Climate and monthly weather forecast
Isle au Haut, ME

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Weather in January

January, like December, in Isle au Haut, Maine, is another cold winter month, with temperature in the range of an average low of 26.1°F (-3.3°C) and an average high of 34.7°F (1.5°C). The month of January, characterized by an average high of 34.7°F (1.5°C) and a low of 26.1°F (-3.3°C), is recognized as the coldest. Weather in January »

Weather in February

February, the last month of the winter in Isle au Haut, is another cold month, with an average temperature ranging between max 35.1°F (1.7°C) and min 27°F (-2.8°C). The initiation of February sees an average high-temperature of a still icy 35.1°F (1.7°C), showing minor variations from the previous month. Weather in February »

Weather in March

March, the first month of the spring in Isle au Haut, is also a wintry month, with an average temperature fluctuating between 37.9°F (3.3°C) and 30.7°F (-0.7°C). The onset of March manifests an average high-temperature of a still icy 37.9°F (3.3°C), demonstrating a minor variation from the preceding month. Weather in March »

Weather in April

April is a frosty spring month in Isle au Haut, Maine, with an average temperature fluctuating between 44.1°F (6.7°C) and 38.8°F (3.8°C). Isle au Haut, Maine, observes a slight ascent in average high-temperatures during April, adjusting from a wintry 37.9°F (3.3°C) in March to a frosty 44.1°F (6.7°C). Weather in April »

Weather in May

May, the last month of the spring in Isle au Haut, is a fresh month, with temperature in the range of an average low of 46.2°F (7.9°C) and an average high of 50.7°F (10.4°C). Isle au Haut's transition into May is noticed by a slight rise in the average high-temperature, advancing from a frosty 44.1°F (6.7°C) in April to a fresh 50.7°F (10.4°C). Weather in May »

Weather in June

June, the first month of the summer in Isle au Haut, is a mild month, with an average temperature varying between 53.6°F (12°C) and 57.9°F (14.4°C). As June arrives, a slight rise in the average high-temperature is observed, moving from a cool 50.7°F (10.4°C) in May to a refreshing 57.9°F (14.4°C). Weather in June »

Weather in July

July is a refreshing summer month in Isle au Haut, Maine, with an average temperature fluctuating between 64.4°F (18°C) and 60.4°F (15.8°C). The shift into July is accompanied by a modest temperature increase, with the average high-temperature edging up from 57.9°F (14.4°C) in June to a still refreshing 64.4°F (18°C). Weather in July »

Weather in August

The last month of the summer, August, is another refreshing month in Isle au Haut, Maine, with an average temperature ranging between max 65.7°F (18.7°C) and min 61.7°F (16.5°C). Isle au Haut notes the warmest temperatures in August, with a high average of 65.7°F (18.7°C) and a low of 61.7°F (16.5°C). Weather in August »

Weather in September

The first month of the autumn, September, is also an enjoyable month in Isle au Haut, Maine, with an average temperature fluctuating between 61.7°F (16.5°C) and 57.4°F (14.1°C). The shift into September uncovers an average high-temperature of a still enjoyable 61.7°F (16.5°C), subtly different from the previous month. Weather in September »

Weather in October

October, like September, in Isle au Haut, Maine, is another fresh autumn month, with an average temperature fluctuating between 55°F (12.8°C) and 50.4°F (10.2°C). As October commences, the average high-temperature subtly reduces, transitioning from a comfortable 61.7°F (16.5°C) in September to a cool 55°F (12.8°C). Weather in October »

Weather in November

November, the last month of the autumn in Isle au Haut, is another chilly month, with an average temperature varying between 47.3°F (8.5°C) and 41°F (5°C). November witnesses a gentle descent in average high-temperature, descending from October's cool 55°F (12.8°C) to a frosty 47.3°F (8.5°C). Weather in November »

Weather in December

The first month of the winter, December, is still a cold month in Isle au Haut, Maine, with an average temperature varying between 32.4°F (0.2°C) and 39.7°F (4.3°C). The transition into December involves a small decrease in the average high-temperature, dipping slightly from a chilly 47.3°F (8.5°C) in November to an icy 39.7°F (4.3°C). Weather in December »
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Frequently asked questions

What is the coldest month in Isle au Haut?

