Geographic location, Topography, and Climate
Kish island has a surface area of 91 square kilometers, with an outer boundary of 40kms, and a nearly elliptical shape. It is located in the Persian Gulf 19kms from mainland Iran. The Island is positioned along the 1359km long Iranian coastline north of the Persian Gulf, at the first quarter from the Hormuz entrance to the Gulf. Its longitudinal and latitudinal positions are 2632 and 53.58 degrees respectively. The Island is 15.45kms long from west coast to the east coast. (the distance between Mariam Complex and Hoor field). Its maximum width extending from the southern shorelines to the northern shorelines is 7.5kms. (the distance between Gomrok Port and the lighthouse.) The island's surface is flat, lacking mountains or even high hills. Kish International Airport is built in the center on an elevated area 35-40 meters from the sea level. Its highest surface inclination extends from the airport to the shores near Shayan hotel.
Climate, Nature, and Geobotany
Kish, like the other Persian Gulf Islands, especially the islands in the Strait of Hormuz, is located on a narrow strip of tropical vegetation in the Northern Hemisphere, with the Persian plateau to the north and the Arabian Peninsula to the south. In addition to its special geographic and climatic attributes, Kish Island, like other nearby islands, such as Farrow, Hindorabi, Shatuar and Lavan and even Gheshm, is under the sway of the semi-equatorial climate dominating this band of vegetation.
Since vital climates are influenced by the combined effects of rainfalls and humidity and are measured by the ratio of the size of annual rainfalls in millimeters to the degree of temperatures is less than 2 to 1. According to this measure, Kish's climate is considered to be a very dry semi equatorial climate. For an 8 year span of time, the median annual rainfall in Kish has been 145mm (54% in winter, 28% autumn and 14% in summer) and the annual temperature 26.6 Celsius. The relative atmospheric humidity in Kish makes it like a sea island except in cold seasons. The humidity is about 60% most of the year. In the months of October to April, Kish's weather is mild, ranging between 18 to 25 Celsius. The statistical data in the Kish free zone's archives show that the island's temperature varies form very hot to moderately hot, accompanied by relatively high humidity often interspersed by heavy rains of short durations in certain seasons. With the exception of some southeastern coastal areas and a few other islands in the Persian Gulf, Kish Island has the longest sunny hours in the region which is roughly 3100 hours a year. Based on climatological classification and general weather conditions and nearness to the Tropic of Cancer and exposure to high tropical pressure system and being in the midst of hot and shallow waters, the island tends to be hot and humid most of the year.