According to the
United States Census Bureau, the town has a total area of , of which is land and , or 19.04%, is water. Most of Falmouth, like the rest of Cape Cod, sits on glacial sands composed of glacial
outwash deposits. However, the soil in the southwestern part of the town, consisting of
moraine deposits, is more rocky and dense, like the rest of
New England, and many
glacial erratics are scattered about, having been dropped by the retreating glaciers. The climate is temperate marine. There is no exposed bedrock. Rainfall is evenly distributed throughout the year and averages per month. Falmouth lies on the southwestern tip of Cape Cod. It is bordered by
Bourne and
Sandwich to the north,
Mashpee to the east,
Vineyard Sound to the south, and
Buzzards Bay to the west. At its closest point, Falmouth is approximately from
Nonamesset Island, the easternmost island of the town of
Gosnold and the
Elizabeth Islands. It is approximately north-northwest of
Martha's Vineyard, the closest land to the island. Falmouth is approximately south of the
Bourne Bridge, west of
Barnstable, and south-southeast of
Boston. Falmouth's topography is similar to the rest of Cape Cod's, with many small ponds, creeks, and
inlets surrounded by the
pines and
oaks of the Cape and often rocky beachfront. Falmouth's southern shore is notable for a series of ponds and rivers spaced very closely together, all of which travel some distance into the town. These include, from west to east, Falmouth Inner Harbor, Little Pond, Great Pond (which leads to the Dexter and
Coonamesset rivers), Green Pond, Bourne's Pond, Eel Pond (which leads to the
Childs River), and
Waquoit Bay, which lies along the Mashpee town line. The Buzzards Bay side of the town is primarily
bays divided by necks, peninsulas connected to land by
isthmi. The largest inlet is Megansett Cove along the Bourne town line. The Buzzards Bay shore of Falmouth is punctuated by a number of hamlets, including, from north to south, Megansett,
New Silver Beach, Old Silver, Chappaquoit, Sippewisset, Quissett, and
Woods Hole. The highest point in Falmouth is Telegraph Hill, also called Falmouth Hill, at an elevation of 157 feet. ==Climate==