April weather forecast
Belfast, ME

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Weather in April

April symbolizes the onset of spring in Belfast, Maine. Lighter jackets replace bulky winter clothing as temperatures continue to rise, complementing the longer days with a healthy amount of sunlight. Notably, rainfall inches up to 2.64" in April, from 1.57" in March, signaling the shift from snowflakes to raindrops. The proliferation of life is evident in the longer days, warming temperatures, budding trees, and blooming flowers. Sunny weather encourages people to venture outdoors to observe and revel in the renewal of nature.

Temperature

April brings a temperature increase, with average high-temperatures moving from March's icy 37°F to a chilly 48.9°F. Belfast records an average nighttime low of 34.5°F in April.

Humidity

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

Rainfall

In Belfast, Maine, during April, the rain falls for 15 days and regularly aggregates up to 2.64" of precipitation. In Belfast, during the entire year, the rain falls for 141.1 days and collects up to 24.29" of precipitation.

Snowfall

January through May, October through December are months with snowfall. In Belfast, Maine, in April, snow falls for 2.9 days, with typically accumulated 2.17" of snow. In Belfast, during the entire year, snow falls for 44.3 days and aggregates up to 16.81" of snow.

Ocean temperature

In Belfast, the average seawater temperature in April is 40.6°F.
Note: In swimming undertakings, this is deemed life-threatening and highly risky. The cold water induces intense discomfort and leads to swift hyperventilation. A specialized swimsuit is indispensable to decrease thermal injuries.

Daylight

In April, the average length of the day in Belfast is 13h and 30min.
On the first day of the month, sunrise is at 6:16 am and sunset at 7:02 pm. On the last day of April, sunrise is at 5:27 am and sunset at 7:38 pm EDT.

Sunshine

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

UV index

The average daily maximum UV index in April in Belfast is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A maximum daily UV index of 3 during April morphs into the following directions:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. When the Sun is at its strongest around midday, find shade and limit exposure. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
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FAQ

What is the average April temperature in Belfast?

An average high-temperature, in April, in Belfast, is 48.9°F and the average low-temperature is 34.5°F.

What is the average humidity in April in Belfast?

In April, the average relative humidity is 78%.

How much does it rain in Belfast in April?

In Belfast, during April, the rain falls for 15 days and regularly aggregates up to 2.64" of precipitation.

How much does it snow in Belfast in April?

In Belfast, in April, during 2.9 snowfall days, 2.17" of snow is typically accumulated.

How cold is the water in April in Belfast?

In Belfast, the average seawater temperature in April is 40.6°F. 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 Belfast?

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

When is the sunrise / sunset in April in Belfast?

On the first day of April in Belfast, Maine, sunrise is at 6:16 am and sunset at 7:02 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 April, the average sunshine duration in Belfast is 7.1h.

How high is the UV index in April in Belfast?

The average daily maximum UV index in April is 3. A UV Index reading of 3 to 5 represents a moderate vulnerability from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average sea temperature
Average daylight
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 3min

The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in April: 7h and 1min

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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Belfast, Maine, USA

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