'Military Report and Route Book. The Arabian States of the Persian Gulf. 1939' [‎39v] (78/328)

58
8, Climate. —The atmosphere of Bahrein, owing to the
proximity of the sea on all sides and abundant irrigation,
is damp and heavy.
In January and February north winds blow and fires
are necessary in houses. Though the weather is hot from
the beginning of May to the middle of June, the heat is
tempered by the sea breeze and the nights are fairly cool.
The oppressively hot weather lasts from the middle of
July to the end of September. In this period, though
there may be irregular land breezes, the thermometer
remains persistently above 95° F.
All rams fall between November and May but actual
wet days are few.
The prevailing wind is the Shamal, or north-west wind.
om the second week in June it blows for 40 days
consecutively and is then called the Bariha. It is very
violent in winter. On 33 per cent, of the days of the
year the wind is north-west. On 20 per cent, of the days
of the year the wind is west. And on 17 per cent, of the
, ys !■! . e y ear the wind is north. For the remaining
days the winds and breezes are variable.
„ ' ias _ highest average annual relative
any P^ ace Persian Gulf The historical term used to describe the body of water between the Arabian Peninsula and Iran. , The maximum
Humidity, however, occurs in winter.
The maximum rainfall in 24 hours is 1-6 inches.
Month Rain in.
Jan.0'40
Feb'0-68 ,
March 0 • 52
April 0-24 ,
02
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« £
80
80
77
72
76
75
84
93
48
50
63
61
83
83
95
98
41
45
51
57