September weather forecast
East Sandwich, MA

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Weather in September

September, the first month of the autumn in East Sandwich, is also an agreeable month, with temperature in the range of an average high of 68.2°F (20.1°C) and an average low of 61.7°F (16.5°C).

Temperature

September marks a gentle change in average high-temperature, declining from August's warm 73.8°F (23.2°C) to a pleasant 68.2°F (20.1°C). In East Sandwich, September is characterized by an average low-temperature of 61.7°F (16.5°C), indicating a minor drop from daytime highs.

Humidity

In East Sandwich, the average relative humidity in September is 79%.

Rainfall

In September, the rain falls for 11.1 days. Throughout September, 1.34" (34mm) of precipitation is accumulated. In East Sandwich, Massachusetts, during the entire year, the rain falls for 138.1 days and collects up to 18.74" (476mm) of precipitation.

Snowfall

In East Sandwich, Massachusetts, snow does not fall in May through October.

Daylight

In East Sandwich, the average length of the day in September is 12h and 28min.
On the first day of the month, sunrise is at 6:08 am and sunset at 7:14 pm. On the last day of September, sunrise is at 6:38 am and sunset at 6:24 pm EDT.

Sunshine

The average sunshine in September is 8.7h.

UV index

In September, the average daily maximum UV index in East Sandwich is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for average individuals.
Note: The UV index of 4 in September translates into these instructions:
Put precautions into practice - Ensuring skin and eye safety is a necessity. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
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Frequently asked questions

What are the temperatures in East Sandwich in September?

In East Sandwich, 68.2°F (20.1°C) is the average high-temperature and 61.7°F (16.5°C) is the average low-temperature during September.

What is the average humidity in September in East Sandwich?

In September, the average relative humidity is 79%.

How many days does it rain in September in East Sandwich?

In East Sandwich, during September, the rain falls for 11.1 days and regularly aggregates up to 1.34" (34mm) of precipitation.

When it does not snow in East Sandwich?

May through October are months without snowfall.

What is the average length of the day in September in East Sandwich?

In September, the average day length is 12h and 28min.

When are sunrise and sunset in September in East Sandwich?

On the first day of September, sunrise is at 6:08 am and sunset at 7:14 pm. On the last day of the month, sunrise is at 6:38 am and sunset at 6:24 pm EDT.

How long on average sun shines in September in East Sandwich?

In September, the average sunshine duration in East Sandwich, Massachusetts, is 8.7h.

How high is the UV index in September in East Sandwich?

In East Sandwich, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
East Sandwich, MA

Average temperature in September - East Sandwich, MA
  • Average high temperature in September: 68.2°F

The warmest month (with the highest average high temperature) is August (73.8°F).
The month with the lowest average high temperature is January (37.4°F).

  • Average low temperature in September: 61.7°F

The months with the highest average low temperature are July and August (67.1°F).
The coldest month (with the lowest average low temperature) is January (29.1°F).

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Average pressure in September
East Sandwich, MA

Average pressure in September - East Sandwich, 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).

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Average wind speed in September
East Sandwich, MA

Average wind speed in September - East Sandwich, MA
  • Average wind speed in September: 11.4mph

The windiest month (with the highest average wind speed) is January (15.2mph).
The calmest month (with the lowest average wind speed) is August (9.5mph).

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Average humidity in September
East Sandwich, MA

Average humidity in September - East Sandwich, MA
  • Average humidity in September: 79%

The months with the highest relative humidity are June and July (82%).
The month with the lowest relative humidity is November (74%).

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Average rainfall in September
East Sandwich, MA

Average rainfall in September - East Sandwich, MA
  • Average rainfall in September: 1.34"

The wettest month (with the highest rainfall) is October (2.2").
The driest month (with the least rainfall) is February (1.26").

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Average rainfall days in September
East Sandwich, MA

Average rainfall days in September - East Sandwich, MA
  • Average rainfall days in September: 11.1 days

The month with the highest number of rainy days is July (14.3 days).
The month with the least rainy days is February (8 days).

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Average snowfall in September
East Sandwich, MA

Average snowfall in September - East Sandwich, MA
  • Average snowfall in September: 0"

The month with the highest snowfall is March (1.3").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in September
East Sandwich, MA

Average snowfall days in September - East Sandwich, MA
  • Average snowfall days in September: 0 days

The months with the highest number of snowfall days are January and February (5.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in September /
Average sunshine in September
East Sandwich, MA

Average daylight in September / Average sunshine in September - East Sandwich, 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 36min).
The months with the least sunshine are February and December (Average sunshine: 4h and 36min).

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Average sunshine days in September
East Sandwich, MA

Average sunshine days in September - East Sandwich, MA
  • Average sunshine days in September: 16.7 days

The month with the most sunshine days is December (17.6 days).
The month with the least sunshine days is July (14.8 days).

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Average UV index in September
East Sandwich, MA

Average UV index in September - East Sandwich, MA
  • Average UV index in September: 4

The month with the highest UV index is July (UV index 6).
The 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
East Sandwich, MA

Average cloud cover in September - East Sandwich, MA
  • Average cloud cover in September: 32

The months with the most cloud cover are February, March and December (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 28).

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Average visibility in September
East Sandwich, MA

Average visibility in September - East Sandwich, 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).

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East Sandwich, Massachusetts, USA

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