Normal weather for Montauk in September
It's warm in September in Montauk with an average temperature of 24°C. Temperatures this month range from a low of 20°C to a high of 28°C. At night, you can expect temperatures between 14°C and 21°C.
In September, there is an average of 171 mm of precipitation, spread over 15 days. The wind speed is around 3 Bft, mostly coming from the Southeast.
Montauk in September |
London | ||
|---|---|---|---|
 Average Temperature |
24°C | 20°C | |
 High Temp |
28°C | 22°C | |
| Low Temp |
20°C | 17°C | |
 Total Precipitation |
171 mm | 44 mm | |
| Rainy Days |
15 days | 8 days | |
Start of September
The month of September starts in Montauk with warm temperatures, averaging around 26°C during the day and nights close to 20°C. You can expect regular precipitation, but there’s also a chance for some sunny days in the first days of the month.
Since temperatures can differ between day and night, it’s a good idea to dress in layers. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal for the day. In the evening and morning, a T-shirt, light trousers or skirt, and a light jacket are recommended.
Mid-September
By mid-September, the average daytime temperature drops to around 24°C, with nights close to 19°C. There might be a few showers during this period, but plenty of dry days with sunshine too.
Temperatures vary between day and night, so it’s smart to wear layers. A T-shirt, light trousers or skirt, and a light jacket are perfect for daytime. For the evening and morning, a shirt, maybe a light cardigan, and light trousers will do.
End of September
By the end of September, the average daytime temperature in Montauk will be around 22°C, with nights close to 17°C. There’s regular precipitation, but with a bit of luck, you’ll also get some dry and sunny days.
As it gets cooler in the evening, it’s best to wear layers. A T-shirt, light trousers or skirt, and a light jacket are perfect for daytime. For the evening and morning, a shirt, maybe a light cardigan, and light trousers will do.
Discover cheap trips to Montauk 
Water temperature
The water temperature at Montauk is 21°C this month. Pleasant for a swim.
UV index
The UV index is a maximum of 6 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.
Is September a good time to visit Montauk?
After some sun? Then September isn’t the best time to be in Montauk. The temperature is pleasant, but there’s too much chance of rain this month.
Temperature records for Montauk in September
With 33°C, Montauk hit the highest temperature in the last 10 years in September 2023. The lowest daytime temperature in this month was 16°C in 2018. The extreme night temperatures ranged from a low of 6°C to a high of 24°C.
Check out the climate of Montauk for all months and discover the best travel time
August
Plan your next holiday
Don’t miss the best holiday deals for Montauk and see what our partners have for you.
Daily Temperature in September in Montauk
This chart shows the average daily temperatures, both day and night, for each day in September in Montauk, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in September in Montauk
The chart below shows the average daily precipitation in September for Montauk, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for September, you can expect around 15 days of rain in Montauk.
Daily UV Index in September in Montauk
This chart shows the average daily UV index in September in Montauk, 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.
Temperature in September in Montauk Over the Years
This chart shows the average temperature in September in Montauk, measured in degrees Celsius, over the past years.
Total Precipitation in September in Montauk Over the Years
This chart shows the average precipitation in September in Montauk, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in September for Montauk
Click on a specific day in September for detailed info on the typical weather on that day in Montauk. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Montauk
Have you been to Montauk in September?
Share your weather experience in September in Montauk.
Average Weather in Montauk by Month
Click on a month below to see detailed weather info for Montauk. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
