Wilmington weather in April

In April, Wilmington sees average daytime highs of 63°F and overnight lows near 46°F, with 3.6 in of precipitation across 10.5 wet days and about 13 hours of daylight. It is the 7th-warmest and 7th-wettest month of the year here.

Highs climb over the month, from about 59°F in the first days to 67°F by the end. The sky is clear or mostly clear about 27% of the time in April, and the air most often feels dry.

Daylight stretches from about 12 h 24 min at the start of April to 13 h 36 min by month's end. Set against the rest of the year, April is Wilmington's 9th-clearest and 4th-windiest month. For the whole year in context, see Wilmington's year-round climate.

Daytime high
63°
7th warmest
Overnight low
46°
6th coldest
Precipitation
3.6 in
10.5 wet days
Daylight
13 hours
5:31 AM – 6:34 PM
Cloud cover
62%
9th clearest
Wind
8 mph
4th windiest
Solar energy
5.15 kWh/m²
Travel score
5.4
out of 10

Wilmington is seat of New Castle County, and largest city in Delaware, United States.

Density
1,615/km²
people per km²
Founded
1638

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in April

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 59°F in the first days to 67°F by the end.

A typical April day in Wilmington reaches about 63°F in the afternoon and slips back to 46°F overnight — a 17°F spread between the day's warmth and the night's chill. On most days the high lands between 51°F and 76°F. Set against its neighbours, April runs about 12°F warmer than March and about 9°F cooler than May.

20°40°60°80°151015202530
Avg high (°F)Avg low (°F)
15841
25842
35942
45942
56042
66043
76043
86144
96144
106244
116245
126245
136345
146346
156446
166446
176447
186547
196547
206548
216548
226648
236649
246649
256749
266749
276750
286750
296850
306851

How April really feels in Wilmington

Once humidity and wind are folded in, April averages 0 days that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F
0
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

April sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Wilmington weather by month

How April compares with the rest of the year at a glance. April is the 7th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan41° / 28°3.29.23.69.50.1
Feb43° / 29°3.08.73.210.40.6
Mar52° / 36°4.110.72.111.72.7
Apr63° / 46°3.610.50.3135.4
May73° / 55°3.510.9014.26.5
Jun81° / 65°3.910.4014.86.0
Jul86° / 70°3.910.9014.55.0
Aug83° / 68°3.910.4013.65.6
Sep77° / 61°4.29.6012.36.9
Oct66° / 50°3.68.1010.96.3
Nov55° / 40°3.07.90.29.83.6
Dec45° / 33°3.991.99.21.1

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 27% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 17% of April, with mostly cloudy or overcast conditions the remaining 56%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14159
24258
34357
44357
54357
64456
74456
84456
94654
104654
114555
124555
134654
144555
154456
164456
174357
184357
194357
204357
214456
224357
234357
244258
254357
264357
274357
284456
294456
304654

Chance of precipitation in April

Any precipitationSnow

Wilmington gets around 3.6 in of rain and snow over 10.5 wet days in April. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 35% and peaks near 37% on the wettest days, and about 0 day brings snow.

0%10%20%30%40%50%151015202530
Rain chance (%)Snow chance (%)
1372
2372
3372
4372
5372
6372
7362
8362
9361
10351
11351
12351
13351
14351
15351
16351
17361
18360
19360
20350
21350
22350
23350
24350
25350
26340
27340
28340
29340
30340

Humidity in April

DryComfortableHumidMuggyOppressiveMiserable

Most of April feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, April lands in the dry band about 91% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
197210
297210
397210
496310
596310
696310
795410
895410
995410
1094510
1194510
1292620
1392620
1491720
1591720
1691720
1790820
1889830
1989830
2089830
2189830
2288930
2388930
2487931
25861031
26851041
27841141
28841141
29831241
30821251

Wind in April

Winds average 8 mph in April.

