HONG KONG CLIMATE
TEMPERATURE & RELATIVE HUMIDITY
20
30
40
C
50
%
MONTHLY RAINFALL
mm
90
1400
1951-1980
MEAN MONTHLY
RELATIVE HUMIDITY
AIR TEMPER
70
1200
80
1000
400
200
1887
1983
1983
10
0
MONTH 1 2 3 4 5 6 7 8
9 10 11 12 MONTH
MONTH 1 2 3 4
MEAN ANNUAL RAINFALL
1953-1982
0
ง
-1600-
Mun
Yuen Long
KOWLOON
km 0
4
12
16
20 km
Series AR/8/CM
LID
Cartography by Survey Division, Lands Department.
Hong Kong Government.
926!
1917
1982
1952
1974
1914
1952
RAINFALL
YEAR
RECORDED
FAINFALL SCALE
WETTEST YEAR ON RECORD 1982
3247.5mm
MILLIMETRES
MAXIMUM
4000
MONTHLY
(1884-1939)
3600
&
Mean Annual 1951-1980
1982
(1947-1983)
3200
Rainfall
2800
-1982
2400
2000
1600
1200
1974
MEAN MONTHLY (1951-1980)
RAINFALL
5 6 7 8 9 10 11 12 MONTH,
--400-13OHYETS
-800-(in millimetres)
yourung
Waglan
o Island
2000
1600
Ping Chau
WIND ROSE
ROYAL OBSERVATORY HEADQUARTERS (1951-1980)
variable 0.3%
N
15%
20%
25%
30%
2800
Yuen Long
KOWLOON
-2800-
-3200
Waglan Island
km 0
4
8
12
20 km
BEAUFORT SCALE AND EQUIVALENT SPEEDS
WIND
DESCRIPTIVE TEAMS
Calm
Light wind
Moderate wind
SUSTAINED WIND SPEED IN KNOTS
BEAUFORT FORCE
<1
1-6
0 1-2
7-16
3-4
Fresh wind
Strong wind
Gale
Storm
Hurricane
17-21
5
22-33
6-7
34-47
8-9
48-63
>63
10-11 12
1-2
1-6
3-4 5-6 > 7. Beaufort force
7-18 17-27 28 Wind speed
in knots
Beaufort Scale - An international system
for describing wind force.
Knot - 1 knot is 1 nautical mile per hour
which is 1.852 kilometres per hour.
{
E
FREQUENCY OF OCCURRENCE OP WIND DIRECTION AND SPEED
THE BOYAF OBSERVATORY HEADQUARTERS AND WAGLAN ISLAND
JBE
J
MONTH,PALVAILING WIND DIRECTION AND MEAN SPEED
OBSERVED AT WAGLAN ISLAND (1953-1962)
WIND ROSE WAGLAN ISLAND
(1975-1980) variable 0.3%
knots
12.8
12.4
11.6 10.4
10.2
11,3
10.3
919
11.6
14.0
14.4
13.4 knots
JAN
FEB
MAR IPA
MAY JUN
JUL
AUG
SEP
OCT
NOV
DEC
calm
1.4%%
10%
15%
20%
25%
30%
$
Data supplied by the Royal Observatory, Hong Kong.
E
Ping
Chau