July weather forecast
East Dennis, MA

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Weather in July

July in East Dennis, Massachusetts, is a pleasant summer month, with an average temperature fluctuating between 67.6°F (19.8°C) and 71.6°F (22°C).

Temperature

The arrival of July witnesses a small shift in the average high-temperature, moving from a comfortable 63.5°F (17.5°C) in June to an agreeable 71.6°F (22°C). July nights document an average temperature reading of 67.6°F (19.8°C).

Humidity

The months with the highest humidity are June and July, with an average relative humidity of 84%.

Rainfall

In July, the rain falls for 12.3 days. Throughout July, 1.02" (26mm) of precipitation is accumulated. Throughout the year, there are 129 rainfall days, and 14.21" (361mm) of precipitation is accumulated.

Snowfall

May through November are months without snowfall.

Ocean temperature

In July, the average ocean temperature is 65.8°F (18.8°C).
Note: Swimming is not a pleasurable activity for most people when the water temperature is 65.8°F (18.8°C). Breathing control gets harder as the water temperature drops from 69.8°F (21°C) to 59°F (15°C).

Daylight

In July, the average length of the day is 14h and 51min.
On the first day of July in East Dennis, sunrise is at 5:10 am and sunset at 8:19 pm. On the last day of the month, sunrise is at 5:34 am and sunset at 7:59 pm EDT.

Sunshine

In East Dennis, the average sunshine in July is 10.5h.

UV index

The months with the highest UV index are July and August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: In July, the maximum UV index of 6 transforms into these recommendations:
Shun overexposure. Protection from sun ravages is indispensable. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Updated: Jul 20, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in July?

The high-temperature, in July, in East Dennis, records 71.6°F (22°C), while the low-temperature is 67.6°F (19.8°C).

What is the most humid month?

June and July, with an average relative humidity of 84%, are most humid months.

What is the average humidity in July?

In East Dennis, the average relative humidity in July is 84%.

How many days does it rain in July?

In East Dennis, in July, during 12.3 rainfall days, 1.02" (26mm) of precipitation is typically accumulated.

When it does not snow?

May through November are months without snowfall.

How cold is the water in July?

In July, the average ocean temperature is 65.8°F (18.8°C). For most, swimming in 65.8°F (18.8°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).

How many hours of daylight does East Dennis have in July?

In East Dennis, the average day length in July is 14h and 51min.

When are sunrise and sunset in July?

In July, on the first day of the month, sunrise is at 5:10 am and sunset at 8:19 pm. On the last day of the month, sunrise is at 5:34 am and sunset at 7:59 pm EDT.

How long on average sun shines in July?

In East Dennis, the average sunshine duration in July is 10.5h.

What are the months with the highest UV index?

The months with the highest UV index are July and August, with an average maximum UV index of 6.

What is the UV index reading in July?

The average daily maximum UV index in July is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to UV radiation.
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 July
East Dennis, MA

Average temperature in July - East Dennis, MA
  • Average high temperature in July: 71.6°F

The warmest month (with the highest average high temperature) is August (72.1°F).
The month with the lowest average high temperature is January (38.5°F).

  • Average low temperature in July: 67.6°F

The month with the highest average low temperature is August (68.5°F).
The coldest month (with the lowest average low temperature) is January (30.6°F).

Average pressure in July
East Dennis, MA

Average pressure in July - East Dennis, MA
  • Average pressure in July: 29.96"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 July
East Dennis, MA

Average wind speed in July - East Dennis, MA
  • Average wind speed in July: 10.9mph

The windiest month (with the highest average wind speed) is January (16.8mph).
The calmest months (with the lowest average wind speed) are July and August (10.9mph).

Average humidity in July
East Dennis, MA

Average humidity in July - East Dennis, MA
  • Average humidity in July: 84%

The months with the highest relative humidity are June and July (84%).
The month with the lowest relative humidity is November (74%).

Average rainfall in July
East Dennis, MA

Average rainfall in July - East Dennis, MA
  • Average rainfall in July: 1.02"

The wettest month (with the highest rainfall) is October (1.93").
The driest month (with the least rainfall) is August (0.94").

Average rainfall days in July
East Dennis, MA

Average rainfall days in July - East Dennis, MA
  • Average rainfall days in July: 12.3 days

The month with the highest number of rainy days is May (12.5 days).
The month with the least rainy days is February (8.3 days).

Average snowfall in July
East Dennis, MA

Average snowfall in July - East Dennis, MA
  • Average snowfall in July: 0"

The month with the highest snowfall is January (0.87").
The months with the least snowfall are May, June, July, August, September, October and November (0").

Average snowfall days in July
East Dennis, MA

Average snowfall days in July - East Dennis, MA
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (6.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average sea temperature in July
East Dennis, MA

Average sea temperature in July - East Dennis, MA
  • Average sea temperature in July: 65.8°F

The best month for swimming (with the highest average sea temperature) is August (67.5°F).
The coldest month (with the lowest average sea temperature) is March (39°F).

Average daylight in July /
Average sunshine in July
East Dennis, MA

Average daylight in July / Average sunshine in July - East Dennis, MA
  • Average daylight in July: 14h and 5min

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 July: 10h and 3min

The month with the most sunshine is August (Average sunshine: 10h and 48min).
The months with the least sunshine are February and December (Average sunshine: 4h and 36min).

Average sunshine days in July
East Dennis, MA

Average sunshine days in July - East Dennis, MA
  • Average sunshine days in July: 17.6 days

The month with the most sunshine days is September (18.6 days).
The month with the least sunshine days is February (14.3 days).

Average UV index in July
East Dennis, MA

Average UV index in July - East Dennis, MA
  • Average UV index in July: 6

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 July
East Dennis, MA

Average cloud cover in July - East Dennis, MA
  • Average cloud cover in July: 29

The month with the most cloud cover is December (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 27).

Average visibility in July
East Dennis, MA

Average visibility in July - East Dennis, MA
  • Average visibility in July: 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).

East Dennis, Massachusetts, USA

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