Most of Delaware is situated on the Atlantic Coastal Plain, and the state has about 45 kilometers of coastline along the Atlantic Ocean. The northern tip of the state is on the edge of the wide plateau known as the Piedmont. Major rivers in the state are the Delaware River and the Christina River. The state's population is around 670,000. Climate Delaware's proximity to the Atlantic Ocean gives the state a very humid climate.
Summers can be very hot and winters are usually mild.
Average temperatures in the northern part of the state range from -4 to 6 C in January and from 18 to 31 C in July. In the southern part of the state, average temperatures range from -0.5 to 8 C in January and from 21 to 29 C in July. Delaware averages about 117 cm of precipitation annually. Wilmington is the main site for Delaware's cultural activities. The city has both a symphony orchestra and a drama league.