Wilmington weather in June

In June, Wilmington sees average daytime highs of 81°F and overnight lows near 65°F, with 3.9 in of rain across 10.4 wet days and about 14.8 hours of daylight. It is the 3rd-warmest and 5th-wettest month of the year here.

Highs climb over the month, from about 78°F in the first days to 84°F by the end. The sky is clear or mostly clear about 24% of the time in June, and the air most often feels muggy.

Daylight stretches from about 14 h 36 min at the start of June to 14 h 48 min by month's end. Set against the rest of the year, June is Wilmington's 10th-clearest and 10th-windiest month. For the whole year in context, see Wilmington's year-round climate.

Daytime high
81°
3rd warmest
Overnight low
65°
10th coldest
Rainfall
3.9 in
10.4 wet days
Daylight
14 h 48 min
4:39 AM – 7:26 PM
Cloud cover
62%
10th clearest
Wind
6 mph
10th windiest
Solar energy
6.11 kWh/m²
Travel score
6.0
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 June

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 78°F in the first days to 84°F by the end.

A typical June day in Wilmington reaches about 81°F in the afternoon and slips back to 65°F overnight — a 16°F spread between the day's warmth and the night's chill. On most days the high lands between 73°F and 90°F. Set against its neighbours, June runs about 9°F warmer than May and about 4°F cooler than July.

50°60°70°80°90°151015202530
Avg high (°F)Avg low (°F)
17861
27861
37861
47862
57962
67962
77963
88063
98063
108064
118064
128164
138164
148165
158165
168265
178265
188266
198266
208366
218367
228367
238367
248367
258467
268468
278468
288468
298568
308569

How June really feels in Wilmington

Once humidity and wind are folded in, June 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

June 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 June compares with the rest of the year at a glance. June is the 3rd-warmest and 5th-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 June

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 24% of the time in June.

Beyond those clear spells, partly cloudy skies cover about 20% of June, with mostly cloudy or overcast conditions the remaining 55%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14555
24456
34456
44456
54456
64456
74258
84258
94258
104258
114258
124258
134258
144258
154258
164258
174456
184456
194456
204555
214555
224654
234654
244654
254852
264852
274852
284951
295050
305050

Chance of precipitation in June

Any precipitation

Wilmington gets around 3.9 in of rain over 10.4 wet days in June. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 35% and peaks near 37% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
134
233
333
433
533
633
733
833
933
1034
1134
1234
1335
1435
1536
1636
1736
1836
1937
2037
2137
2237
2336
2436
2536
2636
2735
2835
2935
3035

Humidity in June

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, June lands in the muggy band about 26% of days. Sticky, muggy-or-worse air turns up on roughly 35% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
13921221630
23821221730
33721221830
43621211830
53521211940
63422212040
73322202140
83122202150
93022202260
102923202260
112722202370
122622202480
132422212580
142322212590
152121222690
1620212327100
1718202328110
1817202428110
1916202428120
2015202429120
2114192529130
2213192530130
2312192530140
2411192531140
2510182531150
2610182532150
279182432160
289182432170
298182431181
308182331191

Wind in June

Winds average 6 mph in June.

Across June, daily wind ranges from about 6 mph on the calmest days to 6 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (mph)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

Sunrise & sunset in June

DaylightNight

Daylight runs from about 14 h 36 min at the start of June to 14 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over June. Sunrise moves from 4:42 AM to 4:42 AM, and sunset from 7:18 PM to 7:29 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
114.64:427:18
214.64:417:18
314.64:417:19
414.74:417:20
514.74:407:20
614.74:407:21
714.74:407:22
814.74:397:22
914.74:397:23
1014.74:397:23
1114.84:397:24
1214.84:397:25
1314.84:397:25
1414.84:397:25
1514.84:397:26
1614.84:397:26
1714.84:397:27
1814.84:397:27
1914.84:397:27
2014.84:397:28
2114.84:397:28
2214.84:397:28
2314.84:397:28
2414.84:407:29
2514.84:407:29
2614.84:407:29
2714.84:407:29
2814.84:417:29
2914.84:417:29
3014.84:427:29

Solar energy in June

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in June, about 6.11 kWh/m² — the sunniest month for solar.

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 — June's 6.11 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.0Bright
26.0Bright
36.0Bright
46.0Bright
56.0Bright
66.0Intense
76.0Intense
86.0Intense
96.0Intense
106.0Intense
116.0Intense
126.0Intense
136.1Intense
146.1Intense
156.1Intense
166.1Intense
176.1Intense
186.1Intense
196.1Intense
206.2Intense
216.2Intense
226.2Intense
236.2Intense
246.2Intense
256.2Intense
266.2Intense
276.3Intense
286.3Intense
296.3Intense
306.3Intense
Planning a trip in June

Hazard calendar for Wilmington

In seasonPeak

In June, Wilmington sits inside its atlantic hurricane season. The full year is below, with each hazard's peak months called out.

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 June a good time to visit Wilmington?

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

6.0
Sightseeing
4th-best month of the year
6.5
Beach & pool
3rd-best month of the year

June is a reasonable time to visit Wilmington for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Wilmington in June

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

In June, Wilmington sees daytime highs around 81°F and nights near 65°F. Pack light clothes and sun protection. Worth having: rain gear. About 10 days see rain.

light clothessun protectionrain gear

UV index in Wilmington in June

LowModerateHighVery highExtreme

Clear-sky midday UV in June peaks around 8 (very high — sun protection essential). 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 June

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where June 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
June 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).