New York weather in September 2025
New York weather in September 2025
Day
24 °C
Night
14 °C
Sea
20 °C
Precipitation
100 mm
in month
Rainy days
8 days
in month
Daylight
12 hours
average
Sunshine
7 hours
average
Humidity
73 %
Day
24 °C
Night
14 °C
Sea
20 °C
Precipitation
100 mm
in month
Rainy days
8 days
in month
Daylight
12 hours
average
Sunshine
7 hours
average
Humidity
73 %
Overview: New York
Travel information
Weather charts for New York
We make the most from 40 years of historical weather data to predict the best weather conditions.
Deciding on where to go for a holiday is hard sometimes. Get inspired by the most popular destinations.
We aggregate data from combining multiple weather sources to ensure accuracy of the highest order.
Find more destinations like this
Activities in New York
Destinations in New York
Destinations with similar weather to New York
Weather overview and FAQs
Weather overview
In New York in September, the average air temperature ranges from 24 °C (75 °F) during the day to 14 °C (58 °F) at night. There are 8 days of rain on average, where the rainfall is 100 mm (3.94 in).
Are there good conditions to visit in New York in September?
There are good conditions for visiting in New York in September. There are only 8 days of rain in the whole month, so you can leave your umbrella at home. There are some people, who may feel a slight chill at 24 °C (75 °F), but others will feel perfectly fine. A sea temperature of 20 °C (68 °F) can seem colder to some, but others will call it refreshing. The temperature of 14 °C (58 °F) at night may make it better to dine inside or to put on more clothes for a dinner outside.
What temperature can I expect during the day in New York in September?
In New York in September, the average daily temperatures will be 24 °C (75 °F). A comfortable temperature for most people, where it is neither too cold nor too hot, and a large number of activities can be carried out comfortably, including sunbathing by the water. Lighter clothing will be suitable - shorts, skirts, t-shirts, jackets; a light sweater and long trousers may also be useful.
How many rainy days can I expect in September in New York?
In New York in September, we can expect 8 days to be rainy, that is, days when precipitation exceeds 2 mm (0.08 in). Converted to days of the week, this means that it will occur on an average of 1.9 days of the week, or in general - 28 % days.
What is the sea temperature in September in New York?
The temperature of the sea in New York in September is 20 °C (68 °F). The sea at this temperature is quite cold, but it is already possible to stay in it for a long time and it is pleasantly refreshing on hot, steamy days.
What is the air temperature in September in New York at night?
The average night temperature in New York in September is 14 °C (58 °F). Nights can be cooler, morning running can be refreshing but choose appropriate clothing, evening outdoor sitting can be pleasant but you can also be cold.
What is the rainfall intensity in September in New York?
In September in New York, there is 100 mm (3.94 in) rainfall, which means on average 3 mm (0.13 in) rainfall per day.
How many sunny hours can I expect in September in New York?
There is an average length of sunshine of 7 hours per day in New York in September.
How long is the day (from dawn till dusk) in New York in September?
The length of daylight in New York in September is 12 hours.
Is September part of the wet season in New York?
No, there is no wet season in September in New York - you can expect 8 days of rain during the month.
Is September part of the dry season in New York?
No, September is not a dry month in New York, expect rain approximately 8 days in a month.
Is the sea in New York warmer in September than in August?
No, the sea temperature in New York in September is not higher than in August.
How windy is New York in September?
In New York in September, there will be an average wind scale of 4.
What is the humidity in September in New York?
In September in New York, expect humidity around 73 %.
Is the weather in New York warmer in September than in August?
No, in New York in September the temperature is not higher than in August.
Is New York rainier in September than in August?
No, in New York in September it does not rain more than in August.