Isle au Haut's January weather, with an average high temperature of 34.7°F (1.5°C) and an average low temperature of 26.1°F (-3.3°C), tends to be the coldest of the year.

How many days does it rain in Isle au Haut?

Throughout the year, in Isle au Haut, Maine, there are 109.9 rainfall days, and 9.72" (247mm) of precipitation is accumulated.

When does it snow in Isle au Haut?

Months with snowfall in Isle au Haut, Maine, are January through April, November and December.

When does it snow the most in Isle au Haut?

The month with the most snowfall is January, when snow falls for 9.1 days and typically aggregates up to 0.79" (20mm) of snow.

How many days does it snow in Isle au Haut?

In Isle au Haut, Maine, during the entire year, snow falls for 30.9 days and aggregates up to 2.91" (74mm) of snow.

What is the month with the lowest UV index in Isle au Haut?

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Isle au Haut, Maine.

When is Daylight Saving Time (DST) in Isle au Haut?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.

When it does not snow in Isle au Haut?

In Isle au Haut, snow does not fall in May through October.

What are the most humid months in Isle au Haut?

The months with the highest humidity in Isle au Haut, Maine, are June through August, with an average relative humidity of 86%.

When are the longest days in Isle au Haut?

With an average of 15h and 24min of daylight, June has the longest days of the year in Isle au Haut, Maine.

What are the months with the highest UV index in Isle au Haut?

July and August, with an average maximum UV index of 5, are months with the highest UV index in Isle au Haut.

What month is the hottest in Isle au Haut?

August, known for its average high temperature of 65.7°F (18.7°C) and an average low temperature of 61.7°F (16.5°C), is the warmest month in Isle au Haut.

What is the driest month in Isle au Haut?

The months with the least rainfall are August and September Rain falls for 8.4 days and accumulates 0.55" (14mm) of rain.

What month has the most sunshine in Isle au Haut?

The month with the most sunshine is August, with an average of 10.7h of sunshine.

What is the wettest month in Isle au Haut?

The months with the most rainfall in Isle au Haut, Maine, are October and November, with an average 1.02" (26mm) of precipitation.

What is the least humid month in Isle au Haut?

The least humid month is November, with an average relative humidity of 74%.

What is the month with the shortest days in Isle au Haut?

December has the shortest days of the year in Isle au Haut, Maine, with an average of 8h and 54min of daylight.

What is the month with the least sunshine in Isle au Haut?

The month with the least sunshine is December, with an average of 4.3h of sunshine.

Average temperature
Isle au Haut, ME

Average temperature - Isle au Haut, ME

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).

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).

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Average pressure
Isle au Haut, ME

Average pressure - Isle au Haut, ME

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
Isle au Haut, ME

Average wind speed - Isle au Haut, ME

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).

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Average humidity
Isle au Haut, ME

Average humidity - Isle au Haut, ME

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

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Average rainfall
Isle au Haut, ME

Average rainfall - Isle au Haut, ME

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").

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Average rainfall days
Isle au Haut, ME

Average rainfall days - Isle au Haut, ME

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).

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Average snowfall
Isle au Haut, ME

Average snowfall - Isle au Haut, ME

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").

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Average snowfall days
Isle au Haut, ME

Average snowfall days - Isle au Haut, ME

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).

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Average daylight / Average sunshine
Isle au Haut, ME

Average daylight / Average sunshine - Isle au Haut, ME

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).

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).

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Average sunshine days
Isle au Haut, ME

Average sunshine days - Isle au Haut, ME

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

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Average UV index
Isle au Haut, ME

Average UV index - Isle au Haut, ME

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).

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Average visibility
Isle au Haut, ME

Average visibility - Isle au Haut, ME

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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Isle au Haut, Maine, USA

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