Brookhaven is centrally located on Long Island and extends from the North Shore to the South Shore. Summers are typically warm and humid while the winters are chilly. The Atlantic Ocean brings sea breezes that temper the summer heat and limit the frequency and severity of thunderstorms. Long Island has a moderately sunny climate and averages 2,400 to 2,800 hours of sunshine annually. Due to the coastal location, winter temperatures are significantly milder than most of the state. January is the coldest month with an average temperature anywhere between 30 to 35 degrees. While the warmest month is July with average temperatures ranging from 70 to 80 degrees. There is approximately 3-4 inches of precipitation per month.
According to the United States Census Bureau, Brookhaven has a total area of 531.5 square miles of which, 259.3 squares miles is land and 272.2 square miles is water.
Brookhaven has rivers that are both scenic and recreational. From fishing, canoeing, kayaking or simply viewing are what residents can enjoy and appreciate.
Brookhaven Town is the result of glacier deposits and erosions that began fifteen million years ago. The glaciers also created large holes, know as "kettleholes", which filled with water forming Lake Ronkonkoma, Artist Lake, Spring Lake and others. Lake Ronkonkoma, which is he largest lake in Suffolk County, has a history of being haunted especially since for many decades, someone drowned there every year.
The North Shore and South Shore are used to describe two parts of Long Island. The North Shore tends to be more billy and rocky where the South Shore is flat and sandy. Bald Hill in Farmingville marks where the glacier which formed Long Island stopped.
One of the defining characteristics of Brookhaven communities is the open space and environmental resources that surround them. A large part of Brookhaven consists of the Pine Barrens. The Pine Barrens is an undeveloped area that is nearly five (5) times the size of Manhattan and is one of the most expansive nature preserves in New York State. Suffolk County's primary source of drinking water come from a huge freshwater aquifer that the Pine Barrens sits over.
The Town of Brookhaven, in coordination and conjunction with Suffolk County Fire Rescue and Emergency Services is prepared to provide direction, control and coordination of emergency management activities. Part of their responsibility includes guidance on declaring a State of Emergency and the issuing of emergency order. There are many helpful links on the Town's website to help prepare for the possibility of a hurricane or other natural disaster.