August weather forecast
Sewell, NJ

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Weather in August

The last month of the summer, August, is also a moderately hot month in Sewell, New Jersey, with temperature in the range of an average low of 67.6°F (19.8°C) and an average high of 83.7°F (28.7°C).

Temperature

In August, Sewell experiences a barely noticeable shift in meteorological conditions, with average high-temperatures moving from 85.6°F (29.8°C) in July to a still moderately hot 83.7°F (28.7°C). Sewell's temperature tends to fall to an average low of 67.6°F (19.8°C) during the nights of August.

Heat index

The average heat index in August is calculated to be a tropical 91.4°F (33°C). Emphasize additional safety, risk of heat cramps and heat exhaustion is high. Continuous activity might result in heatstroke.
One should consider that heat index numbers are for shaded settings and light wind. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', embodies the combination of air temperature and moisture content to illustrate perceived heat. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.

Humidity

In August, the average relative humidity is 73%.

Rainfall

August is the month with the most rainfall. Rain falls for 12.5 days and accumulates 1.1" (28mm) of precipitation.

Snowfall

In Sewell, New Jersey, snow does not fall in May through October.

Daylight

In August, the average length of the day is 13h and 41min.
On the first day of the month, sunrise is at 6:00 am and sunset at 8:13 pm. On the last day of August, sunrise is at 6:28 am and sunset at 7:32 pm EDT.

Sunshine

The average sunshine in August is 10.4h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: An average UV index of 6 in August transforms into this advice:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Updated: Aug 24, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is August?

In Sewell, 83.7°F (28.7°C) is the average high-temperature and 67.6°F (19.8°C) is the average low-temperature during August. In August, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is calculated to be 91.4°F (33°C).

What is the average humidity in August?

In August, the average relative humidity is 73%.

What is the wettest month in Sewell?

August is the month with the most rainfall. Rain falls for 12.5 days and accumulates 1.1" (28mm) of precipitation.

How much does it rain in August?

In Sewell, in August, it is raining for 12.5 days, with typically 1.1" (28mm) of accumulated precipitation.

When it does not snow?

In Sewell, snow does not fall in May through October.

What is the average length of the day in August?

The average day length in August is 13h and 41min.

When is the sunrise / sunset in August?

On the first day of August, sunrise is at 6:00 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 6:28 am and sunset at 7:32 pm EDT.

How many hours of sunshine does Sewell have in August?

The average sunshine duration in August is 10.4h.

When is the highest UV index?

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

What is the UV index intensity in August in Sewell?

In August, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability 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 August
Sewell, NJ

Average temperature in August - Sewell, NJ
  • Average high temperature in August: 83.7°F

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (37.9°F).

  • Average low temperature in August: 67.6°F

The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).

Average pressure in August
Sewell, NJ

Average pressure in August - Sewell, NJ
  • Average pressure in August: 29.98"Hg

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in August
Sewell, NJ

Average wind speed in August - Sewell, NJ
  • Average wind speed in August: 5.6mph

The windiest months (with the highest average wind speed) are March and April (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).

Average humidity in August
Sewell, NJ

Average humidity in August - Sewell, NJ
  • Average humidity in August: 73%

The months with the highest relative humidity are October and December (77%).
The month with the lowest relative humidity is April (71%).

Average rainfall in August
Sewell, NJ

Average rainfall in August - Sewell, NJ
  • Average rainfall in August: 1.1"

The wettest month (with the highest rainfall) is August (1.1").
The driest month (with the least rainfall) is January (0.51").

Average rainfall days in August
Sewell, NJ

Average rainfall days in August - Sewell, NJ
  • Average rainfall days in August: 12.5 days

The month with the highest number of rainy days is July (13.2 days).
The month with the least rainy days is November (6.3 days).

Average snowfall in August
Sewell, NJ

Average snowfall in August - Sewell, NJ
  • Average snowfall in August: 0"

The month with the highest snowfall is February (0.59").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in August
Sewell, NJ

Average snowfall days in August - Sewell, NJ
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (3.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in August /
Average sunshine in August
Sewell, NJ

Average daylight in August / Average sunshine in August - Sewell, NJ
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in August: 10h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).

Average sunshine days in August
Sewell, NJ

Average sunshine days in August - Sewell, NJ
  • Average sunshine days in August: 15.4 days

The month with the most sunshine days is November (22.5 days).
The month with the least sunshine days is July (14.7 days).

Average UV index in August
Sewell, NJ

Average UV index in August - Sewell, NJ
  • Average UV index in August: 6

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in August
Sewell, NJ

Average cloud cover in August - Sewell, NJ
  • Average cloud cover in August: 31

The months with the most cloud cover are February and March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 29).

Average visibility in August
Sewell, NJ

Average visibility in August - Sewell, NJ
  • Average visibility in August: 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).

Sewell, New Jersey, USA

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