climate]] (''BWh''), although temperatures are much moderated at the highest elevations.<ref name=Mussie/>

In the central highlands, the hottest month is usually May to June with highs around {{convert|27|to|30|°C|°F|1}}. Winter is between December and February with lows at night that can be near freezing point. [[Asmara]] itself enjoys a pleasant climate all year round, although it can be quite cold at night in winter. There are two rainy seasons: the short rains in March and April and the main rains from late June to the beginning of September. The climate is usually sunny and dry as annual sunshine durations average around 3,000 hours and average annual rainfall shover around {{convert|500|mm|in|2|disp=or}}.<ref name=Mussie/>
 
On the coast along the [[Red Sea]], the summertime is long, from June to September and extremely hot with averages high temperatures ranging from {{convert|40|to|46|°C|°F|1}}, and it's even hotter in Denkalia. The wintertime is nearly non-existent. Average high temperatures remain above {{convert|28|°C|°F|1|disp=or}} during the least hot month of the year, while average low temperatures exceed {{convert|20|°C|°F|disp=or}}. The rainy season along the coast north of [[Denkalia]] falls during the winter months but rainy days still remain scarce; rainfall is even more rare in Denkalia Region. The climate is always sunny and dry in this zone and cloudy days are rare.<ref name=Mussie/>

In the western lowlands, the high temperatures are comparable to those on the coast in the hottest months of April until June. December is the coolest month with averages low temperatures falling as low as {{convert|15|°C|°F|disp=or}}. The rainy seasons are the same as for the highlands.<ref name=Mussie/>

{{Weather box
|location = Asmara (1961–1990, extremes 1903–2012)
|metric first = yes
|single line = yes
|Jan high C = 22.3
|Feb high C = 23.8
|Mar high C = 25.1
|Apr high C = 25.1
|May high C = 25.0
|Jun high C = 24.9
|Jul high C = 21.6
|Aug high C = 21.5
|Sep high C = 22.9
|Oct high C = 21.7
|Nov high C = 21.5
|Dec high C = 21.5
|year high C = 23.1
|Jan mean C = 13.8
|Feb mean C = 14.9
|Mar mean C = 16.3
|Apr mean C = 17.0
|May mean C = 17.6
|Jun mean C = 17.6
|Jul mean C = 16.3
|Aug mean C = 16.1
|Sep mean C = 15.7
|Oct mean C = 14.9
|Nov mean C = 14.0
|Dec mean C = 13.2
|year mean C = 15.6
|Jan low C = 4.3
|Feb low C = 5.1
|Mar low C = 7.5
|Apr low C = 8.7
|May low C = 10.2
|Jun low C = 10.5
|Jul low C = 10.8
|Aug low C = 10.7
|Sep low C = 8.6
|Oct low C = 8.1
|Nov low C = 6.6
|Dec low C = 4.8
|year low C = 8.0
|rain colour = green
|Jan rain mm = 3.7
|Feb rain mm = 2.0
|Mar rain mm = 14.6
|Apr rain mm = 33.4
|May rain mm = 41.1
|Jun rain mm = 38.5
|Jul rain mm = 174.9
|Aug rain mm = 155.6
|Sep rain mm = 15.6
|Oct rain mm = 15.4
|Nov rain mm = 20.4
|Dec rain mm = 3.4
|unit rain days = 1.0 mm
|Jan rain days = 0
|Feb rain days = 0
|Mar rain days = 2
|Apr rain days = 4
|May rain days = 5
|Jun rain days = 4
|Jul rain days = 13
|Aug rain days = 12
|Sep rain days = 2
|Oct rain days = 2
|Nov rain days = 2
|Dec rain days = 1
|Jan humidity = 54
|Feb humidity = 48
|Mar humidity = 46
|Apr humidity = 49
|May humidity = 48
|Jun humidity = 48
|Jul humidity = 76
|Aug humidity = 80
|Sep humidity = 59
|Oct humidity = 63
|Nov humidity = 66
|Dec humidity = 61
|year humidity = 58.2
|Jan sun = 291.4
|Feb sun = 260.4
|Mar sun = 275.9
|Apr sun = 264.0
|May sun = 257.3
|Jun sun = 219.0
|Jul sun = 151.9
|Aug sun = 158.1
|Sep sun = 213.0
|Oct sun = 272.8
|Nov sun = 276.0
|Dec sun = 282.1
|year sun = 2921.9
|Jand sun = 9.4
|Febd sun = 9.3
|Mard sun = 8.9
|Aprd sun = 8.8
|Mayd sun = 8.3
|Jund sun = 7.3
|Juld sun = 4.9
|Augd sun = 5.1
|Sepd sun = 7.1
|Octd sun = 8.8
|Novd sun = 9.2
|Decd sun = 9.1
|yeard sun = 
|source 1 = NOAA<ref name= NOAAAsmara>{{cite web
|url = ftp://ftp.atdd.noaa.gov/pub/GCOS/WMO-Normals/TABLES/REG__I/E1/63021.TXT
|title = Asmara Climate Normals 1961–1990
|publisher = [[National Oceanic and Atmospheric Administration]]
|access-date = 13 January 2015}}</ref>
|source 2 =  Meteo Climat (record highs and lows)<ref name = meteoclimat>
{{cite web 
|url = http://meteo-climat-bzh.dyndns.org/index.php?page=stati&id=1834
|title = Station Asmara
|publisher = Meteo Climat 
|language = fr 
|access-date = 22 October 2016}}</ref>
|date=January 2012
}}

