Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average sea temperature in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The beginning of September brings a minor change in the average high-temperature, shifting from a moderately hot 79.2°F (26.2°C) in August to an agreeable 72.5°F (22.5°C). The nights of September are characterized by an average low-temperature of 64.2°F (17.9°C), subtly descending from daytime highs.Humidity
In Oyster Bay Cove, the average relative humidity in September is 73%.Rainfall
In September, the rain falls for 12.8 days. Throughout September, 2.52" (64mm) of precipitation is accumulated. In Oyster Bay Cove, New York, during the entire year, the rain falls for 152.5 days and collects up to 35.04" (890mm) of precipitation.Snowfall
May through October are months without snowfall in Oyster Bay Cove.Ocean temperature
In Oyster Bay Cove, the average seawater temperature in September is 70.2°F (21.2°C).Note: For most people, swimming in water at 70.2°F (21.2°C) is not a pleasurable experience. Breathing control gets harder as the water temperature descends from 69.8°F (21°C) to 59°F (15°C).
Daylight
The average length of the day in September is 12h and 27min.On the first day of September, sunrise is at 6:21 am and sunset at 7:26 pm. On the last day of the month, sunrise is at 6:50 am and sunset at 6:37 pm EDT.
Sunshine
In Oyster Bay Cove, the average sunshine in September is 9h.UV index
The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum high UV index of 5 in September translates into the following recommendations:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. Around midday, solar radiation is most harmful; hence, exposure should be limited. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Take heed! Reflections of sand and water make the Sun's UV rays stronger.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Oyster Bay Cove in September?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
What is the ocean temperature in September?
What is the average length of the day in September in Oyster Bay Cove?
When are sunrise and sunset in September?
How many hours of sunshine does Oyster Bay Cove have in September?
What is the UV index reading in September?
Average temperature in September
Oyster Bay Cove, NY
- Average high temperature in September: 72.5°F
The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (37°F).
- Average low temperature in September: 64.2°F
The month with the highest average low temperature is July (71.2°F).
The coldest month (with the lowest average low temperature) is January (28.6°F).
Average pressure in September
Oyster Bay Cove, NY
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Oyster Bay Cove, NY
- Average wind speed in September: 9.1mph
The windiest month (with the highest average wind speed) is January (12.2mph).
The calmest month (with the lowest average wind speed) is July (7.8mph).
Average humidity in September
Oyster Bay Cove, NY
- Average humidity in September: 73%
The months with the highest relative humidity are May and June (76%).
The month with the lowest relative humidity is November (71%).
Average rainfall in September
Oyster Bay Cove, NY
- Average rainfall in September: 2.52"
The wettest month (with the highest rainfall) is July (4.09").
The driest month (with the least rainfall) is January (2.09").
Average rainfall days in September
Oyster Bay Cove, NY
- Average rainfall days in September: 12.8 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (8.1 days).
Average snowfall in September
Oyster Bay Cove, NY
- Average snowfall in September: 0"
The month with the highest snowfall is March (1.77").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Oyster Bay Cove, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (4.9 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in September
Oyster Bay Cove, NY
- Average sea temperature in September: 70.1°F
The best month for swimming (with the highest average sea temperature) is August (74.1°F).
The coldest month (with the lowest average sea temperature) is February (39.9°F).
Average daylight in September /
Average sunshine in September
Oyster Bay Cove, NY
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 9h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in September
Oyster Bay Cove, NY
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is July (11.4 days).
Average UV index in September
Oyster Bay Cove, 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, November and December (UV index 2).
Average cloud cover in September
Oyster Bay Cove, NY
- Average cloud cover in September: 33
The month with the most cloud cover is December (Cloud cover 48).
The months with the least cloud cover are July and August (Cloud cover 29).
Average visibility in September
Oyster Bay Cove, 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).
Oyster Bay Cove, New York, USA
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