August weather forecast
Delaware, USA

August continues the trend of hot summer weather in Delaware, similar to July's conditions but often slightly more tempered. Coastal regions may still experience higher humidity, leading to a perception of greater heat compared to the interior.

Temperatures in August can hover around 90°F (32.2°C), and days with such high temperatures are common, though typically fewer in number than in July. Nights bring some relief, but the persistent humidity can maintain a sensation of warmth.

As one of the wettest months, August contributes to Delaware's annual rainfall of 44" (1118mm) to 47" (1194mm). The precipitation tends to be uniformly distributed, but occasional summer storms might add to the rainfall totals.

The Atlantic Ocean, the Atlantic High, and the Appalachian Mountains continue to exert their influence on the state's climate, moderating temperatures to some extent. The Appalachian Mountains' barrier effect is less pronounced in the summer months, but the proximity to the ocean remains a key factor in Delaware's weather.

Southern Delaware, with its slightly milder temperatures, enjoys a longer growing season, a factor that remains evident in August as well.

The weather in August represents the lingering heat of summer before the gradual transition into the milder autumn months. Though not as intensely hot as July, August in Delaware retains the character of summer, filled with warmth, vitality, and the lushness of the growing season.

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• Wilmington - August »
  The month with the most rainfall in Wilmington is August, when the rain falls for 17.3 days and typically aggregates up to 4.09" (104mm) of precipitation. August is the month with the warmest seawater in Wilmington, with an average ocean temperature of 73.4°F (23°C).
• Dover - August »
  In Dover, during August, the rain falls for 15.6 days and regularly aggregates up to 3.15" (80mm) of precipitation. On the first day of August in Dover, sunrise is at 6:02 am and sunset at 8:14 pm.
• Newark - August »
  The month with the most rainfall in Newark is August, when the rain falls for 17 days and typically aggregates up to 4.17" (106mm) of precipitation. August brings sultry heat and sunny days to Newark, but slightly lower temperatures than July, the highs resting at around 82.9°F (28.3°C).
• Middletown - August »
  The month with the most rainfall in Middletown is August, when the rain falls for 13.6 days and typically aggregates up to 2.72" (69mm) of precipitation. In Middletown, Delaware, in August, during 13.6 rainfall days, 2.72" (69mm) of precipitation is typically accumulated.
• Smyrna - August »
  In Smyrna, Delaware, in August, it is raining for 16.4 days, with typically 3.86" (98mm) of accumulated precipitation. As Smyrna welcomes August, the average high-temperature is noted at a still moderately hot 82.4°F (28°C), closely aligning with the preceding month.
• Milford - August »
  The month with the most rainfall in Milford is August, when the rain falls for 16 days and typically aggregates up to 3.07" (78mm) of precipitation. In Milford in August, it is raining for 16 days, with typically 3.07" (78mm) of accumulated precipitation.
• Seaford - August »
  The months with the highest humidity in Seaford are May, August and September, with an average relative humidity of 80%. The months with the most rainfall in Seaford are July and August, with an average 1.06" (27mm) of precipitation.
• Georgetown - August »
  In Georgetown, in August, during 16.5 rainfall days, 3.07" (78mm) of precipitation is typically accumulated. On the last day of August, in Georgetown, sunrise is at 6:29 am and sunset at 7:33 pm EDT.
• Elsmere - August »
  On the last day of August, in Elsmere, Delaware, sunrise is at 6:29 am and sunset at 7:35 pm EDT. In Elsmere, in August, during 14.7 rainfall days, 2.91" (74mm) of precipitation is typically accumulated.
• New Castle - August »
  August is the month with the warmest seawater in New Castle, with an average ocean temperature of 76.3°F (24.6°C). With an average ocean temperature of 76.3°F (24.6°C), August is the month with the warmest seawater in New Castle.
• Lewes - August »
  With an average ocean temperature of 77°F (25°C), August is the month with the warmest seawater in Lewes. The month with the most rainfall in Lewes is August, when the rain falls for 18.2 days and typically aggregates up to 4.13" (105mm) of precipitation.
• Rehoboth Beach - August »
  In Rehoboth Beach, during August, the rain falls for 9.1 days and regularly aggregates up to 0.63" (16mm) of precipitation. In Rehoboth Beach, during August, the rain falls for 9.1 days and regularly aggregates up to 0.63" (16mm) of precipitation.