Long Island in september: average Weather, Temperature and Climate
Weather in Long Island in september 2025
The weather in Long Island in september comes from statistical datas on the last years. You can view the weather statistics for all the month, but also by clicking on the tabs for the beginning, the middle and the end of the month.
Average weather throughout september
tolerable weather UV index: 7
Weather at 6am
85°F
Moderate rain at times
37% of time
33%
12%
12%
Weather at 12pm
85°F
Moderate rain at times
34% of time
29%
19%
14%
Weather at 6pm
85°F
Moderate rain at times
33% of time
29%
19%
16%
Weather at 3am
85°F
38%
38%
14%
7%
Evolution of daily average temperature and precipitation in Long Island in september
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Long Island in september.
The climate of Long Island in september is tolerable
the weather in Long Island in september is wet (with 7.7in of precipitation over 11 days). The weather is worst than the previous month since in august there is an average of 7.6in of precipitation over 9 days.
The climate quite pleasant there september. The thermometer averaged maximum of 85°F. The minimum is 83°F. Thus, the mean temperature average on this month of september in Long Island is 85°F. These temperatures are far removed from those records observed in Long Island in september with a maximum record of 86°F in 2010 and a minimum record of 68°F in 2020.
Day length in Long Island in september is 12:16. The sun rises at 05:47 and sunset is at 18:03.
With proper weather, this month is okay (but not the best) to go in this city.
Long Island: another month?
If you can push the dates of your trip to Long Island forward, the month of october has a better weather forecast than september. more information
September: another location in the Bahamas?
If you want to go to the Bahamas in september, there are destinations with better weather than Long Island:
In september, Snug Corner and Mayaguana have good weather.
Seasonal average climate and temperature of Long Island in september
Check below seasonal norms These datas are generated from the weather statements earlier years of the month of september.
| September | |||||
| Outside temperature | |||||
| Average temperature | 85°F | ||||
| Highest temperature | 85°F | ||||
| Lowest temperature | 83°F | ||||
| Highest record temperature | 86°F (2010) | ||||
| Lowest record temperature | 68°F (2020) | ||||
| Number of days at +86°F | 2 day(s) (7%) | ||||
| Number of days at +65°F | 30 day(s) (100%) | ||||
| Sea temperature | |||||
| Average sea temperature | 85°F | ||||
| Lowest sea temperature | 84°F | ||||
| Highest sea temperature | 87°F | ||||
| Wind | |||||
| Wind speed | 22km/h | ||||
| Wind temperature | 85°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 7.7in | ||||
| Number of days with rainfall | 11 day(s) (37%) | ||||
| Record daily rainfall | 3.5in (2019) | ||||
| Other climate data | |||||
| Humidity | 77% | ||||
| Visibility | 9.43km | ||||
| Cloud cover | 40% | ||||
| UV index | 7 | ||||
| Daily sunshine hours | 12 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 05:47 | ||||
| Time of sunset | 18:03 | ||||
| Length of day | 12:16 | ||||
| Our opinion about the weather in september | |||||
| Our opinion at whereandwhen.net | tolerable | ||||
How was the weather last september?
Here is the day by day recorded weather in Long Island in september 2024:
83°F to 85°F
85°F to 85°F
85°F to 85°F
85°F to 85°F
85°F to 85°F
83°F to 85°F
85°F to 85°F
85°F to 85°F
85°F to 85°F
85°F to 85°F
83°F to 85°F
83°F to 85°F
83°F to 85°F
83°F to 85°F
85°F to 85°F
85°F to 86°F
83°F to 85°F
83°F to 85°F
83°F to 85°F
83°F to 85°F
83°F to 85°F
83°F to 83°F
81°F to 83°F
81°F to 83°F
83°F to 85°F
83°F to 85°F
85°F to 85°F
83°F to 85°F
83°F to 85°F
83°F to 85°F
Map: other cities in the Bahamas in september
Cities near Long Island:
| Dean’s Blue Hole in september | tolerable weather |
| Exumas in september | tolerable weather |
| Cat Island in september | tolerable weather |
| Snug Corner in september | good weather |
| Little San Salvador in september | tolerable weather |
| Big Major Cay in september | tolerable weather |
| Eleuthera in september | tolerable weather |
| Mayaguana in september | good weather |
| Inagua in september | tolerable weather |
| Pink Sands Beach in september | tolerable weather |
| Harbour Island in september | tolerable weather |
| Paradise Island in september | tolerable weather |
Click over cities on the map for information about the weather in september.
Long Island
perfect weather
good
tolerable
bad
very bad
Weather data for Long Island in september:
Weather data for Long Island for september are derived from an average of the weather forecast since 2009 in Long Island. There is a margin of error and these forecasts are to be considered as general information only. The weather in Long Island can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Long Island.