August weather forecast
Islesboro, ME

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Weather in August

August, the last month of the summer in Islesboro, is another warm month, with an average temperature fluctuating between 56.8°F (13.8°C) and 73.9°F (23.3°C).

Temperature

Islesboro witnesses its highest temperatures in July and August, reaching an average of 73.9°F (23.3°C).

Humidity

In Islesboro, the average relative humidity in August is 82%.

Rainfall

In Islesboro, Maine, during August, the rain falls for 13 days and regularly aggregates up to 1.85" (47mm) of precipitation. Throughout the year, in Islesboro, there are 141.1 rainfall days, and 24.29" (617mm) of precipitation is accumulated.

Snowfall

In Islesboro, snow does not fall in June through September.

Daylight

The average length of the day in August in Islesboro is 13h and 58min.
On the first day of the month, sunrise is at 5:23 am and sunset at 8:00 pm. On the last day of August, in Islesboro, Maine, sunrise is at 5:58 am and sunset at 7:13 pm EDT.

Sunshine

The month with the most sunshine in Islesboro is August, with an average of 9.9h of sunshine.

UV index

June through August, with an average maximum UV index of 5, are months with the highest UV index in Islesboro. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: The UV index of 5 during August leads to these advisories:
Ensure safety - Sun damage prevention is strongly urged. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
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Frequently asked questions

What part of the year is the hottest in Islesboro?

In Islesboro, Maine, the months of July and August are known for the peak temperatures, reaching an average high of 73.9°F (23.3°C).

What are August temperatures in Islesboro?

The average high-temperature, in August, in Islesboro, is 73.9°F (23.3°C), while the average low-temperature is 56.8°F (13.8°C).

What is the average humidity in August in Islesboro?

The average relative humidity in August is 82%.

How many days does it rain in August in Islesboro?

In August, in Islesboro, the rain falls for 13 days. Throughout August, 1.85" (47mm) of precipitation is accumulated.

When it does not snow in Islesboro?

June through September are months without snowfall.

How many hours of daylight does Islesboro have in August?

The average day length in August in Islesboro, Maine, is 13h and 58min.

When are sunrise and sunset in August in Islesboro?

On the first day of August in Islesboro, Maine, sunrise is at 5:23 am and sunset at 8:00 pm. On the last day of the month, sunrise is at 5:58 am and sunset at 7:13 pm EDT.

What month has the most sunshine in Islesboro?

With an average of 9.9h of sunshine, August has the most sunshine of the year in Islesboro.

How long on average sun shines in August in Islesboro?

In Islesboro, Maine, the average sunshine duration in August is 9.9h.

What are the months with the highest UV index in Islesboro?

June through August, with an average maximum UV index of 5, are months with the highest UV index.

What is the UV index intensity in August in Islesboro?

In Islesboro, the average daily maximum UV index in August is 5. A UV Index of 3 to 5 symbolizes a medium health risk from exposure to Sun's UV rays.
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 August
Islesboro, ME

Average temperature in August - Islesboro, ME
  • Average high temperature in August: 73.9°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 August: 56.8°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 August
Islesboro, ME

Average pressure in August - Islesboro, ME
  • Average pressure in August: 29.96"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 August
Islesboro, ME

Average wind speed in August - Islesboro, ME
  • Average wind speed in August: 6mph

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 August
Islesboro, ME

Average humidity in August - Islesboro, ME
  • Average humidity in August: 82%

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 August
Islesboro, ME

Average rainfall in August - Islesboro, ME
  • Average rainfall in August: 1.85"

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 August
Islesboro, ME

Average rainfall days in August - Islesboro, ME
  • Average rainfall days in August: 13 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 August
Islesboro, ME

Average snowfall in August - Islesboro, ME
  • Average snowfall in August: 0"

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 August
Islesboro, ME

Average snowfall days in August - Islesboro, ME
  • Average snowfall days in August: 0 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 daylight in August /
Average sunshine in August
Islesboro, ME

Average daylight in August / Average sunshine in August - Islesboro, ME
  • Average daylight in August: 14h and 0min

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 August: 9h and 5min

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 August
Islesboro, ME

Average sunshine days in August - Islesboro, ME
  • Average sunshine days in August: 15.8 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 August
Islesboro, ME

Average UV index in August - Islesboro, ME
  • Average UV index in August: 5

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 August
Islesboro, ME

Average cloud cover in August - Islesboro, ME
  • Average cloud cover in August: 37

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 August
Islesboro, ME

Average visibility in August - Islesboro, ME
  • Average visibility in August: 5mi

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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Islesboro, Maine, USA

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