Climate

Bahrain, like mainland Arabia, falls in the North African-Eurasian dry climate province. According to climate norms obtained from the Bahrain Civil Aviation Directorate, the climate is characterised by the prevalence of mild winters and very hot summers. The mean annual temperature ranges from 17.3° C to 34.1 °C (maximum 47.5 °C June, minimum January 2.8 °C). The amount of rainfall ranges between 0 and 17 mm per year. The highest monthly rainfall occurs in January (17 mm). The period extending from May to October is characterised by almost no rainfall (less than 0.05 mm).

Relative humidity is generally high. The highest mean daily maximum relative humidity is 88% (October), and the lowest mean daily minimum relative humidity is 40% (May). Evaporation values exceed those of rainfall during the summer months. The highest monthly mean evaporation value occurs in June (10.45 mm). This corresponds to the maximum mean daily hours of sunshine, which reach a value of 11.3 hours during that month.