August weather forecast and climate
Newark, NJ

A mirrored reflection of Newark City in New Jersey, on the Passaic River
A mirrored reflection of Newark City in New Jersey, on the Passaic River
The last month of the summer, August, is also a moderately hot month in Newark, New Jersey, with average temperature ranging between max 81.9°F (27.7°C) and min 68.4°F (20.2°C).

Temperature

In Newark, New Jersey, the average high-temperature is essentially the same as in July - a still warm 81.9°F (27.7°C). In Newark, the average low-temperature is 68.4°F (20.2°C).

Heat index

The average heat index in August is estimated at a tropical 86.5°F (30.3°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'apparent temperature', 'real feel', or 'feels like', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. This effect is individual, with diverse people perceiving weather differently for numerous reasons (pregnancy, metabolic differences, differences in body mass, height, and shape), and activity. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

Months with the lowest humidity are April and August, with an average relative humidity of 72%.

Rainfall

In August, the rain falls for 14.8 days. Throughout August, 2.6" (66mm) of precipitation is accumulated. In Newark, New Jersey, during the entire year, the rain falls for 161.1 days and collects up to 30.67" (779mm) of precipitation.

Snowfall

May through October are months without snowfall.

Ocean temperature

August is the month with the warmest seawater in Newark, with an average ocean temperature of 74.1°F (23.4°C).
Note: A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 74.1°F (23.4°C) water. (FYI: The Olympic swimming competition requires a water temperature between 77°F (25°C) and 82.4°F (28°C).)

Daylight

In Newark, the average length of the day in August is 13.7h.

Sunshine

In Newark, the average sunshine is 10.5h.

UV index

Months with the highest UV index in Newark, New Jersey, are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health risk from the exposure to the Sun's UV rays for the ordinary person.
Note: In August, the average maximum UV index of 6 translate into the following recommendations:
Take precautions against overexposure. Protection against sun damage is needed. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.

What is the temperature in August in Newark?

The average high-temperature, in August, is 81.9°F (27.7°C), while the average low-temperature is 68.4°F (20.2°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), that combines relative humidity and air temperature, in August is evaluated at 86.5°F (30.3°C).

What is the least humid month in Newark?

Months with the lowest humidity are April and August, with an average relative humidity of 72%.

What is the average humidity in August in Newark?

In Newark, the average relative humidity in August is 72%.

How many days does it rain in August in Newark?

In Newark, during August, the rain falls for 14.8 days and regularly aggregates up to 2.6" (66mm) of precipitation.

When it does not snow in Newark?

May through October are months without snowfall.

What is the month with the warmest ocean in Newark?

The month with the warmest seawater in Newark is August, with an average ocean temperature of 74.1°F (23.4°C).

What is the ocean temperature in August in Newark?

In Newark, in August, the average water temperature is 74.1°F (23.4°C). A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 74.1°F (23.4°C) water.

How many hours of daylight does Newark have in August?

In Newark, New Jersey, the average length of the day in August is 13.7h.

How long on average sun shines in August in Newark?

The average sunshine in August is 10.5h.

What are the months with the highest UV index in Newark?

Months with the highest UV index are June through August, with an average maximum UV index of 6.

What is the UV index intensity in August in Newark?

The average daily maximum UV index in August in Newark is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to the Sun's UV rays.
Average temperature in August - Newark, NJ
  • Average high temperature in August: 81.9°F

The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (36.3°F).

  • Average low temperature in August: 68.4°F

The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).

Average pressure in August - Newark, NJ
  • Average pressure in August: 29.98"

The month with the highest atmospheric pressure is November (30.11").
The month with the lowest atmospheric pressure is June (29.93").

Average wind speed in August - Newark, NJ
  • Average wind speed in August: 6.4mph

The windiest month (with the highest average wind speed) is January (9.8mph).
The calmest month (with the lowest average wind speed) is July (6.3mph).

Average humidity in August - Newark, NJ
  • Average humidity in August: 72%

Months with the highest relative humidity are February, May, October and December (76%).
Months with the lowest relative humidity are April and August (72%).

Average rainfall in August - Newark, NJ
  • Average rainfall in August: 2.6"

The wettest months (with the highest rainfall) are July and December (3.19").
The driest month (with the least rainfall) is September (1.65").

Average rainfall days in August - Newark, NJ
  • Average rainfall days in August: 14.8 days

Months with the highest number of rainy days are May and July (17.1 days).
The month with the least rainy days is November (9.5 days).

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

The month with the highest snowfall is March (3.46").
Months with the least snowfall are May, June, July, August, September and October (0").

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

The month with the highest number of snowfall days is January (6.1 days).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

Average sea temperature in August - Newark, NJ
  • Average sea temperature in August: 74.1°F

The best month for swimming (with the highest average sea temperature) is August (74.1°F).
The coldest month (with the lowest average sea temperature) is February (39.7°F).

Average daylight in August / Average sunshine in August - Newark, NJ
  • Average daylight in August: 13.7h

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in August: 10.5h

The month with the most sunshine is July (Average sunshine: 10.6h).
The month with the least sunshine is February (Average sunshine: 4.8h).

Average sunshine days in August - Newark, NJ
  • Average sunshine days in August: 14.4 days

The month with the most sunshine days is November (18.4 days).
The month with the least sunshine days is June (11.4 days).

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

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

Average cloud cover in August - Newark, NJ
  • Average cloud cover in August: 30

Months with the most cloud cover are February, March and December (Cloud cover 47).
Months with the least cloud cover are July and August (Cloud cover 30).

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