Climate of Egypt

Source: Wikipedia, the free encyclopedia.
Satellite map
Köppen climate map of Egypt

Egypt essentially has a hot desert climate (Köppen climate classification BWh). The climate is generally extremely dry all over the country except on the northern Mediterranean coast which receives rainfall in winter. In addition to rarity of rain, extreme heat during summer months is also a general climate feature of Egypt although daytime temperatures are more moderated along the northern coast.

Prevailing wind

The prevailing northwesterly wind from the Mediterranean Sea continuously blows over the northern coast without the interposition of an eventual mountain range and thus, greatly moderates temperatures throughout the year. Because of the effect, average low temperatures vary from 9.5 °C (49.1 °F) in wintertime to 23 °C (73.4 °F) in summertime and average high temperatures vary from 17 °C (62.6 °F) in wintertime to 32 °C (89.6 °F) in summertime. Though temperatures are moderated along the coasts, the situation changes in the interior, which is away from the moderating northerly winds. Thus, in the central and the southern parts, nighttime temperatures are very hot, especially in summers when average high temperatures can exceed 40 °C (104 °F), as in Aswan, Luxor, Asyut or Sohag which are located in the deserts of Egypt.

Sand storms

The Nile after the ″dragon storm″ in March 2020

Every year, sometime from March to May, an extremely hot, dry and dusty wind blows from the south or the southwest. This wind is called khamasīn. When the flow of dry air continuously blows over vast desert regions, it picks up fine sand and dust particles and finally results in a dusty wind which is generally felt in the periphery of the desert. When this wind blows over Egypt, it causes high temperatures to soar temporarily at dangerous levels, usually over 45 °C (113 °F), the relative humidity levels to drop under 5%. The khamasīn causes sudden, early heat waves and the absolute highest temperature records in Egypt.

Rainfall

Egypt is the eighth most water stressed country in the world.

Egypt receives between 20 mm (0.79 in) and 200 mm (7.87 in) of annual average precipitation along the narrow Mediterranean coast, but south from Cairo, the average drops to nearly 0 millimetres (0.00 inches) in the central and the southern part of the country. The cloudiest, rainiest places are in and around Alexandria and Rafah. The sunshine duration is high all over Egypt, ranging from a low of 3,300 hours along the northernmost part in places such as Alexandria to reach a high of over 4,000 hours farther in the interior, in most of the country.

Mountainous areas

Some mountainous locations in Sinai, such as Saint Catherine, have cooler night temperatures, due to their high elevations. It usually snows on the Sinai mountains, but it almost never snows in the cities of Giza, Cairo, and Alexandria. For example, in December 2013, Cairo received a single overnight snowfall for the first time since 1901.

General information

Climate data for Cairo (Cairo International Airport) 1991–2020
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °C (°F) 31.0
(87.8)
34.2
(93.6)
37.9
(100.2)
43.2
(109.8)
47.8
(118.0)
46.4
(115.5)
42.6
(108.7)
43.4
(110.1)
43.7
(110.7)
41.0
(105.8)
37.4
(99.3)
30.2
(86.4)
47.8
(118.0)
Mean daily maximum °C (°F) 18.9
(66.0)
20.5
(68.9)
23.8
(74.8)
28.1
(82.6)
32.2
(90.0)
34.6
(94.3)
35.0
(95.0)
34.9
(94.8)
33.4
(92.1)
30.0
(86.0)
24.9
(76.8)
20.5
(68.9)
28.1
(82.6)
Daily mean °C (°F) 14.4
(57.9)
15.6
(60.1)
18.3
(64.9)
21.8
(71.2)
25.6
(78.1)
28.2
(82.8)
29.1
(84.4)
29.2
(84.6)
27.6
(81.7)
24.6
(76.3)
20.0
(68.0)
15.9
(60.6)
22.5
(72.5)
Mean daily minimum °C (°F) 10.1
(50.2)
11.0
(51.8)
13.2
(55.8)
15.9
(60.6)
19.3
(66.7)
22.2
(72.0)
23.8
(74.8)
24.3
(75.7)
22.7
(72.9)
20.0
(68.0)
15.6
(60.1)
11.7
(53.1)
17.5
(63.5)
Record low °C (°F) 1.2
(34.2)
3.6
(38.5)
5.0
(41.0)
7.6
(45.7)
12.3
(54.1)
16.0
(60.8)
18.2
(64.8)
19.0
(66.2)
14.5
(58.1)
12.3
(54.1)
5.2
(41.4)
3.0
(37.4)
1.2
(34.2)
Average precipitation mm (inches) 4.8
(0.19)
3.8
(0.15)
6.3
(0.25)
1.3
(0.05)
0.2
(0.01)
0
(0)
0
(0)
0
(0)
0
(0)
0.7
(0.03)
4.3
(0.17)
3.4
(0.13)
24.8
(0.98)
Average precipitation days (≥ 1.0 mm) 1.3 2.0 1.2 1.3 0.6 0.6 0.7 1.0 0.7 0.1 0.6 0.8 11.0
Average relative humidity (%) 59 54 53 47 46 49 58 61 60 60 61 61 56
Average dew point °C (°F) 5.2
(41.4)
5.0
(41.0)
6.1
(43.0)
7.5
(45.5)
10.1
(50.2)
13.9
(57.0)
17.5
(63.5)
18.3
(64.9)
16.7
(62.1)
14.0
(57.2)
10.7
(51.3)
6.7
(44.1)
11.0
(51.8)
Mean monthly sunshine hours 213 234 269 291 324 357 363 351 311 292 248 198 3,451
Percent possible sunshine 66 75 73 75 77 85 84 86 84 82 78 62 77
Average ultraviolet index 4 5 7 9 10 11.5 11.5 11 9 7 5 3 7.8
Source 1: NOAA (humidity, dew point, records 1961–1990)[1][2]
Source 2: Danish Meteorological Institute for sunshine (1931–1960)[3] and Weather2Travel (ultraviolet)[4]
Alexandria
Climate chart (explanation)
J
F
M
A
M
J
J
A
S
O
N
D
 
