April weather forecast
Lewes, DE

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Weather in April

The full bloom of spring arrives in April, bringing mild and pleasant temperatures to Lewes. A significant difference is noted in both the lowest and highest temperatures from March, at 48.6°F (9.2°C) and 57.6°F (14.2°C) respectively. This month heralds a remarkable increase in sea temperature, perfect for a serene stroll on the beaches of Lewes. The delightfully predictable March to April transition brings longer daylight hours and lower wind speed. As spring deepens in April, the weather is an agreeable contrast to the chilly remembrance of winter past.

Temperature

Lewes's weather in April presents a rise in the average high-temperature, moving from a chilly 47.8°F (8.8°C) in March to a refreshing 57.6°F (14.2°C). Lewes, during April nights, witnesses an average temperature marginally cooler than its daytime highs, at a frosty 48.6°F (9.2°C).

Humidity

In April, the average relative humidity is 76%.

Rainfall

In Lewes, Delaware, in April, during 15.6 rainfall days, 2.56" (65mm) of precipitation is typically accumulated. In Lewes, during the entire year, the rain falls for 173.6 days and collects up to 36.97" (939mm) of precipitation.

Snowfall

In Lewes, Delaware, snow does not fall in April through October.

Ocean temperature

In April, the average ocean temperature is 48.4°F (9.1°C).
Note: While a brief time in 48.4°F (9.1°C) at 55.4°F (13°C) is already bracing, plunging below 50°F (10°C) can severely affect breathing and introduce a cold shock, relying on your physical state.

Daylight

The average length of the day in April is 13h and 14min.
On the first day of the month, sunrise is at 6:43 am and sunset at 7:24 pm. On the last day of April, sunrise is at 6:03 am and sunset at 7:52 pm EDT.

Sunshine

In Lewes, the average sunshine in April is 9h.

UV index

In Lewes, Delaware, the average daily maximum UV index in April is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A maximum UV index of 4 in April translates into the following recommendations:
Be vigilant - A duty to shield skin and eyes from injury exists. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Stay sun-safe with clothing that is both closely woven and worn loosely.
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Frequently asked questions

What are the temperatures in Lewes in April?

The high-temperature, in April, in Lewes, is 57.6°F (14.2°C), while the low-temperature averages to 48.6°F (9.2°C).

What is the average humidity in April in Lewes?

The average relative humidity in April in Lewes is 76%.

How many days does it rain in April in Lewes?

In April, in Lewes, Delaware, the rain falls for 15.6 days. Throughout April, 2.56" (65mm) of precipitation is accumulated.

When it does not snow in Lewes?

April through October are months without snowfall.

Does it snow in Lewes in April?

In April, in Lewes, it doesn't snow. March is the latest month when it typically snows.

How cold is the water in April in Lewes?

In April, the average ocean temperature in Lewes, Delaware, is 48.4°F (9.1°C). Swimming in 48.4°F (9.1°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

What is the average length of the day in April in Lewes?

In Lewes, the average day length in April is 13h and 14min.

What time are sunrise and sunset in April in Lewes?

In April, on the first day of the month, sunrise is at 6:43 am and sunset at 7:24 pm. On the last day of the month, in Lewes, sunrise is at 6:03 am and sunset at 7:52 pm EDT.

How long on average sun shines in April in Lewes?

In April, the average sunshine duration in Lewes is 9h.

How high is the UV index in April in Lewes?

