August weather forecast
Islesboro, ME

Weather in August

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

Temperature

July and August, with an average high-temperature of 73.9°F (23.3°C), are the warmest months.

Humidity

In August, the average relative humidity is 82%.

Rainfall

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

Snowfall

In Islesboro snow does not fall in June through September.

Daylight

In Islesboro, the average length of the day in August is 14h.

Sunshine

The month with the most sunshine in Islesboro, Maine, 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. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to the UV radiation for ordinary individuals.
Note: The daily maximum UV index of 5 interpret into the following advice:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What are the warmest months in Islesboro?

July and August, with an average high-temperature of 73.9°F (23.3°C), are warmest months in Islesboro, Maine.

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 Islesboro, in August, it is raining for 13 days, with typically 1.85" (47mm) of accumulated precipitation.

When it does not snow in Islesboro?

June through September are months without snowfall in Islesboro.

How many hours of daylight does Islesboro have in August?

The average length of the day in August in Islesboro is 14h.

What month has the most sunshine in Islesboro?

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

How long on average sun shines in August in Islesboro?

The average sunshine in August in Islesboro, Maine, is 9.9h.

What is the month 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 in Islesboro.

What is the UV index reading in August in Islesboro?

In August, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability from unsafe exposure to the Sun's UV rays.

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"

The month with the highest atmospheric pressure is September (30.04").
The month with the lowest atmospheric pressure is June (29.91").

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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%

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").
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).
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

The month with the longest days is June (Average daylight: 15.5h).
The month with the shortest days is December (Average daylight: 8.9h).

  • Average sunshine in August: 9.9h

The month with the most sunshine is August (Average sunshine: 9.9h).
The month with the least sunshine is February (Average sunshine: 4.3h).

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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

Months with the highest UV index are June, July and August (UV index 5).
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).
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

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

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