It borders Yantai to the west and the Yellow Sea to the east, and is the closest mainland Chinese city to South Korea (specifically, Chengshan to Yeonpyeongdo).

[6] Prehistorically, it was inhabited by Dongyi tribes,[7] and it was annexed into China proper by the state of Qi in 567 B.C.

Weihai experiences a continental climate, and it is climactically influenced by the surrounding Yellow Sea and the Siberian high.Weihai City is located in the mid latitudes and belongs to the northern temperate monsoon continental climate, with significant seasonal changes and monsoon advance and retreat.

Compared with inland areas at the same latitude, it has the characteristics of abundant rainfall, moderate annual temperature, and mild climate.

[16] Springtime warming and autumn cooling are delayed by one month, winds are generally high, and the average diurnal temperature variation throughout the year is small—at only 6.73 °C (12.1 °F).

Winters are cold and dry, but still warmer than inland regions at the same latitude; the average temperature in January is −0.9 °C (30.4 °F).

Summers are hot and humid, but much cooler than inland regions at similar latitude like the North China Plain (for about 5~10 °C) and August averages 24.7 °C (76.5 °F); the annual mean is 12.48 °C (54.5 °F).

More than two-thirds of the annual precipitation occurs from June to September, and there are nearly 2,540 hours of sunshine per year.

Due to its close proximity to South Korea, Weihai also has a large Korean business community and receives many Korean tourists.In recent years, Weihai has vigorously implemented its urban internationalization strategy and deepened its opening-up and cooperation with South Korea in all aspects according to the concept of "three exchanges, four ports, and five connections", becoming a model for local exchanges and cooperation between China and South Korea.

[23] Weihai Export Processing Zone (EPZ) was set up by the approval of the State Council on 27 April 2000.

[25] Weihai Torch Hi-Tech Science Park is a state-level development zone approved by the State Council in March 1991.