Weather

Although Sudan lies within the tropics, the climate ranges from arid in the north to tropical  in the far southwest and temperatures do not vary greatly with the season.
From January to March, the country is under the influence of the dry north easterlies and there is practically no rainfall. Early April sees heavy rains and thunderstorms.
The warmest months are invariably May and June, when temperatures can reach 48° C or more than 118 degrees Fahrenheit.
In some years, the arrival of the south westerlies with their plentiful supply of rain has either been delayed or has failed to happen altogether; causing widespread drought and famine. The 1970s and 1980s saw a frequent failure of these winds, with disastrous results for the Sudanese people and their economy.
The haboob, a violent dust storm, can occur in central Sudan when the moist south westerly flow first arrives (May through July). The moist, unstable air forms thunderstorms in the heat of the afternoon and produces a huge wall of yellow sand and clay that can temporarily reduce visibility to zero.

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Temperature (Average °C)

Month

Min (°C)

Max (°C)

Min (°F)

Max (°F)

Rainfall (mm)

January

31

16

88

61

0

February

33

17

91

63

0

March

37

21

98

70

0

April

40

24

104

75

1

May

42

27

107

80

4

June

41

27

106

80

5

July

38

26

100

79

46

August

37

25

98

77

75

September

39

26

102

79

25

October

39

26

102

79

5

November

35

21

95

70

1

December

32

17

89

63

0