Weather in September
September in
Bronx County,
New York, ushers in the long-awaited respite from summer's intense heat. The sea temperature reduces to a moderate 70.1°F (21.2°C), portending the return of the cool season. The air starts to abstain from the summer heat, favoring a more temperate, comfortable climate. Daylight yields to longer evenings, a tangible indication of the changing season. September carries the essence of autumn, with its noticeably cooler weather and diminishing daylight.
Ocean temperature
In September, the average ocean temperature is 70.2°F (21.2°C).
Note: For most people, swimming in water at 70.2°F (21.2°C) is not a pleasurable experience. Breathing control gets harder as the water temperature descends from 69.8°F (21°C) to 59°F (15°C).
Daylight
In September, the average length of the day is 12h and 27min.
On the first day of the month, sunrise is at 6:23 am and sunset at 7:27 pm. On the last day of September, sunrise is at 6:51 am and sunset at 6:38 pm EDT.