September weather forecast
Montauk, NY

The shores of The Atlantic Ocean with a far view of the Montauk Point Lighthouse, in Montauk, New York
The shores of The Atlantic Ocean with a far view of the Montauk Point Lighthouse, in Montauk, New York

Weather in September

The first month of the autumn, September, is still a pleasant month in Montauk, New York, with temperature in the range of an average low of 64.9°F (18.3°C) and an average high of 69.6°F (20.9°C).

Temperature

In Montauk, the average high-temperature in September is almost the same as in August - an agreeable 69.6°F (20.9°C). The average low-temperature, in Montauk, is 64.9°F (18.3°C).

Humidity

In Montauk, the average relative humidity in September is 77%.

Rainfall

The month with the least rainfall is September, when the rain falls for 10.7 days and typically collects 1.77" (45mm) of precipitation.

Snowfall

In Montauk, snow does not fall in May through November.

Ocean temperature

In September, the average ocean temperature is 67.6°F (19.8°C).
Note: For swimming, a surface water temperature of 67.6°F (19.8°C) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 69.8°F (21°C).

Daylight

In September, the average length of the day is 12h and 28min.
On the first day of September in Montauk, New York, sunrise is at 6:14 am and sunset at 7:20 pm. On the last day of the month, sunrise is at 6:43 am and sunset at 6:31 pm EDT.

Sunshine

The average sunshine in September in Montauk is 8.9h.

UV index

The average daily maximum UV index in September in Montauk, New York, is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: In September, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the temperature in September in Montauk?

In September, in Montauk, New York, the average high-temperature is 69.6°F (20.9°C), and the average low-temperature is 64.9°F (18.3°C).

What is the average humidity in September in Montauk?

In Montauk, New York, the average relative humidity in September is 77%.

What is the driest month in Montauk?

September is the month with the least rainfall. Rain falls for 10.7 days and accumulates 1.77" (45mm) of precipitation.

How much does it rain in Montauk in September?

In Montauk, in September, during 10.7 rainfall days, 1.77" (45mm) of precipitation is typically accumulated.

When it does not snow in Montauk?

In Montauk, New York, snow does not fall in May through November.

What is the ocean temperature in September in Montauk?

In September, the average ocean temperature in Montauk is 67.6°F (19.8°C). For most, swimming in 67.6°F (19.8°C) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 69.8°F (21°C) to 59°F (15°C).

What is the average length of the day in September in Montauk?

In Montauk, the average day length in September is 12h and 28min.

What time are sunrise and sunset in September in Montauk?

On the first day of September in Montauk, New York, sunrise is at 6:14 am and sunset at 7:20 pm. On the last day of the month, sunrise is at 6:43 am and sunset at 6:31 pm EDT.

How long on average sun shines in September in Montauk?

The average sunshine duration in September in Montauk is 8.9h.

What is the UV index intensity in September in Montauk?

The average daily maximum UV index in September in Montauk is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Montauk, NY

Average temperature in September - Montauk, NY
  • Average high temperature in September: 69.6°F

The warmest month (with the highest average high temperature) is August (74.8°F).
The month with the lowest average high temperature is January (38.8°F).

  • Average low temperature in September: 64.9°F

The month with the highest average low temperature is August (70.9°F).
The coldest month (with the lowest average low temperature) is January (31.1°F).

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Average pressure in September
Montauk, NY

Average pressure in September - Montauk, NY
  • Average pressure in September: 30.05"Hg

The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in September
Montauk, NY

Average wind speed in September - Montauk, NY
  • Average wind speed in September: 12.9mph

The windiest month (with the highest average wind speed) is January (16.7mph).
The calmest month (with the lowest average wind speed) is July (11.1mph).

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Average humidity in September
Montauk, NY

Average humidity in September - Montauk, NY
  • Average humidity in September: 77%

The month with the highest relative humidity is June (83%).
The month with the lowest relative humidity is November (73%).

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Average rainfall in September
Montauk, NY

Average rainfall in September - Montauk, NY
  • Average rainfall in September: 1.77"

The wettest month (with the highest rainfall) is December (4.02").
The driest month (with the least rainfall) is September (1.77").

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Average rainfall days in September
Montauk, NY

Average rainfall days in September - Montauk, NY
  • Average rainfall days in September: 10.7 days

The month with the highest number of rainy days is July (15.7 days).
The month with the least rainy days is January (9.9 days).

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Average snowfall in September
Montauk, NY

Average snowfall in September - Montauk, NY
  • Average snowfall in September: 0"

The month with the highest snowfall is March (2.24").
The months with the least snowfall are May, June, July, August, September, October and November (0").

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Average snowfall days in September
Montauk, NY

Average snowfall days in September - Montauk, NY
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (5.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average sea temperature in September
Montauk, NY

Average sea temperature in September - Montauk, NY
  • Average sea temperature in September: 67.6°F

The best month for swimming (with the highest average sea temperature) is August (70.3°F).
The coldest month (with the lowest average sea temperature) is February (37.9°F).

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Average daylight in September /
Average sunshine in September
Montauk, NY

Average daylight in September / Average sunshine in September - Montauk, NY
  • Average daylight in September: 12h and 28min

The month with the longest days is June (Average daylight: 15h and 5min).
The month with the shortest days is December (Average daylight: 9h and 17min).

  • Average sunshine in September: 8h and 54min

The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 4h and 42min).

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Average sunshine days in September
Montauk, NY

Average sunshine days in September - Montauk, NY
  • Average sunshine days in September: 17.7 days

The month with the most sunshine days is September (17.7 days).
The month with the least sunshine days is February (12.4 days).

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Average UV index in September
Montauk, NY

Average UV index in September - Montauk, NY
  • Average UV index in September: 5

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March and December (UV index 2).

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Average cloud cover in September
Montauk, NY

Average cloud cover in September - Montauk, NY
  • Average cloud cover in September: 32

The month with the most cloud cover is December (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 27).

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Average visibility in September
Montauk, NY

Average visibility in September - Montauk, NY
  • Average visibility in September: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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