April weather forecastWilmington, DE
April
Weather in April
April in Wilmington, Delaware, brings forth the radiant buds of spring with noticeable changes from the past month's weather. With rains contributing 2.87" (73mm), it's a season of growth accompanied by a surge in humidity and relative pressure. The most significant transformation comes in the form of daylight hours: the city experiences a whopping 13.3 hours of daylight. Inevitably, the touch of April instigates increased temperatures, which set the stage for the ascendancy of summer arriving in May.Temperature
April in Wilmington, Delaware, brings a rise in the average high-temperature, transitioning from March's chilly 49.3°F (9.6°C) to a refreshing 61.3°F (16.3°C). Wilmington's average low-temperature for the month of April records at a frosty 44.6°F (7°C).Humidity
April is the least humid month in Wilmington, with an average relative humidity of 72%.Rainfall
In Wilmington, in April, it is raining for 16.3 days, with typically 2.87" (73mm) of accumulated precipitation. Throughout the year, in Wilmington, there are 168.9 rainfall days, and 35.55" (903mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In April, it is snowing for 0.4 days. Throughout April, 0.31" (8mm) of snow is accumulated. Throughout the year, there are 21.9 snowfall days, and 12.05" (306mm) of snow is accumulated.Ocean temperature
In Wilmington, in April, the average water temperature is 41°F (5°C).Note: Beware when you're in 41°F (5°C) waters; 55.4°F (13°C) is chilling and anything below 50°F (10°C) could cause breathing hindrance and a sudden cold shock, given your physical condition.
Daylight
In April, the average length of the day in Wilmington is 13h and 17min.On the first day of April in Wilmington, sunrise is at 6:44 am and sunset at 7:26 pm. On the last day of the month, sunrise is at 6:02 am and sunset at 7:55 pm EDT.
Sunshine
The average sunshine in April in Wilmington is 8.5h.UV index
In Wilmington, Delaware, the average daily maximum UV index in April is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: In April, the maximum UV index of 4 suggests these recommendations:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Wilmington, DE
- Average high temperature in April: 61.3°F
The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (37°F).
- Average low temperature in April: 44.6°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 (25.3°F).
Average pressure in April
Wilmington, DE
- Average pressure in April: 29.99"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 April
Wilmington, DE
- Average wind speed in April: 8.5mph
The windiest months (with the highest average wind speed) are January, February and March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).
Average humidity in April
Wilmington, DE
- Average humidity in April: 72%
The month with the highest relative humidity is October (78%).
The month with the lowest relative humidity is April (72%).
Average rainfall in April
Wilmington, DE
- Average rainfall in April: 2.87"
The wettest month (with the highest rainfall) is August (4.09").
The driest month (with the least rainfall) is January (2.36").
Average rainfall days in April
Wilmington, DE
- Average rainfall days in April: 16.3 days
The month with the highest number of rainy days is May (18.7 days).
The month with the least rainy days is November (8.8 days).
Average snowfall in April
Wilmington, DE
- Average snowfall in April: 0.31"
The month with the highest snowfall is March (3.58").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Wilmington, DE
- Average snowfall days in April: 0.4 days
The month with the highest number of snowfall days is January (6.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in April
Wilmington, DE
- Average sea temperature in April: 41°F
The best month for swimming (with the highest average sea temperature) is August (73°F).
The coldest month (with the lowest average sea temperature) is February (34°F).
Average daylight in April /
Average sunshine in April
Wilmington, DE
- Average daylight in April: 13h and 18min
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 April: 8h and 30min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).
Average sunshine days in April
Wilmington, DE
- Average sunshine days in April: 11.9 days
The month with the most sunshine days is November (18.6 days).
The months with the least sunshine days are May and July (9.8 days).
Average UV index in April
Wilmington, DE
- Average UV index in April: 4
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 April
Wilmington, DE
- Average cloud cover in April: 43
The months with the most cloud cover are February and March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in April
Wilmington, DE
- Average visibility in April: 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).
