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The research aims to uncover the changing climatic characteristics of the Iraqi regional water region as a result of global climate change and as a result of the lack of climatic studies on the region. All commercial and oil ports are in this region addition to that it is the point of a permanent border dispute between neighboring countries as well as its importance as the only marine fisheries for Iraq. This study based on the data got from Basra oil port and Boubyan stations for the period from 1981 to 2018 as well as from the analysis of time series and its direction as shown in the following results. There is a general trend of high temperature rise, as it recorded a positive change for all months of the study period. The presence of a general trend for the increase in the minimum temperatures in it recorded a positive change for all months of the study period. It is noted that the changes in the lower temperatures were greater than those of the great ones due to climate change in which the temperature changes. It reflects negatively on the marine environment, especially fish migration, decreasing and extinction of some species. There is a variation in the direction of wind speeds between the two stations, as Boubyan station recorded positive change rates for all months of the year, while it tended to decrease during January and April in the oil port. Despite the occurrence of stations in the study area within a coastal and water environment, it recorded its general trend of low relative humidity rates for all months, and this indicates an increase in air dryness caused by an increase in the frequency of dry northwest winds and a decrease repeated wet naughty south winds. The decrease of rainfall amounts on the stations of the region .The presence of a trend for a decrease in the frequency of dust storms within the study area, as the amount of its annual change in Boubyan Station reached storms, which is of great importance to the maritime transport sector. [ABSTRACT FROM AUTHOR]