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
The onset of September aligns with a soft reduction in the average high-temperature, gently falling from a moderately hot 79.7°F (26.5°C) in August to a pleasant 72.1°F (22.3°C). Throughout September, an average nighttime temperature of 52.9°F (11.6°C) is experienced in Southampton.Humidity
The average relative humidity in September in Southampton, Massachusetts, is 78%.Rainfall
September is the month with the least rainfall in Southampton. Rain falls for 13.7 days and accumulates 2.01" (51mm) of precipitation.Snowfall
In Southampton, snow does not fall in June through September.Daylight
In Southampton, the average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 6:17 am and sunset at 7:24 pm. On the last day of September, sunrise is at 6:47 am and sunset at 6:33 pm EDT.
Sunshine
In September, the average sunshine in Southampton is 8.7h.UV index
The average daily maximum UV index in September in Southampton is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: During September, 4 as the daily maximum UV index converts into the following advice:
Undertake protective steps - Recommendations to avoid sunburn are issued. To avoid the Sun's strongest rays, limit exposure around the mid-day period. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Frequently asked questions
What is the usual temperature for Southampton in September?
What is the average humidity in September in Southampton?
What is the driest month in Southampton?
How many days does it rain in September in Southampton?
When it does not snow in Southampton?
Does it snow in Southampton in September?
What is the average length of the day in September in Southampton?
When are sunrise and sunset in September in Southampton?
How many hours of sunshine does Southampton have in September?
What is the UV index intensity in September in Southampton?
Average temperature in September
Southampton, MA
- Average high temperature in September: 72.1°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (30.6°F).
- Average low temperature in September: 52.9°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (18°F).
Average pressure in September
Southampton, MA
- Average pressure in September: 30.06"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
Southampton, MA
- Average wind speed in September: 5.6mph
The windiest months (with the highest average wind speed) are January, February and March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in September
Southampton, MA
- Average humidity in September: 78%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is April (72%).
Average rainfall in September
Southampton, MA
- Average rainfall in September: 2.01"
The wettest months (with the highest rainfall) are October and December (3.27").
The driest month (with the least rainfall) is September (2.01").
Average rainfall days in September
Southampton, MA
- Average rainfall days in September: 13.7 days
The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is January (8.9 days).
Average snowfall in September
Southampton, MA
- Average snowfall in September: 0"
The month with the highest snowfall is February (5.59").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Southampton, MA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (9.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Southampton, MA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 8h and 4min
The months with the most sunshine are July and August (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in September
Southampton, MA
- Average sunshine days in September: 13.5 days
The month with the most sunshine days is January (16.2 days).
The month with the least sunshine days is June (10.3 days).
Average UV index in September
Southampton, MA
- Average UV index in September: 4
The month with the highest UV index is June (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
Southampton, MA
- Average cloud cover in September: 38
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in September
Southampton, MA
- Average visibility in September: 5mi
The months with the highest visibility are April, November and December (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September and October (5mi).
Southampton, Massachusetts, USA
Weather forecast for your location
2. Allow the app to use your location
