Date

Mean Pressure (hPa)

Air Temperature

Mean

Relative

Humidity

(%)

Total

Rainfall

(mm)

Maximum

(deg. C)

Mean

(deg. C)

Minimum

(deg. C)

September  2018

01

1009.9

27.9

26.3

25

93

32

02

1007.9

29.9

26.8

24.6

88

9.8

03

1006.9

30.5

27.7

25.6

82

0.3

04

1005.7

32

29.1

27

80

0

05

1004.9

33.1

29.8

27.9

79

0.1

06

1005.4

31.8

29.6

28.2

82

0

07

1006.3

31.2

29.4

28

80

Trace

08

1008.6

29.6

27.4

25.6

81

24.6

09

1011.5

30.5

27.1

24.6

76

16.7

10

1012.5

28.3

26.1

24.3

80

0.2

11

1009.3

32.7

28.2

25.2

65

0

12

1007.7

28.7

27.8

26.9

78

Trace

13

1009.4

30.3

27.7

26.3

84

2.5

14

1009.2

31.7

28.8

26.7

78

0

15

1002.8

35.1

30.7

26.8

65

Trace

16

990.9

31.8

26.4

23.6

86

167.5

17

1008.6

30.4

27.5

25.8

89

12

18

1013.7

31.8

28.2

26.5

85

1.2

19

1012.7

31.4

28.6

26.2

77

0

20

1011

31.9

29

27

77

0

21

1011.6

31.9

29.2

27.4

71

0

22

1013.3

33.2

29.2

27

76

0

23

1013.1

32.4

29

27.6

78

Trace

24

1011.1

29.6

27

24.8

88

72.2

25

1009.9

30.2

27

24.8

80

34.5

26

1009.6

28.6

26.8

25.1

81

9.7

27

1009.8

30.2

27.3

26

77

Trace

28

1009.9

31.3

27.6

25.8

70

0

29

1008.9

31.3

27.4

24.3

60

0

30

1009.9

27.9

26.3

25

93

32

 

Source: Hong Kong Observatory – Hong Kong Observatory