April weather forecast
Deer Isle, ME

Weather in April

April is a frosty spring month in Deer Isle, Maine, with an average temperature fluctuating between 46°F (7.8°C) and 37.2°F (2.9°C).

Temperature

In Deer Isle, the average high-temperature in April rises from a cold 37°F (2.8°C) in March to a chilly 46°F (7.8°C). In April, the average low-temperature is 37.2°F (2.9°C).

Humidity

In April, the average relative humidity in Deer Isle is 79%.

Rainfall

In Deer Isle, in April, during 11.7 rainfall days, 1.69" (43mm) of precipitation is typically accumulated. Throughout the year, in Deer Isle, there are 115.5 rainfall days, and 17.95" (456mm) of precipitation is accumulated.

Snowfall

January through April, October through December are months with snowfall in Deer Isle. April is the last month it regularly snows in Deer Isle. During 1.8 snowfall days, Deer Isle aggregates 0.91" (23mm) of snow. Throughout the year, there are 29.2 snowfall days, and 9.65" (245mm) of snow is accumulated.

Ocean temperature

In Deer Isle, Maine, the average water temperature is 40.6°F (4.8°C).
Note: For swimming, this is considered life-threatening and very dangerous. The water feels painfully cold, and hyperventilation quickly occurs. A specialized swimsuit is mandatory to reduce thermal damage.

Daylight

The average length of the day in April is 13h and 29min.
On the first day of April, sunrise is at 6:15 am and sunset at 7:01 pm. On the last day of the month, sunrise is at 5:26 am and sunset at 7:37 pm EDT.

Sunshine

In Deer Isle, the average sunshine in April is 7.6h.

UV index

In April, the average daily maximum UV index in Deer Isle is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 3 in April transform into the following instructions:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in April in Deer Isle?

In April, the average high-temperature is 46°F (7.8°C), and the average low-temperature is 37.2°F (2.9°C).

What is the average humidity in April in Deer Isle?

The average relative humidity in April in Deer Isle, Maine, is 79%.

How many days does it rain in April in Deer Isle?

In April, the rain falls for 11.7 days. Throughout April, 1.69" (43mm) of precipitation is accumulated.

What is the last month it snows in Deer Isle?

April is the last month it regularly snows in Deer Isle, Maine. During 1.8 snowfall days, in April, Deer Isle aggregates 0.91" (23mm) of snow.

What is the water temperature in April in Deer Isle?

In Deer Isle, the average seawater temperature in April is 40.6°F (4.8°C). For swimming, this is considered very dangerous and immediately life-threatening. Total loss of breathing control instantly occurs, and clear thinking becomes almost impossible. A specialized swimsuit is obligatory to minimize thermal loss.

What is the average length of the day in April in Deer Isle?

In Deer Isle, Maine, the average day length in April is 13h and 29min.

What time are sunrise and sunset in April in Deer Isle?

In April, on the first day of the month, sunrise is at 6:15 am and sunset at 7:01 pm. On the last day of the month, in Deer Isle, Maine, sunrise is at 5:26 am and sunset at 7:37 pm EDT.

How long on average sun shines in April in Deer Isle?

The average sunshine duration in April in Deer Isle, Maine, is 7.6h.

What is the UV index reading in April in Deer Isle?

The average daily maximum UV index in April is 3. A UV Index reading of 3 to 5 represents a medium hazard to health from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in April
Deer Isle, ME

Average temperature in April - Deer Isle, ME
  • Average high temperature in April: 46°F

The warmest month (with the highest average high temperature) is August (68.9°F).
The month with the lowest average high temperature is January (31.5°F).

  • Average low temperature in April: 37.2°F

The month with the highest average low temperature is August (59.9°F).
The coldest month (with the lowest average low temperature) is January (21°F).

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Average pressure in April
Deer Isle, ME

Average pressure in April - Deer Isle, ME
  • Average pressure in April: 29.95"Hg

The month with the highest atmospheric pressure is September (30.04"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in April
Deer Isle, ME

Average wind speed in April - Deer Isle, ME
  • Average wind speed in April: 11.7mph

The windiest month (with the highest average wind speed) is January (14.4mph).
The calmest months (with the lowest average wind speed) are July and August (7.8mph).

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Average humidity in April
Deer Isle, ME

Average humidity in April - Deer Isle, ME
  • Average humidity in April: 79%

The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is November (76%).

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Average rainfall in April
Deer Isle, ME

Average rainfall in April - Deer Isle, ME
  • Average rainfall in April: 1.69"

The wettest month (with the highest rainfall) is October (2.09").
The driest month (with the least rainfall) is September (0.91").

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Average rainfall days in April
Deer Isle, ME

Average rainfall days in April - Deer Isle, ME
  • Average rainfall days in April: 11.7 days

The month with the highest number of rainy days is July (12.8 days).
The month with the least rainy days is February (5.3 days).

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Average snowfall in April
Deer Isle, ME

Average snowfall in April - Deer Isle, ME
  • Average snowfall in April: 0.91"

The month with the highest snowfall is February (2.32").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in April
Deer Isle, ME

Average snowfall days in April - Deer Isle, ME
  • Average snowfall days in April: 1.8 days

The month with the highest number of snowfall days is January (7.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average sea temperature in April
Deer Isle, ME

Average sea temperature in April - Deer Isle, ME
  • Average sea temperature in April: 40.6°F

The best month for swimming (with the highest average sea temperature) is August (58.6°F).
The coldest month (with the lowest average sea temperature) is March (38.2°F).

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Average daylight in April /
Average sunshine in April
Deer Isle, ME

Average daylight in April / Average sunshine in April - Deer Isle, ME
  • Average daylight in April: 13h and 29min

The month with the longest days is June (Average daylight: 15h and 28min).
The month with the shortest days is December (Average daylight: 8h and 56min).

  • Average sunshine in April: 7h and 36min

The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 4h and 30min).

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Average sunshine days in April
Deer Isle, ME

Average sunshine days in April - Deer Isle, ME
  • Average sunshine days in April: 15.5 days

The month with the most sunshine days is September (19.9 days).
The month with the least sunshine days is July (15.4 days).

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Average UV index in April
Deer Isle, ME

Average UV index in April - Deer Isle, ME
  • Average UV index in April: 3

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

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Average cloud cover in April
Deer Isle, ME

Average cloud cover in April - Deer Isle, ME
  • Average cloud cover in April: 51

The months with the most cloud cover are February and March (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 31).

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Average visibility in April
Deer Isle, ME

Average visibility in April - Deer Isle, ME
  • 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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