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 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
Brightwaters records a mild change in average high-temperature during September, easing from a warm 78.4°F (25.8°C) in August to an agreeable 72.1°F (22.3°C). The September nights show a slight decrease to a mean low-temperature of 65.3°F (18.5°C).Humidity
In September, the average relative humidity is 74%.Rainfall
In Brightwaters, New York, during September, the rain falls for 13.5 days and regularly aggregates up to 2.56" (65mm) of precipitation. In Brightwaters, during the entire year, the rain falls for 153.2 days and collects up to 34.45" (875mm) of precipitation.Snowfall
In Brightwaters, New York, snow does not fall in April through September.Daylight
In September, the average length of the day in Brightwaters is 12h and 27min.On the first day of September, sunrise is at 6:20 am and sunset at 7:24 pm. On the last day of the month, sunrise is at 6:49 am and sunset at 6:36 pm EDT.
Sunshine
In Brightwaters, 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 vulnerability from unsafe exposure to UV radiation for the average person.Note: In September, an average UV index of 5 transforms into the following instructions:
Undertake precautions - It is suggested to shield oneself from sunburn. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Frequently asked questions
What are September temperatures in Brightwaters?
What is the average humidity in September in Brightwaters?
How many days does it rain in September in Brightwaters?
When it does not snow in Brightwaters?
Does it snow in Brightwaters in September?
How many hours of daylight does Brightwaters have in September?
What time are sunrise and sunset in September in Brightwaters?
How long on average sun shines in September in Brightwaters?
How high is the UV index in September in Brightwaters?
Average temperature in September
Brightwaters, NY
- Average high temperature in September: 72.1°F
The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is January (37.9°F).
- Average low temperature in September: 65.3°F
The month with the highest average low temperature is August (72°F).
The coldest month (with the lowest average low temperature) is January (30°F).
Average pressure in September
Brightwaters, 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
Brightwaters, NY
- Average wind speed in September: 10.1mph
The windiest month (with the highest average wind speed) is January (13.4mph).
The calmest month (with the lowest average wind speed) is July (8.6mph).
Average humidity in September
Brightwaters, NY
- Average humidity in September: 74%
The months with the highest relative humidity are May and June (77%).
The month with the lowest relative humidity is November (71%).
Average rainfall in September
Brightwaters, NY
- Average rainfall in September: 2.56"
The wettest month (with the highest rainfall) is July (3.86").
The driest month (with the least rainfall) is January (2.05").
Average rainfall days in September
Brightwaters, NY
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is July (17.9 days).
The month with the least rainy days is January (7.6 days).
Average snowfall in September
Brightwaters, NY
- Average snowfall in September: 0"
The month with the highest snowfall is March (1.97").
The months with the least snowfall are April, May, June, July, August and September (0").
Average snowfall days in September
Brightwaters, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (4.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Brightwaters, NY
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in September
Brightwaters, NY
- Average sunshine days in September: 14.7 days
The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is July (11.2 days).
Average UV index in September
Brightwaters, 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).
Average cloud cover in September
Brightwaters, NY
- Average cloud cover in September: 31
The month with the most cloud cover is December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in September
Brightwaters, 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).
Brightwaters, New York, USA
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