{{Weather box
|location = Assab (1961–1990, extremes 1937–1990)
|single line = Yes
|metric first = Yes
|Jan record high C = 37.0
|Feb record high C = 37.0
|Mar record high C = 40.0
|Apr record high C = 43.0
|May record high C = 43.2
|Jun record high C = 46.2
|Jul record high C = 49.0
|Aug record high C = 48.4
|Sep record high C = 46.8
|Oct record high C = 43.0
|Nov record high C = 39.0
|Dec record high C = 36.5
|year record high C = 49.0
|Jan high C = 31.3
|Feb high C = 31.7
|Mar high C = 33.8
|Apr high C = 36.0
|May high C = 37.0
|Jun high C = 38.5
|Jul high C = 41.2
|Aug high C = 40.9
|Sep high C = 38.1
|Oct high C = 36.5
|Nov high C = 33.9
|Dec high C = 31.6
|year high C = 35.5
|Jan mean C = 26.3
|Feb mean C = 26.7
|Mar mean C = 28.5
|Apr mean C = 30.5
|May mean C = 32.0
|Jun mean C = 33.1
|Jul mean C = 35.0
|Aug mean C = 34.6
|Sep mean C = 32.9
|Oct mean C = 31.2
|Nov mean C = 28.8
|Dec mean C = 26.9
|year mean C = 30.5
|Jan low C = 21.3
|Feb low C = 21.7
|Mar low C = 23.2
|Apr low C = 25.1
|May low C = 27.0
|Jun low C = 28.5
|Jul low C = 30.3
|Aug low C = 29.9
|Sep low C = 28.5
|Oct low C = 26.0
|Nov low C = 23.7
|Dec low C = 22.2
|year low C = 25.6
|Jan record low C = 11.9
|Feb record low C = 12.4
|Mar record low C = 13.7
|Apr record low C = 14.0
|May record low C = 14.4
|Jun record low C = 17.5
|Jul record low C = 19.6
|Aug record low C = 19.9
|Sep record low C = 16.0
|Oct record low C = 15.0
|Nov record low C = 14.5
|Dec record low C = 12.1
|year record low C = 11.9
|rain colour = green
|Jan rain mm = 4.0
|Feb rain mm = 6.7
|Mar rain mm = 1.8
|Apr rain mm = 3.6
|May rain mm = 1.7
|Jun rain mm = 0.2
|Jul rain mm = 6.9
|Aug rain mm = 2.8
|Sep rain mm = 1.1
|Oct rain mm = 1.0
|Nov rain mm = 4.5
|Dec rain mm = 4.8
|unit rain days = 1.0 mm
|Jan rain days = 1
|Feb rain days = 1
|Mar rain days = 0
|Apr rain days = 0
|May rain days = 0
|Jun rain days = 0
|Jul rain days = 1
|Aug rain days = 0
|Sep rain days = 0
|Oct rain days = 0
|Nov rain days = 0
|Dec rain days = 0
|year rain days = 3
|Jan humidity = 62
|Feb humidity = 68
|Mar humidity = 61
|Apr humidity = 54
|May humidity = 58
|Jun humidity = 57
|Jul humidity = 50
|Aug humidity = 54
|Sep humidity = 62
|Oct humidity = 54
|Nov humidity = 55
|Dec humidity = 61
|year humidity = 58
|source 1 = NOAA,<ref name= AssabNOAA>{{cite web
| url = ftp://ftp.atdd.noaa.gov/pub/GCOS/WMO-Normals/TABLES/REG__I/E1/63043.TXT
| title = Assab Climate Normals 1961–1990
| publisher = [[National Oceanic and Atmospheric Administration]]
| access-date = March 8, 2015}}</ref> [[Deutscher Wetterdienst]] (humidity, 1937–1970)<ref name = assabDWD>{{cite web
| url = http://www.dwd.de/DWD/klima/beratung/ak/ak_630430_kt.pdf
| title = Klimatafel von Assab (Aseb) / Eritrea
| work = Baseline climate means (1961-1990) from stations all over the world
| publisher = Deutscher Wetterdienst
| language = de
| access-date = November 18, 2016
| archive-url = https://web.archive.org/web/20190831075045/https://www.dwd.de/DWD/klima/beratung/ak/ak_630430_kt.pdf
| archive-date = August 31, 2019
| url-status = dead
}}</ref>
|source 2 =  Meteo Climat (record highs and lows)<ref name = assabmeteoclimat>
{{cite web 
| url = http://meteo-climat-bzh.dyndns.org/index.php?page=stati&id=1833
| title = Station Assab
| publisher = Meteo Climat 
|language = fr 
| access-date = 22 October 2016}}</ref>
|date=November 2011
}}