August weather forecast and climate
Dover, DE

The public Archives building in Dover, Delaware, between two large trees
The public Archives building in Dover, Delaware, between two large trees
August, the last month of the summer, in Dover, is also a moderately hot month, with average temperature ranging between max 81.9°F (27.7°C) and min 68.4°F (20.2°C).

Temperature

In Dover, the average high-temperature in August is essentially the same as in July - a still moderately hot 81.9°F (27.7°C). In Dover, Delaware, the average low-temperature is 68.4°F (20.2°C).

Heat index

In August, the average heat index is calculated to a hot 88°F (31.1°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity 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 'real feel', 'feels like', 'felt air temperature', or 'apparent temperature', is a measure that combines both air temperature and relative humidity into a single value that indicates how hot the weather feels. Additional factors like pregnancy, wind, clothing, and activity influence one's weather impression. 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. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

In Dover, the average relative humidity in August is 78%.

Rainfall

August is the month with the most rainfall in Dover. Rain falls for 15.6 days and accumulates 3.15" (80mm) of precipitation.

Snowfall

April through November are months without snowfall in Dover.

Daylight

In August, the average length of the day is 13.6h.

Sunshine

In Dover, Delaware, the average sunshine in August is 10.4h.

UV index

Months with the highest UV index in Dover are May 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 ordinary individuals.
Note: In August, the average maximum UV index of 6 translate into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

What is the temperature in August in Dover?

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). In August, the average heat index (a.k.a. 'feels like', 'apparent temperature'), that combines both air temperature and relative humidity, is estimated at 88°F (31.1°C).

What is the average humidity in August in Dover?

In Dover, Delaware, the average relative humidity in August is 78%.

How many days does it rain in August in Dover?

In Dover, in August, during 15.6 rainfall days, 3.15" (80mm) of precipitation is typically accumulated.

What is the wettest month in Dover?

The month with the most rainfall is August when the rain falls for 15.6 days and typically aggregates up to 3.15" (80mm) of precipitation.

When it does not snow in Dover?

In Dover, Delaware, snow does not fall in April through November.

How many hours of daylight does Dover have in August?

In August, the average length of the day is 13.6h.

How many hours of sunshine does Dover have in August?

In Dover, Delaware, the average sunshine in August is 10.4h.

What is the month with the highest UV index in Dover?

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 Dover?

In Dover, Delaware, the average daily maximum UV index in August is 6. A UV Index of 6 to 7 symbolizes a high hazard to health from unsafe exposure to the Sun's UV rays.
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"

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

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%).
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").
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).
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: 13.6h

The month with the longest days is June (Average daylight: 14.9h).
The month with the shortest days is December (Average daylight: 9.5h).

  • Average sunshine in August: 10.4h

The month with the most sunshine is July (Average sunshine: 10.8h).
The month with the least sunshine is February (Average sunshine: 5h).

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

Months with the highest UV index are May, June, July and August (UV index 6).
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

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).