April weather forecast
Isle au Haut, ME

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Weather in April

April in Isle au Haut, Maine, is a chilly spring month, with an average temperature ranging between max 44.1°F (6.7°C) and min 38.8°F (3.8°C).

Temperature

Isle au Haut's April weather indicates a minor ascent in high-temperatures, adjusting from an icy 37.9°F (3.3°C) in March to a chilly 44.1°F (6.7°C). Isle au Haut records a slight downturn in temperature to an average of 38.8°F (3.8°C) during April nights.

Humidity

The average relative humidity in April is 80%.

Rainfall

In Isle au Haut, in April, it is raining for 10.8 days, with typically 0.94" (24mm) of accumulated precipitation. Throughout the year, there are 109.9 rainfall days, and 9.72" (247mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through April, November and December. April is the last month it regularly snows. During 1.5 snowfall days, in April, Isle au Haut aggregates 0.2" (5mm) of snow. In Isle au Haut, during the entire year, snow falls for 30.9 days and aggregates up to 2.91" (74mm) of snow.

Daylight

In Isle au Haut, the average length of the day in April is 13h and 29min.
On the first day of the month, sunrise is at 6:14 am and sunset at 7:02 pm. On the last day of April, sunrise is at 5:26 am and sunset at 7:37 pm EDT.

Sunshine

The average sunshine in April is 7.9h.

UV index

In April, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for average individuals.
Note: A daily high UV index of 3 in April leads to these guidelines:
Prioritize safety - Suggestions to prevent sun damage are offered. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Always opt for UVA and UVB-resistant sunglasses on radiant days. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Updated: Aug 20, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is April cold?

The high-temperature, in April, in Isle au Haut, is 44.1°F (6.7°C), while the low-temperature averages to 38.8°F (3.8°C).

What is the average humidity in April?

The average relative humidity in April is 80%.

How many days does it rain in April in Isle au Haut?

In April, the rain falls for 10.8 days. Throughout April, 0.94" (24mm) of precipitation is accumulated.

What is the last month it snows?

April is the last month it regularly snows. During 1.5 snowfall days, in April, Isle au Haut aggregates 0.2" (5mm) of snow.

What is the average length of the day in April?

In April, the average day length is 13h and 29min.

When are sunrise and sunset in April?

On the first day of April, sunrise is at 6:14 am and sunset at 7:02 pm. On the last day of the month, sunrise is at 5:26 am and sunset at 7:37 pm EDT.

How many hours of sunshine does Isle au Haut have in April?

In Isle au Haut, the average sunshine duration in April is 7.9h.

What is the UV index reading in April?

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

Average temperature in April
Isle au Haut, ME

Average temperature in April - Isle au Haut, ME
  • Average high temperature in April: 44.1°F

The warmest month (with the highest average high temperature) is August (65.7°F).
The month with the lowest average high temperature is January (34.7°F).

  • Average low temperature in April: 38.8°F

The month with the highest average low temperature is August (61.7°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).

Average pressure in April
Isle au Haut, ME

Average pressure in April - Isle au Haut, 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).

Average wind speed in April
Isle au Haut, ME

Average wind speed in April - Isle au Haut, ME
  • Average wind speed in April: 15.2mph

The windiest month (with the highest average wind speed) is January (19.4mph).
The calmest months (with the lowest average wind speed) are July and August (10.3mph).

Average humidity in April
Isle au Haut, ME

Average humidity in April - Isle au Haut, ME
  • Average humidity in April: 80%

The months with the highest relative humidity are June, July and August (86%).
The month with the lowest relative humidity is November (74%).

Average rainfall in April
Isle au Haut, ME

Average rainfall in April - Isle au Haut, ME
  • Average rainfall in April: 0.94"

The wettest months (with the highest rainfall) are October and November (1.02").
The driest months (with the least rainfall) are August and September (0.55").

Average rainfall days in April
Isle au Haut, ME

Average rainfall days in April - Isle au Haut, ME
  • Average rainfall days in April: 10.8 days

The month with the highest number of rainy days is July (11.6 days).
The month with the least rainy days is January (6.2 days).

Average snowfall in April
Isle au Haut, ME

Average snowfall in April - Isle au Haut, ME
  • Average snowfall in April: 0.2"

The month with the highest snowfall is January (0.79").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in April
Isle au Haut, ME

Average snowfall days in April - Isle au Haut, ME
  • Average snowfall days in April: 1.5 days

The month with the highest number of snowfall days is January (9.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in April /
Average sunshine in April
Isle au Haut, ME

Average daylight in April / Average sunshine in April - Isle au Haut, ME
  • Average daylight in April: 13h and 3min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in April: 7h and 5min

The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 4h and 18min).

Average sunshine days in April
Isle au Haut, ME

Average sunshine days in April - Isle au Haut, ME
  • Average sunshine days in April: 16.8 days

The month with the most sunshine days is August (21.2 days).
The month with the least sunshine days is February (13.5 days).

Average UV index in April
Isle au Haut, ME

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

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

Average cloud cover in April
Isle au Haut, ME

Average cloud cover in April - Isle au Haut, ME
  • Average cloud cover in April: 49

The months with the most cloud cover are February and December (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 29).

Average visibility in April
Isle au Haut, ME

Average visibility in April - Isle au Haut, 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).

Isle au Haut, Maine, USA

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