 
53
 
 
18
9
 
 
29
 
 
19
9
 
 
14
 
 
21
11
 
 
3.6
 
 
24
13
 
 
1.3
 
 
27
17
 
 
0
 
 
29
20
 
 
0
 
 
30
23
 
 
0.1
 
 
30
23
 
 
0.8
 
 
30
21
 
 
9.4
 
 
28
18
 
 
32
 
 
24
14
 
 
53
 
 
20
11
Average max. and min. temperatures in °C
Precipitation totals in mm
Source: World Meteorological Organization[5]
Imperial conversion
JFMAMJJASOND
 
 
2.1
 
 
65
49
 
 
1.1
 
 
67
49
 
 
0.6
 
 
70
51
 
 
0.1
 
 
75
56
 
 
0.1
 
 
80
62
 
 
0
 
 
83
69
 
 
0
 
 
85
73
 
 
0
 
 
87
74
 
 
0
 
 
85
70
 
 
0.4
 
 
82
64
 
 
1.2
 
 
75
58
 
 
2.1
 
 
68
51
Average max. and min. temperatures in °F
Precipitation totals in inches
Luxor
Climate chart (explanation)
J
F
M
A
M
J
J
A
S
O
N
D
 
 
0
 
 
23
5
 
 
0
 
 
25
7
 
 
0
 
 
27
10
 
 
0
 
 
35
16
 
 
0
 
 
39
20
 
 
0
 
 
41
23
 
 
0
 
 
41
24
 
 
0
 
 
40
23
 
 
0
 
 
39
21
 
 
1
 
 
35
17
 
 
0
 
 
29
12
 
 
0
 
 
24
7
Average max. and min. temperatures in °C
Precipitation totals in mm
Source: Climate Charts[6]
Imperial conversion
JFMAMJJASOND
 
 
0
 
 
73
42
 
 
0
 
 
78
45
 
 
0
 
 
81
51
 
 
0
 
 
95
61
 
 
0
 
 
103
68
 
 
0
 
 
107
73
 
 
0
 
 
106
74
 
 
0
 
 
105
74
 
 
0
 
 
102
70
 
 
0
 
 
96
63
 
 
0
 
 
84
53
 
 
0
 
 
76
45
Average max. and min. temperatures in °F
Precipitation totals in inches
Saint Catherine
Climate chart (explanation)
J
F
M
A
M
J
J
A
S
O
N
D
 
 
3
 
 
14
2
 
 
2
 
 
15
2
 
 
4
 
 
19
6
 
 
4
 
 
24
10
 
 
0
 
 
28
14
 
 
0
 
 
31
16
 
 
0
 
 
32
18
 
 
0
 
 
32
18
 
 
0
 
 
31
16
 
 
1
 
 
26
12
 
 
3
 
 
20
7
 
 
4
 
 
16
4
Average max. and min. temperatures in °C
Precipitation totals in mm
Source: Climate Charts[7]
Imperial conversion
JFMAMJJASOND
 
 
0.1
 
 
57
35
 
 
0.1
 
 
58
36
 
 
0.2
 
 
65
42
 
 
0.2
 
 
75
50
 
 
0
 
 
82
57
 
 
0
 
 
88
61
 
 
0
 
 
90
64
 
 
0
 
 
90
64
 
 
0
 
 
87
61
 
 
0
 
 
78
54
 
 
0.1
 
 
68
45
 
 
0.2
 
 
60
39
Average max. and min. temperatures in °F
Precipitation totals in inches
Topography map
Snow in Saint Catherine, Sinai Peninsula (1 March 2009)
Notable climatic features
[8]
Cities or resorts with coolest summer days
Places with least temperature fluctuation
Wettest places
Cities or resorts with warmest winter nights
Cities with most temperature fluctuation between days and nights

See also

References

  1. ^ "Cairo Airport Normals 1991–2020". World Meteorological Organization Climatological Standard Normals (1991–2020). National Oceanic and Atmospheric Administration. Archived from the original on 2 October 2023. Retrieved 2 October 2023.
  2. ^ "Cairo (A)". World Meteorological Organization Climatological Reference Normals (1961–1990). National Oceanic and Atmospheric Administration. Archived from the original on 2 October 2023. Retrieved 2 October 2023.
  3. ^ Cappelen, John; Jensen, Jens. "Egypten - Cairo" (PDF). Climate Data for Selected Stations (1931–1960) (in Danish). Danish Meteorological Institute. p. 82. Archived from the original (PDF) on April 27, 2013. Retrieved April 14, 2014.
  4. ^ "Cairo Climate Guide: Monthly Weather, Egypt". Retrieved 29 June 2019.
  5. ^ "World Weather Information Service – Alexandria". World Meteorological Organization. Retrieved 10 July 2013.
  6. ^ "Luxor, Egypt: Climate, Global Warming, and Daylight Charts and Data". Climate Charts. Archived from the original on 24 December 2018. Retrieved 10 July 2013.
  7. ^ "St. Katrine, Egypt: Climate, Global Warming, and Daylight Charts and Data". Climate Charts. Archived from the original on 7 November 2017. Retrieved 10 July 2013.
  8. ^ "Egypt Climate Index". Climate Charts. Archived from the original on 23 June 2012. Retrieved 20 June 2013.