"تقرير عسكري عن جنوب غرب بلاد فارس، يتضمن أقاليم خوزستان (عربستان)، لورستان، وجزءًا من فارس" [‎٣‎٧] (٤٦٦/٦٤)

37
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Tliere is seldom any bad weather after the middle of this month.
]\/[ a y e —The weather getting hot in this month. It is generally fine;
moderate shamdls frequent; bad squalls have been experienced, but are
exceptional. _ , ^ ,
The following table shows the average range of Fahrenheit s thermometer
in each month on boardship from observations extending over 4 years. On
shore the range would be more considerable. As the observations were spiead
over the whole sea, the temperature in the northern half would be some degrees
lower, and in the southern higher, than this average :
Montli.
Average
maximum,
4 P. M.
Average
minimum,
4 A. M.
|
Month.
Average
maximum,
4 P, M.
Average
minimum,
4. A. M.
o
o
o
o
January
69
65
July
914
89
February
67
63
August
94
89
Marcli
75
694
September
90
834
April
80^
75
October
854
81
May
85
81
November
804
76
June
894
85
December
74
70
Lowest temperature observed 45° in February; highest temperature
observed 1(K) 0 in August. Ey an extract from the log of K I. C. S. Psyche
on 21st February 1825 near Kowei't the thermometer daring a shamdl fell
to 35°.
For temperature and climate of Bushire, see Revised Gazetteer of Persia,
pages 59 to 68.
The rainfall is small and variable; it may average 8 inches, or from that
Rainfall ^ ^ ^ y ear * This is at Bu-shahr, where alone it
has been approximately registered. On the Arab coast
it is probably less. With rare exceptions, it falls chiefly in the autumn and
winter months. On the coast of the southern bay of the gulf the rain is said to
fall very rarely {see JBus/iire, Pevised Gazetteer of Persia, page 5^).
j) e w.—The dews are very heavy, particularly in the summer months,
when the sails appear in the morning as if a heavy shower had fallen.
Fogs.—^-Dense fogs, wetting everything like rain, occur at times near the
coast, and always in the morning. They only last a few hours.
Barometer. —The range of the barometer is not great compared with
more northern latitudes, although greater than in the Indian Ocean.
In winter the utmost variation is 0*6 inches, the height ranging between
and ; average about 30*00".
In summer there is a remarkable permanent depression of the mercury.
It begins to fall about the beginning of May, and during June, July,
and August stands, with little variation, at about 29*55 // , varying between
29-45" and 29'eb". By the end of September it again stands at its average
at about 30"00 v .