Is New York City hot in September?
Days are typically warm at 24.7°C, while nights average 16.5°C.
United States · 1991–2020 normal
New York City in
September.
Typical September weather in New York City: 24.7°C by day, 16.5°C at night, 110 mm of rain over 7.2 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high24.7°C
Typical low16.5°C
Rain110 mm
Wet days7.2
In the year-round weather comparison, September scores 81 out of 100, the highest of the year. Daylight is calculated as 12 h 25 from latitude 40.71°. Open-water sea temperature is 21.4°C (15 km from the place centre).
September at a glance
What is New York City like in September?
Plain answers from the measured climate record—not a forecast or a promise about a particular trip.
Does it rain much?
The measured monthly average is 110 mm across about 7 wet days.
How much daylight is there?
There are about 12 h 25 between sunrise and sunset at mid-month, calculated from the place latitude.
Is September a good time to visit?
September is the strongest month in our year-round weather comparison.
Event window
Warm sea in September
The nearest open-water NOAA OISST 1991–2020 cell averages 21.4°C in September. A sheltered bay can run warmer than that open-water cell.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 5128581
- NOAA station
- USW00094728 · NY CITY CNTRL PARK
- Station distance
- 7.8 km from the place centre
- Coverage
- Strong coverage · 30 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.
Next step
Choose your month.
Then plan the details.
The weather comparison for New York City is based on climate evidence, not payments from travel companies. Flight, accommodation and activity links will be clearly labelled when they are added; there are no booking offers on this page today.
How travel partnerships will work