August weather forecastDelaware, NJ
August
Weather in August
The last month of the summer, August, is also a moderately hot month in Delaware, New Jersey, with an average temperature varying between 80.2°F (26.8°C) and 59.4°F (15.2°C).Temperature
August's average high-temperature is a still warm 80.2°F (26.8°C), maintaining a close comparison with July's 82.2°F (27.9°C). Delaware registers a consistent average low-temperature of 59.4°F (15.2°C) during August.Humidity
In Delaware, New Jersey, the average relative humidity in August is 78%.Rainfall
In Delaware, in August, it is raining for 15.6 days, with typically 2.6" (66mm) of accumulated precipitation. Throughout the year, in Delaware, there are 165.9 rainfall days, and 31.61" (803mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall in Delaware, New Jersey.Daylight
The average length of the day in August is 13h and 46min.On the first day of the month, sunrise is at 5:57 am and sunset at 8:15 pm. On the last day of August, in Delaware, sunrise is at 6:26 am and sunset at 7:33 pm EDT.
Sunshine
In August, the average sunshine is 9.9h.UV index
In Delaware, the average daily maximum UV index in August is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for average individuals.Note: In August, a regular UV index of 5 translates into these guidelines:
Ensure safety - Sun damage prevention is strongly urged. It's recommended to limit sun exposure when its radiation is at its peak during midday. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Delaware, NJ
- Average high temperature in August: 80.2°F
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (32.5°F).
- Average low temperature in August: 59.4°F
The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure in August
Delaware, NJ
- Average pressure in August: 29.99"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in August
Delaware, NJ
- Average wind speed in August: 4.9mph
The windiest months (with the highest average wind speed) are January, February and March (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in August
Delaware, NJ
- Average humidity in August: 78%
The months with the highest relative humidity are February, October and December (82%).
The month with the lowest relative humidity is April (76%).
Average rainfall in August
Delaware, NJ
- Average rainfall in August: 2.6"
The wettest month (with the highest rainfall) is July (3.11").
The driest month (with the least rainfall) is September (1.81").
Average rainfall days in August
Delaware, NJ
- Average rainfall days in August: 15.6 days
The month with the highest number of rainy days is July (17.4 days).
The month with the least rainy days is February (9.5 days).
Average snowfall in August
Delaware, NJ
- Average snowfall in August: 0"
The month with the highest snowfall is February (5.67").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Delaware, NJ
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (11.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Delaware, NJ
- Average daylight in August: 13h and 48min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in August: 9h and 54min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).
Average sunshine days in August
Delaware, NJ
- Average sunshine days in August: 13.3 days
The month with the most sunshine days is November (16.4 days).
The month with the least sunshine days is June (11.1 days).
Average UV index in August
Delaware, NJ
- Average UV index in August: 5
The month with the highest UV index is June (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in August
Delaware, NJ
- Average cloud cover in August: 37
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 35).
Average visibility in August
Delaware, NJ
- Average visibility in August: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
