New Hampshire is a state in the New England region of the northeastern United States.
It is bounded by Quebec, Canada to the north and northwest; Maine and the Atlantic Ocean to the east; Massachusetts to the south; and Vermont to the west. New Hampshire's major regions are the Great North Woods, the White Mountains, the Lakes Region, the Seacoast, the Merrimack Valley, the Monadnock Region, and the Dartmouth-Lake Sunapee area. New Hampshire has the shortest ocean coastline of any U.S. state, with a length of 18 miles
Major rivers include the 110-mile Merrimack River, which bisects the lower half of the state north-south and ends up in Newburyport, Massachusetts. Its major tributaries include the Contoocook River, Pemigewasset River, and Winnipesaukee River. The 410-mile Connecticut River, which starts at New Hampshire's Connecticut Lakes and flows south to Connecticut, defines the western border with Vermont. The largest lake is Lake Winnipesaukee, which covers 72 square miles in the east-central part of New Hampshire. It is the second-most-forested state in the country, after Maine, in terms of percentage of land covered by woods.
New Hampshire has a changeable climate, with wide variations in daily and seasonal temperatures. Summers are short and cool, winters long and cold.