Across April, daily wind ranges from about 7 mph on the calmest days to 8 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (mph)Feels
18light breeze
28light breeze
38light breeze
48light breeze
58light breeze
68light breeze
78light breeze
88light breeze
98light breeze
108light breeze
118light breeze
128light breeze
138light breeze
148light breeze
158light breeze
168light breeze
178light breeze
188light breeze
198light breeze
208light breeze
218light breeze
227light breeze
237light breeze
247calm
257calm
267calm
277calm
287calm
297calm
307calm

Sunrise & sunset in April

DaylightNight

Daylight runs from about 12 h 24 min at the start of April to 13 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 72 minutes over April. Sunrise moves from 5:55 AM to 5:11 AM, and sunset from 6:19 PM to 6:48 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.45:556:19
212.45:536:20
312.55:526:21
412.55:506:22
512.65:496:23
612.65:476:24
712.75:456:25
812.75:446:26
912.75:426:27
1012.85:406:28
1112.85:396:29
1212.95:376:30
1312.95:366:31
1413.05:346:32
1513.05:336:33
1613.05:316:34
1713.15:306:35
1813.15:286:36
1913.25:266:37
2013.25:256:38
2113.35:246:39
2213.35:226:40
2313.35:216:41
2413.45:196:42
2513.45:186:43
2613.55:166:44
2713.55:156:45
2813.55:146:46
2913.65:126:47
3013.65:116:48

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 5.15 kWh/m².

For context, solar energy here swings from a low near 1.85 kWh/m² to a high of 6.11 kWh/m² in June across the year — April's 5.15 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.7Bright
44.7Bright
54.8Bright
64.8Bright
74.9Bright
84.9Bright
95.0Bright
105.0Bright
115.0Bright
125.0Bright
135.1Bright
145.1Bright
155.1Bright
165.2Bright
175.2Bright
185.2Bright
195.2Bright
205.3Bright
215.3Bright
225.3Bright
235.3Bright
245.3Bright
255.4Bright
265.4Bright
275.4Bright
285.4Bright
295.4Bright
305.5Bright
Planning a trip in April

Hazard calendar for Wilmington

In seasonPeak

None of Wilmington's seasonal hazards are active in April. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Wilmington sits in the Atlantic hurricane belt; the season peaks August–October.

Atlantic hurricane
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is April a good time to visit Wilmington?

Our two travel scores rate April for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

5.4
Sightseeing
6th-best month of the year
1.6
Beach & pool
7th-best month of the year

April is a reasonable time to visit Wilmington for sightseeing.

What to pack for Wilmington in April

From April's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In April, Wilmington sees daytime highs around 63°F and nights near 46°F. Worth packing: a warm layer, rain gear and sun protection. About 11 days see rain.

a warm layerrain gearsun protection

UV index in Wilmington in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Wilmington peaks around July 11 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateLowJul 11UV 8Dec 20UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May8Very high
Jun8Very high
Jul9Very high
Aug6High
Sep6High
Oct4Moderate
Nov3Moderate
Dec2Low

Air quality in Wilmington in April

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where April falls, not just the annual average.

Air quality in Wilmington is worst in July — around 17 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (November, 8 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1317 µg/m³Nov 128 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb12Good
Mar13Moderate
Apr13Moderate
May15Moderate
Jun16Moderate
Jul17Moderate
Aug14Moderate
Sep12Good
Oct9Good
Nov8Good
Dec9Good
Location & terrain

Where is Wilmington?

Wilmington sits at 39.7°N, 75.5°W, 92 ft above sea level, in United States. The nearest listed city is Bear, 9.9 mi away.

Topography around Wilmington

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Wilmington.

Within 2 miles, the terrain around Wilmington has only modest variations in elevation — a maximum elevation change of 364 ft around an average of 82 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 545 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,483 ft.

The land around Wilmington is covered by artificial surfaces (47%) and trees (32%) within 2 miles, trees (51%) within 10 miles, and trees (53%) within 50 miles.

2 miles
364 ft
10 miles
545 ft
50 miles
1,483 ft
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
April weather nearby: Bear 9.9 mi · Newark 12 mi · Chester 12 mi · West Chester 15 mi · Springfield 17 mi · Elkton 18 mi · Drexel Hill 19 mi · Havertown 21 mi

United States travel facts

Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 100% of US
price level, 2025
GDP per capita
$90,027
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
5.8
per 100k, 2023
Road deaths
12.7
per 100k/yr, 2019
Income group
High
World Bank
Religion
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Wilmington (39.746°, -75.5466°, elevation 92 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).