September sees the most Category 5 hurricanes, with over half of the total. This coincides with the climatological peak of the Atlantic hurricane season, which occurs in early September. September Category 5s reached their strengths in any of the Gulf of Mexico, Caribbean Sea, and open Atlantic. These places are where September tropical cyclones are likely to form. Many of these hurricanes are either Cape Verde hurricanes, which develop their strength by having a great deal of open water; or so-called Bahama busters, which intensify over the warm Loop Current in the Gulf of Mexico.