September weather forecast and climate
Duxbury, MA

Weather in September

September, the first month of the autumn, in Duxbury, is still a pleasant month, with average temperature fluctuating between 69.3°F (20.7°C) and 59.9°F (15.5°C).

Temperature

In Duxbury, the average high-temperature slightly decreases, from a moderately hot 75.7°F (24.3°C) in August, to a pleasant 69.3°F (20.7°C). In Duxbury, the average low-temperature is 59.9°F (15.5°C).

Humidity

In Duxbury, the average relative humidity is 78%.

Rainfall

In Duxbury, during September, the rain falls for 10.1 days and regularly aggregates up to 0.83" (21mm) of precipitation. Throughout the year, there are 120.2 rainfall days, and 12.24" (311mm) of precipitation is accumulated.

Snowfall

In Duxbury snow does not fall in May through October.

Ocean temperature

In September, the average ocean temperature in Duxbury is 64°F (17.8°C).
Note: Swimming in 64°F (17.8°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

In September, the average length of the day is 12.5h.

Sunshine

In September, the average sunshine in Duxbury is 8.6h.

UV index

In Duxbury, Massachusetts, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to the UV radiation for average individuals.
Note: The average daily UV index of 4 transform into the following instructions:
Take precautions - Protection against sun damage is advised. 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 average humidity in September in Duxbury?

In September, the average relative humidity in Duxbury, Massachusetts, is 78%.

How many days does it rain in September in Duxbury?

In Duxbury, in September, during 10.1 rainfall days, 0.83" (21mm) of precipitation is typically accumulated.

When it does not snow in Duxbury?

May through October are months without snowfall in Duxbury, Massachusetts.

What is the ocean temperature in September in Duxbury?

In Duxbury, Massachusetts, in September, the average water temperature is 64°F (17.8°C). For most, swimming in 64°F (17.8°C) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 69.8°F (21°C) to 59°F (15°C).

What is the average length of the day in September in Duxbury?

In Duxbury, the average length of the day in September is 12.5h.

How long on average sun shines in September in Duxbury?

In September, the average sunshine in Duxbury is 8.6h.

What is the UV index intensity in September in Duxbury?

In September, the average daily maximum UV index in Duxbury is 4. A UV Index estimate of 3 to 5 represents a medium hazard to health from unprotected exposure to the UV radiation.

Average temperature in September
Duxbury, MA

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

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).

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Average pressure in September
Duxbury, MA

Average pressure in September - Duxbury, MA
  • Average pressure in September: 30.05"

The month with the highest atmospheric pressure is November (30.06").
The month with the lowest atmospheric pressure is June (29.93").

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Average wind speed in September
Duxbury, MA

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).

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Average humidity in September
Duxbury, MA

Average humidity in September - Duxbury, MA
  • Average humidity in September: 78%

Months with the highest relative humidity are June and July (80%).
Months with the lowest relative humidity are March and November (74%).

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Average rainfall in September
Duxbury, MA

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").

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Average rainfall days in September
Duxbury, MA

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).

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Average snowfall in September
Duxbury, MA

Average snowfall in September - Duxbury, MA
  • Average snowfall in September: 0"

The month with the highest snowfall is February (0.98").
Months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in September
Duxbury, MA

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).
Months with the least snowfall days are May, June, July, August and September (0 days).

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Average sea temperature in September
Duxbury, MA

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).

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Average daylight in September /
Average sunshine in September
Duxbury, MA

Average daylight in September / Average sunshine in September - Duxbury, MA
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.2h).
The month with the shortest days is December (Average daylight: 9.2h).

  • Average sunshine in September: 8.6h

The month with the most sunshine is August (Average sunshine: 10.7h).
Months with the least sunshine are February and December (Average sunshine: 4.7).

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Average sunshine days in September
Duxbury, MA

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).

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Average UV index in September
Duxbury, MA

Average UV index in September - Duxbury, MA
  • Average UV index in September: 4

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

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Average cloud cover in September
Duxbury, MA

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).

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Average visibility in September
Duxbury, MA

Average visibility in September - Duxbury, MA
  • 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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