BahamasThe weather in September in Long Island
It's warm in September in Long Island with an average temperature of 29°C. Temperatures this month range from a low of 29°C to a high of 30°C. At night, you can expect temperatures between 28°C and 28°C.
Looking for sun? September isn’t a good month to be in Long Island. The temperature is nice, but there’s too much chance of rain.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in September for Long Island, Bahamas. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 31°C in 2023, Long Island reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 27°C in 2019. The extreme nighttime temperatures ranged from a lowest recorded value of 24°C to a highest value of 29°C.
Rainfall amount
In September, there is an average of 106 mm of precipitation, spread over 13 days. The wind speed is around 4 Bft, mostly coming from the East.
Daily weather in September for Long Island
Click on any day in September to get detailed info about the usual weather on that day in Long Island. Check out the historical temperatures and precipitation over the past 10 years on this day.
September weather comparison
| Long Island | New York | |
|---|---|---|
| Average temperature | 29°C | 27°C |
| Max. temperature | 30°C | 31°C |
| Min. temperature | 28°C | -5°C |
| Total precipitation | 106 mm | 57 mm |
| Rainy days | 13 days | 9 days |
Start of September
The month of September starts in Long Island with hot temps, averaging around 30°C during the day and nights around 28°C.
Mid September
By mid-September, daytime temps stay steady at around 30°C, with nights around 28°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
End of September
By the end of September, the average daytime temperature in Long Island is around 29°C, while nighttime temps are about 28°C. Expect regular precipitation, but if you’re lucky, you’ll also get some dry and sunny days.
UV index
The UV index is a maximum of 9 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
The hurricane season in Long Island runs from June to November.
Check out the climate of Long Island for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in September in Long Island, Bahamas. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in September in Long Island
Temperature in September in Long Island over the years
Precipitation charts
These charts show the average amount of precipitation in September in Long Island, Bahamas. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in September in Long Island
Total precipitation in September in Long Island over the years
Daily UV index in September in Long Island
This chart shows the average daily UV index in September in Long Island, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in September in Long Island
Have you been to Long Island in September?
Share your weather experience in September in Long Island.
Average weather in Long Island by month
Click on a month below to see detailed weather info for Long Island. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.