Appendix 38
(Chapter 18: The Environment)
Climatological Summary, 1973
249
Mean
Month
pressure at mean
sea level
Maxi-
mum air temper
Mini-
Mean air temper- ature
mum
air temper-
Mean Mean Mean Total dew relative amount bright point humidity of cloud sunshine
Prevail-
Mean
Total ing rainfall wind
direction
wind speed
ature
ature
mb
°C
°C
°C
°C
per cent per cent hours mm points
knots
January
February
1,019.0 21.8
16.0
9.7
12.0
78
76
100.9
57.8
E
6.9
1,017.5 27.8
19.2
14.3
16.3
84
71
109.1
21.7
E
6.2
March
April
...
1,016.6 30.1
20.8
15.7
17.3
81
78
113.6
13.3
[1]
E
7.0
1,010.9
31.3
24.0
15.2
21.5
87
May
June ...
July
August
September
1,009.2
32.4
26.8
21.6
24.5
88
88
83
86.1 104.3
E
6.0
81
132.0
516.6 E
6.1
=
:
1,005.5 33.1
27.5
22.8
25.0
87
80
138.9
373.7
E
5.6
T:
++
1,004.4 33.1
27.9
23.5
25.4
87
75
152.8
696.6
E
[T])]
5.4
1,005.1 32.9
27.6
23.6
25.0
86
77
149.9
826.4
E
5.7
-
1,011.1 33.0
27.3
22.8
24.2
84
72
142.2
476.0
E
5.2
October
1,013,0 32,0
24.8
18.5
18.7
November
1,017.7 28.0
20.9
15.5
14.2
25
70
67
555555
57
184.1
4.7
E
7.1
56
172.9
9.3
E
5.0
December
1,021.2 25.1
16.6
7.0
5.5
51
23
268.4 Trace
NNE
6.9
Mean
1,012.6
23.3
19.1
79
69
E
6.1
Total
:
|
1,750.9 3,100.4
1
Climatological Normals
(1884–1939; 1947–1960)
Month
mb
°C*
°C
°C*
°C per cent per cent hours
mm
points
knots
January
1,019.9 26.9
15.4
0.0
11.1
75
64
145.4
31.7
E
7,7
February
1,018.4 27.8
15.2
2.4
11.7
79
75
100.2
46.9
E
8.9
March
1,016.1 30.1
17.5
6.2
14.8
83
82
94.7
72.2
E
9.4
April
1,012.7 33.4
21.3
9.9
18.8
85
80
114.6
135.8
E
8.7
May
1,009.2 35.5
25.2
15.4
22.4
85
76
156.1
292.7
E
8.3
June ...
1,005,9 35.6
27.3
19,2
24.2
84
78
159.9 401.2
E
7.6
July...
1,004.9 35.7 27.9
22.2
24.7
August
1,004,9 36.1
27.7
21.6
24.6
888
83
69
213,7
371.7 E
6.8
84
67
200.9
370.8
E
6.5
September
1,008.4 35.2
27.1
18.4
23.1
October
1,013.8 34.3
24.6
14.1
19.3
72
22
79
61
197.5 278.8
E
7.8
51
218.9
99.2
E
8.5
November
1,017.5 31.8
20.9
6.5
15.1
December
--
1,019.7 28.7
17.3
4.8
11.9
$2
69
53
187.9
43.1
E
7.8
70
55
172.6
24.9
E
7.2
Mean
1,012.6
22.3
Total
|
|
|
18.5
79
68
E
7.9
|
1
***
1,963,1 2,168,8
1
* 1884-1939; 1947-1973.
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