Ibaraki Prefecture Namegata has a Humid continental climate (Köppen Cfa) characterized by warm summers and cool winters with light snowfall.

The towns of Asō and Tamazukuri were created by establishing the modern municipalities system on April 1, 1889.

Namegata has a mayor-council form of government with a directly elected mayor and a unicameral city council of 18 members.

Regarding national politics, the city is part of Ibaraki 2nd district of the lower house of the Diet of Japan.

The economy of Namegata is primarily agriculture, with aquaculture on Lake Kasumigaura taking a predominant role.