ZEMCH 2015 - International Conference Proceedings | Page 630

tropical desert climate. Dubai summers are very hot, humid and sunny, on day time the average
high reaches to 40°C (104°F) and sometimes even higher than 40°C, and at night the temperature
falls to 30°C (86°F). On the other hand, winter days are short and warm with an average temperature of 23°C and overnight falls to 14°C. Dubai weather can bring short and irregular rainfall from
December to March (Holiday-Weather 2014). The most comfortable climatic condition period in
Dubai is between Decembers to March. The overall climatic conditions in Dubai are indicated in
Figure 3 below.

Figure 3: Dubai climate (Climate Consultant 5 2014)
As can be seen in above graph (Fig. 3), Dubai temperature ranges throughout the year with August and July the temperature rise above 40°C, which is above the comfort zone.
From the below graph (Fig. 4), it can be seen that in May the global horizontal radiation reaches
to 578 wh/sq.m, in October the direct normal reaches to 575 wh/sq.m, and in April the diffused
radiation reaches to 172 wh/sq.m.

Figure 4: Dubai hourly averages (Climate Consultant 5 2014)

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ZEMCH 2015 | International Conference | Bari - Lecce, Italy