Climate Region

Meteorological Station

Temperature (˚C)

Relative Humidity (%)

ET (˚C)

THI (˚C)

RSI (ratio)

Minimum

Maximum

Mean

M

SD

M

SD

M

SD

M

SD

M

SD

M

SD

M

SD

Tropical Savanna (Sahel)

Nguru

21.2

4.4

35.3

3.6

28.2

3.5

36.5

21.1

23.1

1.5

24.2

1.5

0.17

0.05

Tropical Savanna (Sudan)

Katsina

19.4

4.3

33.7

3.4

26.5

3.5

38.9

23.5

22.5

0.6

23.3

0.6

0.13

0.02

Sokoto

22.0

3.6

35.2

3.2

28.6

3.0

42.7

23.6

24.4

0.6

25.4

0.6

0.19

0.03

Maiduguri

20.1

4.6

35.3

3.6

27.7

3.6

39.9

20.7

23.5

0.6

24.4

0.6

0.16

0.02

Potiskum

19.7

4.5

34.4

3.3

27.0

3.4

39.5

23.9

22.4

1.3

23.3

1.2

0.13

0.10

Yelwa

21.3

3.6

34.1

3.0

27.7

2.3

60.7

19.1

24.9

0.5

25.5

0.7

0.18

0.06

Bauchi

19.0

3.5

32.7

2.8

25.8

2.6

46.7

23.1

22.4

0.7

23.1

0.7

0.09

0.10

Yola

21.7

3.2

34.7

3.1

28.2

2.4

55.2

23.5

24.9

0.9

25.7

0.9

0.21

0.05

Montane

Jos

16.0

2.3

27.6

2.3

21.8

1.7

50.0

25.9

19.4

0.3

19.6

0.4

0.01

0.01

Tropical Savanna (Guinea)

Bida

22.8

1.8

33.7

2.8

28.3

1.9

64.4

18.1

25.5

0.8

26.1

0.6

0.21

0.06

Ilorin

21.3

1.7

32.2

2.6

26.8

1.6

74.4

11.6

24.4

0.5

24.9

0.5

0.17

0.02

Lokoja

22.8

2.0

33.0

2.4

27.9

1.7

73.4

8.2

25.9

0.7

26.3

0.6

0.22

0.04

Makurdi

22.3

2.5

33.3

2.6

27.8

1.8

69.8

14.2

25.4

0.9

25.9

0.7

0.21

0.04

Tropical Wet and Dry

Ikeja

23.1

1.3

30.9

1.9

27.0

1.4

82.6

5.8

25.3

0.6

26.1

0.6

0.21

0.04

Benin

23.0

0.8

31.3

2.0

27.1

1.4

83.9

5.7

25.9

0.6

26.1

0.6

0.21

0.04

Calabar

22.8

1.0

30.6

1.8

26.8

1.2

85.1

5.0

25.7

0.9

25.9

0.8

0.19

0.09

Tropical Wet

Warri

23.1

0.9

31.4

1.8

27.3

1.2

83.9

4.8

26.1

0.4

26.3

0.9

0.22

0.02

Port Harcourt

22.4

1.2

31.1

1.8

26.7

1.1

83.4

5.5

25.6

0.4

24.8

2.1

0.20

0.03

Overall mean

21.4

3.4

32.8

3.4

27.0

2.8

62.0

24.8

24.1

0.9

24.8

1.8

0.20

0.18