August weather forecastDelaware City, DE
August
Weather in August
In August, Delaware City experiences high temperatures reflective of its summer climate. Despite this being the case, the conditions become slightly milder compared to July. The sea continues to stay warm, creating ideal conditions for water lovers. With a maximum temperature averaging 83.5°F (28.6°C), the city still holds onto summer, attracting those fond of sun-soaked relaxation. The presence of long daylight hours and ample sunshine keeps the summer vibes alive during this month.Temperature
August's weather records an average high-temperature of a still warm 83.5°F (28.6°C), showing little deviation from July. During August, the nighttime temperature averages of 66.9°F (19.4°C).Heat index
August's mean heat index is appraised at a hot 91.4°F (33°C). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.Heat index specifics point out values are for conditions of shade and a slight breeze. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a composite of temperature and humidity figures to convey how warm it feels. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
Humidity
In Delaware City, the average relative humidity in August is 76%.Rainfall
The month with the most rainfall is August, when the rain falls for 15.3 days and typically aggregates up to 3.11" (79mm) of precipitation.Snowfall
In Delaware City, snow does not fall in May through October.Ocean temperature
The month with the warmest seawater in Delaware City is August, with an average ocean temperature of 76.3°F (24.6°C).Note: Every individual's cold threshold differs, but factors like today's sunshine, wind, and temperature can tip the scales for a delightful swim in 76.3°F (24.6°C) waters. For reference, Olympians swim in waters of 77°F (25°C) to 82.4°F (28°C).
Daylight
In Delaware City, the average length of the day in August is 13h and 41min.On the first day of August, sunrise is at 6:02 am and sunset at 8:14 pm. On the last day of the month, sunrise is at 6:30 am and sunset at 7:34 pm EDT.
Sunshine
In August, the average sunshine is 10.3h.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index, 6 in August, converts into the following recommendations:
Deter overexposure. Protecting against the sun's effects is essential. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Be on guard! The reflective nature of sand and water boosts UV exposure.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Delaware City, DE
- Average high temperature in August: 83.5°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (38.3°F).
- Average low temperature in August: 66.9°F
The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (26.8°F).
Average pressure in August
Delaware City, DE
- Average pressure in August: 29.99"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in August
Delaware City, DE
- Average wind speed in August: 5.5mph
The windiest months (with the highest average wind speed) are February and March (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in August
Delaware City, DE
- Average humidity in August: 76%
The month with the highest relative humidity is October (78%).
The month with the lowest relative humidity is April (72%).
Average rainfall in August
Delaware City, DE
- Average rainfall in August: 3.11"
The wettest month (with the highest rainfall) is August (3.11").
The driest month (with the least rainfall) is January (1.54").
Average rainfall days in August
Delaware City, DE
- Average rainfall days in August: 15.3 days
The month with the highest number of rainy days is May (16.4 days).
The month with the least rainy days is January (7.8 days).
Average snowfall in August
Delaware City, DE
- Average snowfall in August: 0"
The month with the highest snowfall is January (1.65").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in August
Delaware City, DE
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (4.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in August
Delaware City, DE
- Average sea temperature in August: 76.3°F
The best month for swimming (with the highest average sea temperature) is August (76.3°F).
The coldest month (with the lowest average sea temperature) is February (40.9°F).
Average daylight in August /
Average sunshine in August
Delaware City, DE
- Average daylight in August: 13h and 42min
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 18min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).
Average sunshine days in August
Delaware City, DE
- Average sunshine days in August: 13.8 days
The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is May (11.8 days).
Average UV index in August
Delaware City, DE
- 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
Delaware City, DE
- Average cloud cover in August: 32
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 30).
Average visibility in August
Delaware City, DE
- 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).





