Hamadan city, capital of Hamadan prov. West of Iran, at the foot of Mt. Alwand. Located at an altitude of 6,000 ft (1,829 m), it is the trade center for a fertile farm region where fruit and grain are grown.
The climate here is mild, and generally warm and temperate. The rain in Hamadan falls mostly in the winter, with relatively little rain in the summer. In Hamadan, the average annual temperature is 11.3 °C. The rainfall here averages 384 mm.
Precipitation is the lowest in July, with an average of 1 mm. In April, the precipitation reaches its peak, with an average of 76 mm. At an average temperature of 23.6 °C, August is the hottest month of the year. At 0.6 °C on average, February is the coldest month of the year.
Hamadān is one of the western provinces of Persia, situated to the southwest of Tehran .The city of Hamadān (the capital of the province) is located at an altitude of 1,645 m on the eastern slope of the Alvand massif . The province of Hamadān is bounded, clockwise, by the provinces of Zanjān and Qazvin to the north, the Markazi (Central) Province to the east, the province of Lorestān to the south, and the provinces of Kermānšāh and Kordestān to the west.
Hamadān is a mountainous region, located on the eastern flanks of the Zagros range, which stretches from the northwest to the southeast of Persia. The highest point, Alvand Kuh, reaches an altitude of 3,580 m above sea level. A mass of granite and diorite, Alvand Kuh extends across the southern and eastern parts of the city of Hamadān and is its most prominent landmark. There are at least 12 other peaks in the Alvand range of more than 3000 m altitude. The lowest point of the province, where the river Gāmāsiāb flows out of the governorship of Nahāvand, descends to the altitude of 1,420 m .
Other major mountains include Mount Garu (3,316 m) in the Halilān rural district south of Nehāvand, forming the natural frontier between Hamadān and Lorestān; Mount Lašgardar (2,928 m) to the southeast of Malāyer; Mount Ḵāngurmaz (2,868 m) in the Korzānrud rural district, northwest of Tuyserkān; Mount Siāh-darra (2,818 m) northwest of Tuyserkān; Mount Safid Kuh (2,475 m) in the rural district of Darjazin-e ʿOlyā, northeast of Hama-dān; Mount Garmā and Mount Sarmā in Malāyer; Mount Almuqulāḵ (2,997 m) between Asadābād and Bahār, 36 km from Hamadān; and Mount Buqāti in the Sard-rud district of Kabudar-āhang, about 85 km northeast of Hamadān. Finally, the Ḵaraqān range forms the natural frontier between Hamadān and the provinces of Qazvin and Zanjān.