The 1943 Atlantic hurricane season marked the first deliberate reconnaissance aircraft flights into tropical cyclones. The season officially lasted from June 16 to October 31, which was, at the time, considered the most likely period for tropical cyclone formation in the Atlantic Ocean. A total of ten storms from 1943 are listed in the Atlantic hurricane database, and an eleventh system that affected Florida and Georgia has been identified as a probable tropical depression. The first system of the year, dubbed the "Surprise hurricane", caused severe damage throughout Texas and Louisiana in June, partially because information about its approach was censored in the fray of World War II; the storm caused 19 deaths and $17 million in damage. A major hurricane in mid-August produced hurricane-force winds in Bermuda, and several other tropical cyclones throughout the year resulted in strong winds there. In September, a hurricane impacted the western Gulf Coast of the United States, then a tropical storm struck the Mid-Atlantic. The two storms resulted in $419,000 and $20,000 in damage, respectively; one death was attributed to the latter system. In mid-October, a strong hurricane resulted in flooding and damage to crops throughout the Caribbean; after becoming post-tropical, it contributed to moderate impacts across Nova Scotia.

The years between 1940 and 1949 featured the 1940s North Indian Ocean cyclone seasons. Each season was an ongoing event in the annual cycle of tropical cyclone formation. The North Indian tropical cyclone season has no bounds, but they tend to form between April and December, peaks in May and November. These dates conventionally delimit the period of each year when most tropical cyclones form in the northern Indian Ocean. Below are the most significant cyclones in the time period. Because much of the North Indian coastline is near sea level and prone to flooding, these cyclones can easily kill many with storm surge and flooding. These cyclones are among the deadliest on earth in terms of numbers killed. On 27 April 1949, India Meteorological Department (IMD) became a member of the World Meteorological Organization after independence.