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 onset of September is marked by a minor decrease in temperature, transitioning from a moderately hot 75.7°F (24.3°C) in August to an agreeable 69.3°F (20.7°C). The nighttime temperature in Duxbury, during September, averages of 59.9°F (15.5°C).Humidity
In Duxbury, the average relative humidity in September is 78%.Rainfall
In Duxbury, in September, during 10.1 rainfall days, 0.83" (21mm) of precipitation is typically accumulated. In Duxbury, during the entire year, the rain falls for 120.2 days and collects up to 12.24" (311mm) of precipitation.Snowfall
May through October are months without snowfall in Duxbury.Ocean temperature
In Duxbury, in September, the average water temperature is 64°F (17.8°C).Note: Most people do not find pleasure in swimming when the water temperature is 64°F (17.8°C). Breathing becomes increasingly difficult to manage as the water temperature drops from 69.8°F (21°C) to 59°F (15°C).
Daylight
The average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 6:09 am and sunset at 7:15 pm. On the last day of September, sunrise is at 6:39 am and sunset at 6:25 pm EDT.
Sunshine
In September, the average sunshine is 8.6h.UV index
In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: In September, the average maximum UV index of 4 translates into the following recommendations:
Guard yourself - Precautionary measures against sun damage are advocated. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
What is the ocean temperature in September?
How many hours of daylight does Duxbury have in September?
When are sunrise and sunset in September?
How many hours of sunshine does Duxbury have in September?
What is the UV index reading in September?
Average temperature in September
Duxbury, MA
- Average high temperature in September: 69.3°F
The warmest months (with the highest average high temperature) are July and August (75.7°F).
The month with the lowest average high temperature is January (35.8°F).
- Average low temperature in September: 59.9°F
The months with the highest average low temperature are July and August (65.8°F).
The coldest month (with the lowest average low temperature) is January (26.2°F).
Average pressure in September
Duxbury, MA
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Duxbury, MA
- Average wind speed in September: 9.4mph
The windiest month (with the highest average wind speed) is January (13mph).
The calmest month (with the lowest average wind speed) is August (8.1mph).
Average humidity in September
Duxbury, MA
- Average humidity in September: 78%
The months with the highest relative humidity are June and July (80%).
The months with the lowest relative humidity are March and November (74%).
Average rainfall in September
Duxbury, MA
- Average rainfall in September: 0.83"
The wettest month (with the highest rainfall) is July (1.34").
The driest month (with the least rainfall) is February (0.75").
Average rainfall days in September
Duxbury, MA
- Average rainfall days in September: 10.1 days
The month with the highest number of rainy days is July (13.2 days).
The month with the least rainy days is February (6.3 days).
Average snowfall in September
Duxbury, MA
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.98").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Duxbury, MA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average sea temperature in September
Duxbury, MA
- Average sea temperature in September: 64°F
The best month for swimming (with the highest average sea temperature) is August (67.6°F).
The coldest month (with the lowest average sea temperature) is March (38.8°F).
Average daylight in September /
Average sunshine in September
Duxbury, 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 month with the most sunshine is August (Average sunshine: 10h and 42min).
The months with the least sunshine are February and December (Average sunshine: 4h and 42min).
Average sunshine days in September
Duxbury, MA
- Average sunshine days in September: 18.5 days
The month with the most sunshine days is December (18.9 days).
The month with the least sunshine days is July (15.7 days).
Average UV index in September
Duxbury, MA
- Average UV index in September: 4
The months with the highest UV index are 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
Duxbury, MA
- Average cloud cover in September: 33
The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in September
Duxbury, MA
- 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).
Duxbury, Massachusetts, USA
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