The average daily maximum UV index in April in Lewes, Delaware, is 4. A UV Index reading of 3 to 5 represents a medium health risk from unsafe exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJFMAprilMJJASOND
Mar
April
May
Average high temperature
47.8°F 8.8°C
57.6°F 14.2°C
66.4°F 19.1°C
Average low temperature
39.6°F 4.2°C
48.6°F 9.2°C
58.1°F 14.5°C
Average pressure
30.07" 764mmHg
30" 762mmHg
30.02" 763mmHg
Average wind speed
12.1mph 19.5km/h
11.9mph 19.2km/h
10.2mph 16.4km/h
Average max. wind speed
12.9mph 20.8km/h
12.8mph 20.6km/h
10.9mph 17.5km/h
Average wind speed gusts
19.8mph 31.9km/h
20.6mph 33.2km/h
17.5mph 28.2km/h
Average humidity
75%
76%
81%
Average rainfall
2.99" 76mm
2.56" 65mm
3.35" 85mm
Average rainfall days
15.1
15.6
18.2
Average snowfall
0.55" 14mm
0" 0mm
0" 0mm
Average snowfall days
1.6
0
0
Average sea temperature
42.3°F 5.7°C
48.5°F 9.2°C
56.8°F 13.8°C
Average daylight
12h 0min
13h 1min
14h 2min
Average sunshine
6h 5min
9h 0min
9h 2min
Average sunshine days
13.8
12.8
9.8
Average UV index
3
4
6
Average cloud cover
44%
39%
38%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in April
Lewes, DE

Average temperature in April - Lewes, DE
  • Average high temperature in April: 57.6°F

The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (41.2°F).

  • Average low temperature in April: 48.6°F

The month with the highest average low temperature is July (73°F).
The coldest month (with the lowest average low temperature) is January (32°F).

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Average pressure in April
Lewes, DE

Average pressure in April - Lewes, DE
  • Average pressure in April: 30"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 April
Lewes, DE

Average wind speed in April - Lewes, DE
  • Average wind speed in April: 11.9mph

The windiest month (with the highest average wind speed) is January (12.5mph).
The calmest month (with the lowest average wind speed) is August (8.3mph).

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Average humidity in April
Lewes, DE

Average humidity in April - Lewes, DE
  • Average humidity in April: 76%

The month with the highest relative humidity is May (81%).
The month with the lowest relative humidity is November (73%).

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Average rainfall in April
Lewes, DE

Average rainfall in April - Lewes, DE
  • Average rainfall in April: 2.56"

The wettest month (with the highest rainfall) is August (4.13").
The driest month (with the least rainfall) is January (2.2").

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Average rainfall days in April
Lewes, DE

Average rainfall days in April - Lewes, DE
  • Average rainfall days in April: 15.6 days

The month with the highest number of rainy days is July (18.6 days).
The month with the least rainy days is January (9.6 days).

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Average snowfall in April
Lewes, DE

Average snowfall in April - Lewes, DE
  • Average snowfall in April: 0"

The month with the highest snowfall is January (0.98").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in April
Lewes, DE

Average snowfall days in April - Lewes, DE
  • Average snowfall days in April: 0 days

The month with the highest number of snowfall days is January (3.7 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average sea temperature in April
Lewes, DE

Average sea temperature in April - Lewes, DE
  • Average sea temperature in April: 48.5°F

The best month for swimming (with the highest average sea temperature) is August (76.9°F).
The coldest month (with the lowest average sea temperature) is February (40.7°F).

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Average daylight in April /
Average sunshine in April
Lewes, DE

Average daylight in April / Average sunshine in April - Lewes, DE
  • Average daylight in April: 13h and 1min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in April: 9h

The month with the most sunshine is July (Average sunshine: 11h).
The month with the least sunshine is February (Average sunshine: 5h).

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Average sunshine days in April
Lewes, DE

Average sunshine days in April - Lewes, DE
  • Average sunshine days in April: 12.8 days

The month with the most sunshine days is November (17.6 days).
The month with the least sunshine days is May (9.8 days).

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Average UV index in April
Lewes, DE

Average UV index in April - Lewes, 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 and December (UV index 2).

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Average cloud cover in April
Lewes, DE

Average cloud cover in April - Lewes, DE
  • Average cloud cover in April: 39

The months with the most cloud cover are February and March (Cloud cover 44).
The month with the least cloud cover is July (Cloud cover 26).

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Average visibility in April
Lewes, DE

Average visibility in April - Lewes, 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).

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Lewes, Delaware, USA

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