Appendix 39
(Chapter 18: The Environment)
Climatological Summary, 1975
245
Maxi-
Mini-
Month
Mean pressure at mean sea level
mum air tempera- ture
Mean air
ture
mum Mean Mean Mean Total air dew relative amount bright tempera-tempera- point humidity of cloud sunshine
Total
rainfall wind speed
Prevail- Mean
ing wind
ture
millibars °C
°C
°C
°C
per cent per cent hours
mm direction knots
January
February
March
:
1,020.3
24.4
16.0
10.5
11.8
77
77
88.9
35.8
E
6.3
1,018.0
25.3
17.5
12.4
12.8
76
68
117.3
35.7
Ε
6.1
1,015.0 26.3 18.5
11.5
15.5
83
91
43.6
81.5
E
9.1
April
May
:
...
1,012.1 30.8 24.2
16.4
20.6
81
75
138.7
345.0 E
3.4
:
1,009.2
31.7
26.6
22.0
24.0
86
81
123.3
571.5
E
4.4
June
July
August
September
:
:
1,006.1 32.6 27.4
23.4
24.5
85
81
111.3
579.6
[T]
E
4.5
1,007.3 32.7
28.3
23.5
24.7
81
64
229.6
292.4 WSW 3.6
A
1,003.0
32.8
27.7
23.0
25.0
85
74
169.4
458.9 E
5.8
1,009.7 33.9
27.8
22.9
24.1
81
59
193.8
96.0
Ε
- 3.5
-
October
1,010.7 32.7 25.2
16.9
21.3
80
70
141.1
465.6
E
7.5
November
4.
1,018.3 27.3 20.3
8.5
14.3
70
50
183.0
17.4
E
4.5
December
1,021,1
25.8
14.5
4.3
6.9
64
56
173.4
49.3 N
6.2
Mean ...
Total ...
1,012.6
22.8
18.8
79
71
E -5.6
|
1,713.4 3,028.7
+
Climatological Normals
(1884–1939; 1947–60)
Month
January
February
**
millibars *C*
1,019.9 26.9
1,018.4 27.8 15.2
°C
15.4
°C* °C
0.0 11.1
2.4 11.7
per cent per cent
hours mm direction knots
75
64
145.4 31.7
E
7.7
-
March
April
May
June
July
August
+
September
October
+
1,016.1 30.1
17.5
6.2 -14.8
288
79
75
100.2
46.9
E
8.9
83
82
94.7
72.2 E
9.4
1,012.7
33.4 21.3
9.9
18.8
85
80
114.6 135.8
E
8.7
:
:
1,009,2 35,5 25.2
15.4
22.4
85
76
156.1 292.7
[1]
E
8.3
1,005,9 35.6 27.3
19.2
24.2
84
78
159.9 401.2
E
7.6
:
:
1,004,9 35.7 27.9 22.2
24.7
83
69
213.7 371.7 E
[1]
6.8
1,004,9 36.1 27.7
21.6
24.6
84
67
200.9 370.8 E
6.5
1,008.4 35.2 27.1
18.4
23.1
79
61
197.5 278.8
E
7.8
1,013,8 34.3 24.6
14.1
19.3
November
December
Mean
Total
4
1,017.5 31.8
20.9
6.5 15.1
283
72
51
218.9 99.2
E
8.5
69
53
187,9
43.1
E
7.8
1,019.7 28.7
17.3
4.3
11.9
•
1,012.6
22.3
Į
18.5
22
70
55
172.6
24.9
E
7.2
79
68
E
7.9
1,963.1 2,168.8
|
1884-1939; 1947-75.
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