The Australian Army Medical Corps in Egypt / An Illustrated and Detailed Account of the Early Organisation and Work of the Australian Medical Units in Egypt in 1914-1915

by Sir James W. Barrett; P. E. Deane

The Egyptian Climate

Those who know Helouan and the hotel will not be surprised at the success of the Hospital, but it may surprise even those who know Egypt to learn that Helouan is considerably cooler than Cairo, notwithstanding the fact that it is situated on the edge of the desert. Owing to dryness the Wet Bulb temperature is considerably lower than at Cairo in midsummer and the nights are always cool.

It must be remembered that the figures in the attached table give means only, and that any registration over 75°F. Wet Bulb is high, and that at 80°F. Wet Bulb work becomes difficult. At 90°F. Wet Bulb the danger point is reached, and all work must cease on pain of death from heat apoplexy.

It will be seen, then, that Egypt is not especially hot, even from May till October, and that Helouan is particularly cool. These conclusions coincide with the feelings of those who live there. Alexandria is pleasant by day, because of the sea breezes, but at night most people prefer Heliopolis, which is drier and where they are more likely to enjoy a breeze.

These observations apply to the weather after May. From March to May the khamsin may blow for several days. The temperature then is high, but the air very dry. Khamsins usually cease in May.