June weather forecast
Wilmington, DE

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Bright neon lights light up the Central Business District of Wilmington, Delaware, with a scenic reflection in the Christian River
Bright neon lights light up the Central Business District of Wilmington, Delaware, with a scenic reflection in the Christian River

Weather in June

June ushers in summer in Wilmington with its characteristic lengthy days, elevated temperatures and intensified sunlight. The peak summer month, it presents Wilmington with a high temperature of 79.5°F (26.4°C). A substantial rise in sea temperature contributes to the overall coziness of the month, inviting beachgoers. As June progresses into July, even warmer temperatures and continued sunshine are expected.

Temperature

Wilmington observes a slight uplift in the average high-temperature with the onset of June, adjusting from May's pleasant 71.6°F (22°C) to a warm 79.5°F (26.4°C). Nighttime temperature experiences an average drop to an enjoyable 62.8°F (17.1°C) in June.

Humidity

In Wilmington, the average relative humidity in June is 75%.

Rainfall

In Wilmington, Delaware, during June, the rain falls for 17.5 days and regularly aggregates up to 3.07" (78mm) of precipitation. In Wilmington, during the entire year, the rain falls for 168.9 days and collects up to 35.55" (903mm) of precipitation.

Snowfall

In Wilmington, snow does not fall in June through September.

Ocean temperature

In June, the average ocean temperature in Wilmington, Delaware, is 60.8°F (16°C).
Note: In water with a temperature of 60.8°F (16°C), swimming is not a joy for most people. The challenge of controlling breathing increases as the temperature dips from 69.8°F (21°C) to 59°F (15°C).

Daylight

The month with the longest days is June, with an average of 14h and 54min of daylight.
On the first day of June in Wilmington, sunrise is at 5:35 am and sunset at 8:24 pm. On the last day of the month, sunrise is at 5:37 am and sunset at 8:34 pm EDT.

Sunshine

The average sunshine in June is 10h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index in Wilmington. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: An average UV index of 6 in June transforms into this advice:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
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Frequently asked questions

What are the temperatures in Wilmington in June?

Wilmington in June has an average high-temperature of 79.5°F (26.4°C) and an average low-temperature of 62.8°F (17.1°C).

What is the average humidity in June in Wilmington?

The average relative humidity in June in Wilmington is 75%.

How much does it rain in Wilmington in June?

In Wilmington, Delaware, in June, it is raining for 17.5 days, with typically 3.07" (78mm) of accumulated precipitation.

When it does not snow in Wilmington?

In Wilmington, Delaware, snow does not fall in June through September.

Does it snow in Wilmington in June?

In June, in Wilmington, Delaware, it doesn't snow. May is the latest month when it typically snows.

What is the ocean temperature in June in Wilmington?

In June, the average ocean temperature is 60.8°F (16°C). Swimming in 60.8°F (16°C) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F (21°C).

When are the longest days in Wilmington?

With an average of 14h and 54min of daylight, June has the longest days of the year in Wilmington.

How many hours of daylight does Wilmington have in June?

In June, the average day length is 14h and 56min.

When is the sunrise / sunset in June in Wilmington?

In June, on the first day of the month, sunrise is at 5:35 am and sunset at 8:24 pm. On the last day of the month, in Wilmington, sunrise is at 5:37 am and sunset at 8:34 pm EDT.

How long on average sun shines in June in Wilmington?

In Wilmington, the average sunshine duration in June is 10h.

When is the highest UV index in Wilmington?

The months with the highest UV index in Wilmington, Delaware, are May through August, with an average maximum UV index of 6.

What is the UV index reading in June in Wilmington?

In Wilmington, Delaware, the average daily maximum UV index in June is 6. A UV Index estimate of 6 to 7 represents a high health threat from exposure to the Sun's UV radiation.
Today
Tomorrow
Long-term
YearJFMAMJuneJASOND
May
June
Jul
Average high temperature
71.6°F 22°C
79.5°F 26.4°C
84.9°F 29.4°C
Average low temperature
54.5°F 12.5°C
62.8°F 17.1°C
68.4°F 20.2°C
Average pressure
30.01" 762mmHg
29.94" 760mmHg
29.96" 761mmHg
Average wind speed
6.8mph 10.9km/h
6.3mph 10.1km/h
5.5mph 8.9km/h
Average max. wind speed
7.3mph 11.7km/h
6.9mph 11.1km/h
6mph 9.7km/h
Average wind speed gusts
10.4mph 16.7km/h
9.8mph 15.8km/h
8.5mph 13.7km/h
Average humidity
77%
75%
74%
Average rainfall
3.19" 81mm
3.07" 78mm
3.58" 91mm
Average rainfall days
18.7
17.5
18.5
Average snowfall
0.12" 3mm
0" 0mm
0" 0mm
Average snowfall days
0.1
0
0
Average sea temperature
50°F 10°C
61°F 16.1°C
70°F 21.1°C
Average daylight
14h 2min
14h 5min
14h 4min
Average sunshine
8h 4min
10h 0min
10h 4min
Average sunshine days
9.8
9.9
9.8
Average UV index
6
6
6
Average cloud cover
46%
36%
31%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in June
Wilmington, DE

Average temperature in June - Wilmington, DE
  • Average high temperature in June: 79.5°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 June: 62.8°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).

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Average pressure in June
Wilmington, DE

Average pressure in June - Wilmington, DE
  • Average pressure in June: 29.94"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).

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Average wind speed in June
Wilmington, DE

Average wind speed in June - Wilmington, DE
  • Average wind speed in June: 6.3mph

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).

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Average humidity in June
Wilmington, DE

Average humidity in June - Wilmington, DE
  • Average humidity in June: 75%

The month with the highest relative humidity is October (78%).
The month with the lowest relative humidity is April (72%).

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Average rainfall in June
Wilmington, DE

Average rainfall in June - Wilmington, DE
  • Average rainfall in June: 3.07"

The wettest month (with the highest rainfall) is August (4.09").
The driest month (with the least rainfall) is January (2.36").

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Average rainfall days in June
Wilmington, DE

Average rainfall days in June - Wilmington, DE
  • Average rainfall days in June: 17.5 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).

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Average snowfall in June
Wilmington, DE

Average snowfall in June - Wilmington, DE
  • Average snowfall in June: 0"

The month with the highest snowfall is March (3.58").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in June
Wilmington, DE

Average snowfall days in June - Wilmington, DE
  • Average snowfall days in June: 0 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).

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Average sea temperature in June
Wilmington, DE

Average sea temperature in June - Wilmington, DE
  • Average sea temperature in June: 61°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).

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Average daylight in June /
Average sunshine in June
Wilmington, DE

Average daylight in June / Average sunshine in June - Wilmington, DE
  • Average daylight in June: 14h and 5min

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 June: 10h and 0min

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).

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Average sunshine days in June
Wilmington, DE

Average sunshine days in June - Wilmington, DE
  • Average sunshine days in June: 9.9 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).

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Average UV index in June
Wilmington, DE

Average UV index in June - Wilmington, DE
  • Average UV index in June: 6

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).

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Average cloud cover in June
Wilmington, DE

Average cloud cover in June - Wilmington, DE
  • Average cloud cover in June: 36

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).

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Average visibility in June
Wilmington, DE

Average visibility in June - Wilmington, DE
  • Average visibility in June: 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).

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Wilmington, Delaware, USA

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