August weather forecastDover, DE
August
Weather in August
August sustains the summer's fervent heat, albeit with a temperature decrease to a high of 81.9°F (27.7°C). The frequency of rainfall days remains at 15.6, contributing to a monthly average rainfall of 3.15" (80mm). As a result, this month is considered to be the year's wettest. August does mark a decrease in daily sunshine hours, dropping to 10.4 hours against a day-length averaging 13.7 hours. This slight fall in solar illumination allows for a transitional phase from sweltering summer towards a more temperate fall season.Temperature
The onset of August manifests an average high-temperature of a still warm 81.9°F (27.7°C), demonstrating a minor variation from the preceding month. Throughout August, the average low-temperature dips to an agreeable 68.4°F (20.2°C).Heat index
The heat index value for August is computed to be a tropical 87.8°F (31°C). Long-standing exposure coupled with ongoing activity could result in exhaustion, possibly causing heat cramps.Metrics for the heat index primarily focus on shaded spots and light wind conditions. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a numerical representation of warmth when taking temperature and moisture levels into account. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.
Humidity
The average relative humidity in August is 78%.Rainfall
August is the month with the most rainfall. Rain falls for 15.6 days and accumulates 3.15" (80mm) of precipitation.Snowfall
April through November are months without snowfall.Daylight
The average length of the day in August is 13h and 39min.On the first day of August, sunrise is at 6:03 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 6:30 am and sunset at 7:33 pm EDT.
Sunshine
In August, the average sunshine is 10.4h.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the average person.Note: In August, a daily UV index of 6 turns into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Dover, DE
- Average high temperature in August: 81.9°F
The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (39.7°F).
- Average low temperature in August: 68.4°F
The month with the highest average low temperature is July (70°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).
Average pressure in August
Dover, DE
- 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
Dover, DE
- Average wind speed in August: 6.4mph
The windiest month (with the highest average wind speed) is February (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in August
Dover, DE
- Average humidity in August: 78%
The month with the highest relative humidity is May (79%).
The months with the lowest relative humidity are January, March, April and November (74%).
Average rainfall in August
Dover, DE
- Average rainfall in August: 3.15"
The wettest month (with the highest rainfall) is August (3.15").
The driest month (with the least rainfall) is January (1.46").
Average rainfall days in August
Dover, DE
- Average rainfall days in August: 15.6 days
The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is November (8.1 days).
Average snowfall in August
Dover, DE
- Average snowfall in August: 0"
The month with the highest snowfall is January (1.65").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in August
Dover, DE
- 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 April, May, June, July, August, September, October and November (0 days).
Average daylight in August /
Average sunshine in August
Dover, 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 30min).
- Average sunshine in August: 10h and 24min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).
Average sunshine days in August
Dover, DE
- Average sunshine days in August: 12.6 days
The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is July (10.8 days).
Average UV index in August
Dover, 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 and December (UV index 2).
Average cloud cover in August
Dover, DE
- Average cloud cover in August: 29
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in August
Dover, 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).
