April weather forecast
Belfast, ME

Weather in April

April is a chilly spring month in Belfast, Maine, with an average temperature varying between 48.9°F (9.4°C) and 34.5°F (1.4°C).

Temperature

In Belfast, Maine, the average high-temperature in April rises from a cold 37°F (2.8°C) in March to a frosty 48.9°F (9.4°C). The average low-temperature, is 34.5°F (1.4°C).

Humidity

The average relative humidity in April is 78%.

Rainfall

In Belfast, Maine, it is raining for 15 days, with typically 2.64" (67mm) of accumulated precipitation. Throughout the year, in Belfast, there are 141.1 rainfall days, and 24.29" (617mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Belfast, Maine, are January through May, October through December. In Belfast, during April, snow falls for 2.9 days and regularly aggregates up to 2.17" (55mm) of snow. In Belfast, during the entire year, snow falls for 44.3 days and aggregates up to 16.81" (427mm) of snow.

Ocean temperature

In Belfast, the average seawater temperature in April is 40.6°F (4.8°C).
Note: For swimming, this is considered extremely cold, dangerous, and life-threatening. Unless suitably protected with insulated waterproof clothing, hypothermia quickly occurs.

Daylight

The average length of the day in April in Belfast is 13h and 30min.
On the first day of the month, sunrise is at 6:16 am and sunset at 7:03 pm. On the last day of April, in Belfast, sunrise is at 5:27 am and sunset at 7:38 pm EDT.

Sunshine

In April, the average sunshine is 7.1h.

UV index

In April, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 3 in April interpret into the following advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the average humidity in April in Belfast?

In April, the average relative humidity in Belfast is 78%.

How many days does it rain in April in Belfast?

In Belfast, in April, it is raining for 15 days, with typically 2.64" (67mm) of accumulated precipitation.

How much does it snow in Belfast in April?

In Belfast, Maine, during April, snow falls for 2.9 days and regularly aggregates up to 2.17" (55mm) of snow.

What is the water temperature in April in Belfast?

In Belfast, Maine, 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.

How many hours of daylight does Belfast have in April?

In April, the average day length in Belfast is 13h and 30min.

What time are sunrise and sunset in April in Belfast?

On the first day of April in Belfast, sunrise is at 6:16 am and sunset at 7:03 pm. On the last day of the month, sunrise is at 5:27 am and sunset at 7:38 pm EDT.

How many hours of sunshine does Belfast have in April?

In Belfast, Maine, the average sunshine duration in April is 7.1h.

What is the UV index reading in April in Belfast?

In April, the average daily maximum UV index in Belfast is 3. A UV Index reading of 3 to 5 represents a medium health risk from unprotected exposure to 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
Belfast, ME

Average temperature in April - Belfast, ME
  • Average high temperature in April: 48.9°F

The warmest months (with the highest average high temperature) are July and August (73.9°F).
The month with the lowest average high temperature is January (28.4°F).

  • Average low temperature in April: 34.5°F

The month with the highest average low temperature is July (57.7°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).

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Average pressure in April
Belfast, ME

Average pressure in April - Belfast, 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
Belfast, ME

Average wind speed in April - Belfast, ME
  • Average wind speed in April: 9.1mph

The windiest month (with the highest average wind speed) is March (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).

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Average humidity in April
Belfast, ME

Average humidity in April - Belfast, ME
  • Average humidity in April: 78%

The months with the highest relative humidity are February and July (83%).
The month with the lowest relative humidity is November (77%).

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Average rainfall in April
Belfast, ME

Average rainfall in April - Belfast, ME
  • Average rainfall in April: 2.64"

The wettest month (with the highest rainfall) is December (2.72").
The driest months (with the least rainfall) are July and September (1.46").

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Average rainfall days in April
Belfast, ME

Average rainfall days in April - Belfast, ME
  • Average rainfall days in April: 15 days

The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is February (7.1 days).

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Average snowfall in April
Belfast, ME

Average snowfall in April - Belfast, ME
  • Average snowfall in April: 2.17"

The month with the highest snowfall is January (4.57").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in April
Belfast, ME

Average snowfall days in April - Belfast, ME
  • Average snowfall days in April: 2.9 days

The month with the highest number of snowfall days is January (10.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average sea temperature in April
Belfast, ME

Average sea temperature in April - Belfast, ME
  • Average sea temperature in April: 40.7°F

The best month for swimming (with the highest average sea temperature) is August (60.4°F).
The coldest month (with the lowest average sea temperature) is March (37.8°F).

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Average daylight in April /
Average sunshine in April
Belfast, ME

Average daylight in April / Average sunshine in April - Belfast, ME
  • Average daylight in April: 13h and 30min

The month with the longest days is June (Average daylight: 15h and 29min).
The month with the shortest days is December (Average daylight: 8h and 55min).

  • Average sunshine in April: 7h and 6min

The month with the most sunshine is August (Average sunshine: 9h and 54min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).

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Average sunshine days in April
Belfast, ME

Average sunshine days in April - Belfast, ME
  • Average sunshine days in April: 11.7 days

The month with the most sunshine days is September (17.9 days).
The month with the least sunshine days is April (11.7 days).

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Average UV index in April
Belfast, ME

Average UV index in April - Belfast, 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
Belfast, ME

Average cloud cover in April - Belfast, ME
  • Average cloud cover in April: 54

The month with the most cloud cover is March (Cloud cover 55).
The months with the least cloud cover are August and September (Cloud cover 37).

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Average visibility in April
Belfast, ME

Average visibility in April - Belfast, ME
  • Average visibility in April: 6mi

The months with the highest visibility are January, February, March, April, October, November and December (6mi).
The months with the lowest visibility are May, June, July, August and September (5mi).

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