Date

Mean Pressure (hPa)

Air Temperature

Mean

Relative

Humidity

(%)

Total

Rainfall

(mm)

Maximum

(deg. C)

Mean

(deg. C)

Minimum

(deg. C)

May 2017

01

1012.6

29.5

25.0

22.6

81

0.0

02

1011.9

28.1

26.1

24.3

85

0.0

03

1011.4

31.3

27.5

25.6

82

Trace

04

1011.9

27.6

24.9

22.9

90

42.5

05

1013.7

29.8

26.1

23.4

81

0.0

06

1014.8

31.1

27.5

25.3

79

Trace

07

1014.6

27.7

25.6

24.8

86

1.8

08

1012.0

28.6

25.9

23.1

83

9.2

09

1012.4

29.3

25.9

22.6

81

10.8

10

1013.8

29.6

27.1

25.3

81

0.0

11

1013.8

31.6

27.5

25.7

81

0.0

12

1010.9

30.7

27.5

26.0

76

Trace

13

1010.2

26.6

25.8

24.5

80

4.7

14

1010.4

29.5

26.7

24.8

85

Trace

15

1008.7

27.0

25.5

24.6

94

38.5

16

1007.6

26.6

25.0

23.6

85

3.0

17

1009.7

29.9

26.0

23.8

77

0.0

18

1012.0

27.4

25.5

24.3

74

0.1

19

1011.0

26.0

24.6

23.7

80

0.7

20

1008.7

24.8

23.9

22.7

88

0.3

21

1007.7

24.9

23.9

23.0

90

4.4

22

1008.1

25.2

24.6

23.8

93

5.6

23

1007.8

28.5

26.1

24.6

93

4.1

24

1006.8

26.2

25.3

24.2

95

273.6

25

1008.7

28.5

25.5

23.9

79

0.0

26

1010.2

26.8

25.0

23.9

76

0.0

27

1010.0

30.4

26.1

24.0

65

Trace

28

1009.6

30.5

26.7

24.8

68

0.0

29

1009.9

30.3

26.6

24.9

74

0.0

30

1009.4

30.9

27.0

25.1

80

Trace

31

1006.6

31.3

28.2

25.6

79

0.0

Source: Hong Kong Observatory – Hong Kong Observatory