According to NOAA's National Hurricane Center, the hurricane season in the Atlantic Ocean begins on May 15 and ends November 30. It also runs from May 15 through November 30 in the eastern Pacific Ocean.
Hurricanes that form over the Atlantic often seriously impact the eastern coast of the United States, the Gulf of Mexico coastline and islands in the Caribbean. Pacific storms affect countries that border the ocean, Pacific islands and, very occasionally, the southern California coastline. Although these kinds of storms appear in other locations around the world, the term "hurricane" is used only when these weather patterns occur in the North Atlantic, Gulf of Mexico, Caribbean or eastern North Pacific. Other areas use the labels "typhoon" or "cyclone."