September weather forecast and climate
East Moriches, NY

Weather in September

September, the first month of the autumn, in East Moriches, is also an agreeable month, with average temperature varying between 71.4°F (21.9°C) and 65.3°F (18.5°C).

Temperature

In September, the average high-temperature slightly decreases, from a moderately hot 77.5°F (25.3°C) in August, to an agreeable 71.4°F (21.9°C). The average low-temperature, in September, is 65.3°F (18.5°C).

Humidity

In East Moriches, the average relative humidity in September is 75%.

Rainfall

Months with the least rainfall are January, February and September Rain falls for 12.4 days and accumulates 2.01" (51mm) of rain.

Snowfall

In East Moriches snow does not fall in May through October.

Ocean temperature

In September, the average ocean temperature in East Moriches is 69.1°F (20.6°C).
Note: Swimming in 69.1°F (20.6°C) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F (21°C).

Daylight

The average length of the day in East Moriches is 12.4h.

Sunshine

The average sunshine in September is 9.1h.

UV index

The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium health hazard from the exposure to the Sun's UV radiation for ordinary individuals.
Note: The average daily UV index of 5 transform into the following instructions:
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. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in September in East Moriches?

The average high-temperature, in September, is 71.4°F (21.9°C), while the average low-temperature is 65.3°F (18.5°C).

What is the average humidity in September in East Moriches?

The average relative humidity in September in East Moriches, New York, is 75%.

How much does it rain in East Moriches in September?

In East Moriches, New York, in September, during 12.4 rainfall days, 2.01" (51mm) of precipitation is typically accumulated.

What is the driest month in East Moriches?

Months with the least rainfall in East Moriches are January, February and September Rain falls for 12.4 days and accumulates 2.01" (51mm) of rain.

When it does not snow in East Moriches?

In East Moriches snow does not fall in May through October.

What is the ocean temperature in September in East Moriches?

In East Moriches, in September, the average water temperature is 69.1°F (20.6°C). Swimming in 69.1°F (20.6°C) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F (21°C).

What is the average length of the day in September in East Moriches?

In September, the average length of the day in East Moriches, New York, is 12.4h.

How many hours of sunshine does East Moriches have in September?

In East Moriches, New York, the average sunshine in September is 9.1h.

What is the UV index reading in September in East Moriches?

The average daily maximum UV index in September in East Moriches, New York, is 5. A UV Index reading of 3 to 5 represents a moderate health threat from the exposure to the Sun's UV rays.

Average temperature in September
East Moriches, NY

Average temperature in September - East Moriches, NY
  • Average high temperature in September: 71.4°F

The warmest month (with the highest average high temperature) is August (77.5°F).
The month with the lowest average high temperature is January (38.7°F).

  • Average low temperature in September: 65.3°F

Months with the highest average low temperature are July and August (71.4°F).
The coldest month (with the lowest average low temperature) is January (30.6°F).

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Average pressure in September
East Moriches, NY

Average pressure in September - East Moriches, NY
  • Average pressure in September: 30.05"

The month with the highest atmospheric pressure is November (30.09").
The month with the lowest atmospheric pressure is June (29.93").

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Average wind speed in September
East Moriches, NY

Average wind speed in September - East Moriches, NY
  • Average wind speed in September: 11.1mph

The windiest month (with the highest average wind speed) is January (14.5mph).
The calmest months (with the lowest average wind speed) are July and August (9.6mph).

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Average humidity in September
East Moriches, NY

Average humidity in September - East Moriches, NY
  • Average humidity in September: 75%

The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is November (71%).

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Average rainfall in September
East Moriches, NY

Average rainfall in September - East Moriches, NY
  • Average rainfall in September: 2.01"

The wettest month (with the highest rainfall) is December (3.31").
The driest months (with the least rainfall) are January, February and September (2.01").

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Average rainfall days in September
East Moriches, NY

Average rainfall days in September - East Moriches, NY
  • Average rainfall days in September: 12.4 days

The month with the highest number of rainy days is July (16 days).
The month with the least rainy days is February (9 days).

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Average snowfall in September
East Moriches, NY

Average snowfall in September - East Moriches, NY
  • Average snowfall in September: 0"

The month with the highest snowfall is January (1.5").
Months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in September
East Moriches, NY

Average snowfall days in September - East Moriches, NY
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (5.4 days).
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
East Moriches, NY

Average sea temperature in September - East Moriches, NY
  • Average sea temperature in September: 69.1°F

The best month for swimming (with the highest average sea temperature) is August (73.7°F).
The coldest month (with the lowest average sea temperature) is February (38°F).

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Average daylight in September /
Average sunshine in September
East Moriches, NY

Average daylight in September / Average sunshine in September - East Moriches, NY
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in September: 9.1h

Months with the most sunshine are July and August (Average sunshine: 10.8h).
The month with the least sunshine is February (Average sunshine: 4.8h).

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Average sunshine days in September
East Moriches, NY

Average sunshine days in September - East Moriches, NY
  • Average sunshine days in September: 16.1 days

The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is February (12.8 days).

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Average UV index in September
East Moriches, NY

Average UV index in September - East Moriches, NY
  • Average UV index in September: 5

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

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Average cloud cover in September
East Moriches, NY

Average cloud cover in September - East Moriches, NY
  • Average cloud cover in September: 31

The month with the most cloud cover is December (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 26).

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Average visibility in September
East Moriches, NY

Average visibility in September - East Moriches, NY
  • Average visibility in September: 6mi

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

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