May weather forecast and climate
Delaware City, DE

Weather in May

The last month of the spring, May, is an agreeable month in Delaware City, Delaware, with temperature in the range of an average low of 55°F (12.8°C) and an average high of 72°F (22.2°C).

Temperature

In Delaware City, the average high-temperature in May rises, from an enjoyable 62.4°F (16.9°C) in April, to an agreeable 72°F (22.2°C). In Delaware City, the average low-temperature is 55°F (12.8°C).

Humidity

In Delaware City, Delaware, the average relative humidity is 77%.

Rainfall

In Delaware City, in May, it is raining for 16.4 days, with typically 2.17" (55mm) of accumulated precipitation. In Delaware City, during the entire year, the rain falls for 145.9 days and collects up to 24.45" (621mm) of precipitation.

Snowfall

May through October are months without snowfall in Delaware City.

Ocean temperature

In Delaware City, in May, the average water temperature is 54°F (12.2°C).
Note: Swimming in 54°F (12.2°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

Daylight

The average length of the day in Delaware City is 14.4h.

Sunshine

In May, the average sunshine is 8.7h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health vulnerability from the exposure to the Sun's UV rays for average individuals.
Note: The average daily UV index of 6 transform into the following instructions:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the average humidity in May in Delaware City?

The average relative humidity in May in Delaware City is 77%.

How many days does it rain in May in Delaware City?

In Delaware City, in May, during 16.4 rainfall days, 2.17" (55mm) of precipitation is typically accumulated.

When it does not snow in Delaware City?

In Delaware City snow does not fall in May through October.

Does it snow in Delaware City in May?

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

How cold is the water in May in Delaware City?

In May, the average ocean temperature in Delaware City, Delaware, is 54°F (12.2°C). Swimming in 54°F (12.2°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

How many hours of daylight does Delaware City have in May?

In May, the average length of the day is 14.4h.

How long on average sun shines in May in Delaware City?

The average sunshine in May in Delaware City, Delaware, is 8.7h.

What is the month with the highest UV index in Delaware City?

Months with the highest UV index are May through August, with an average maximum UV index of 6.

What is the UV index reading in May in Delaware City?

In May, the average daily maximum UV index in Delaware City is 6. A UV Index of 6 to 7 symbolizes a high health threat from the exposure to the Sun's UV radiation.

Average temperature in May
Delaware City, DE

Average temperature in May - Delaware City, DE
  • Average high temperature in May: 72°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (38.3°F).

  • Average low temperature in May: 55°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 (26.8°F).

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Average pressure in May
Delaware City, DE

Average pressure in May - Delaware City, DE
  • Average pressure in May: 30.01"

The month with the highest atmospheric pressure is November (30.13").
The month with the lowest atmospheric pressure is June (29.94").

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Average wind speed in May
Delaware City, DE

Average wind speed in May - Delaware City, DE
  • Average wind speed in May: 7.1mph

The windiest months (with the highest average wind speed) are February and March (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

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Average humidity in May
Delaware City, DE

Average humidity in May - Delaware City, DE
  • Average humidity in May: 77%

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 May
Delaware City, DE

Average rainfall in May - Delaware City, DE
  • Average rainfall in May: 2.17"

The wettest month (with the highest rainfall) is August (3.11").
The driest month (with the least rainfall) is January (1.54").

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Average rainfall days in May
Delaware City, DE

Average rainfall days in May - Delaware City, DE
  • Average rainfall days in May: 16.4 days

The month with the highest number of rainy days is May (16.4 days).
The month with the least rainy days is January (7.8 days).

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Average snowfall in May
Delaware City, DE

Average snowfall in May - Delaware City, DE
  • Average snowfall in May: 0"

The month with the highest snowfall is January (1.65").
Months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in May
Delaware City, DE

Average snowfall days in May - Delaware City, DE
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (4.3 days).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average sea temperature in May
Delaware City, DE

Average sea temperature in May - Delaware City, DE
  • Average sea temperature in May: 53.9°F

The best month for swimming (with the highest average sea temperature) is August (76.3°F).
The coldest month (with the lowest average sea temperature) is February (40.9°F).

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Average daylight in May /
Average sunshine in May
Delaware City, DE

Average daylight in May / Average sunshine in May - Delaware City, DE
  • Average daylight in May: 14.4h

The month with the longest days is June (Average daylight: 14.9h).
The month with the shortest days is December (Average daylight: 9.4h).

  • Average sunshine in May: 8.7h

The month with the most sunshine is July (Average sunshine: 10.7h).
The month with the least sunshine is February (Average sunshine: 4.9h).

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Average sunshine days in May
Delaware City, DE

Average sunshine days in May - Delaware City, DE
  • Average sunshine days in May: 11.8 days

The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is May (11.8 days).

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Average UV index in May
Delaware City, DE

Average UV index in May - Delaware City, DE
  • Average UV index in May: 6

Months with the highest UV index are May, June, July and August (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in May
Delaware City, DE

Average cloud cover in May - Delaware City, DE
  • Average cloud cover in May: 45

Months with the most cloud cover are February and March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 30).

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Average visibility in May
Delaware City, DE

Average visibility in May - Delaware City, DE
  • Average visibility in May: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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