August weather forecast
Deer Isle, ME

Weather in August

The last month of the summer, August, is another pleasant month in Deer Isle, Maine, with an average temperature varying between 59.9°F (15.5°C) and 68.9°F (20.5°C).

Temperature

The warmest month is August, with an average high-temperature of 68.9°F (20.5°C) and an average low-temperature of 59.9°F (15.5°C).

Humidity

In Deer Isle, the average relative humidity in August is 84%.

Rainfall

In Deer Isle, during August, the rain falls for 10.2 days and regularly aggregates up to 1.26" (32mm) of precipitation. In Deer Isle, during the entire year, the rain falls for 115.5 days and collects up to 17.95" (456mm) of precipitation.

Snowfall

May through September are months without snowfall.

Ocean temperature

With an average ocean temperature of 58.6°F (14.8°C), August is the month with the warmest seawater in Deer Isle, Maine.
Note: At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

Daylight

In August, the average length of the day is 13h and 58min.
On the first day of the month, sunrise is at 5:22 am and sunset at 7:59 pm. On the last day of August, sunrise is at 5:56 am and sunset at 7:13 pm EDT.

Sunshine

August has the most sunshine of the year, with an average of 10.4h of sunshine.

UV index

June through August, with an average maximum UV index of 5, are months with the highest UV index in Deer Isle. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: The average daily UV index of 5 in August transform into the following instructions:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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 is the warmest month in Deer Isle?

The warmest month is August, with an average high-temperature of 68.9°F (20.5°C) and an average low-temperature of 59.9°F (15.5°C).

What is the temperature in August in Deer Isle?

The average high-temperature, in August, in Deer Isle, Maine, is 68.9°F (20.5°C), while the average low-temperature is 59.9°F (15.5°C).

What is the average humidity in August in Deer Isle?

In Deer Isle, Maine, the average relative humidity in August is 84%.

How much does it rain in Deer Isle in August?

In Deer Isle, during August, the rain falls for 10.2 days and regularly aggregates up to 1.26" (32mm) of precipitation.

When it does not snow in Deer Isle?

May through September are months without snowfall in Deer Isle.

What month is the ocean warmest in Deer Isle?

The month with the warmest seawater in Deer Isle is August, with an average ocean temperature of 58.6°F (14.8°C).

How cold is the water in August in Deer Isle?

In Deer Isle, in August, the average water temperature is 58.6°F (14.8°C). At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

What is the average length of the day in August in Deer Isle?

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

When are sunrise and sunset in August in Deer Isle?

On the first day of August in Deer Isle, Maine, sunrise is at 5:22 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 5:56 am and sunset at 7:13 pm EDT.

What month has the most sunshine in Deer Isle?

The month with the most sunshine in Deer Isle, Maine, is August, with an average of 10.4h of sunshine.

How long on average sun shines in August in Deer Isle?

In August, the average sunshine duration is 10.4h.

What is the month with the highest UV index in Deer Isle?

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

What is the UV index intensity in August in Deer Isle?

The average daily maximum UV index in August in Deer Isle is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Deer Isle, ME

Average temperature in August - Deer Isle, ME
  • Average high temperature in August: 68.9°F

The warmest month (with the highest average high temperature) is August (68.9°F).
The month with the lowest average high temperature is January (31.5°F).

  • Average low temperature in August: 59.9°F

The month with the highest average low temperature is August (59.9°F).
The coldest month (with the lowest average low temperature) is January (21°F).

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Average pressure in August
Deer Isle, ME

Average pressure in August - Deer Isle, 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
Deer Isle, ME

Average wind speed in August - Deer Isle, ME
  • Average wind speed in August: 7.8mph

The windiest month (with the highest average wind speed) is January (14.4mph).
The calmest months (with the lowest average wind speed) are July and August (7.8mph).

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Average humidity in August
Deer Isle, ME

Average humidity in August - Deer Isle, ME
  • Average humidity in August: 84%

The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is November (76%).

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Average rainfall in August
Deer Isle, ME

Average rainfall in August - Deer Isle, ME
  • Average rainfall in August: 1.26"

The wettest month (with the highest rainfall) is October (2.09").
The driest month (with the least rainfall) is September (0.91").

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Average rainfall days in August
Deer Isle, ME

Average rainfall days in August - Deer Isle, ME
  • Average rainfall days in August: 10.2 days

The month with the highest number of rainy days is July (12.8 days).
The month with the least rainy days is February (5.3 days).

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Average snowfall in August
Deer Isle, ME

Average snowfall in August - Deer Isle, ME
  • Average snowfall in August: 0"

The month with the highest snowfall is February (2.32").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in August
Deer Isle, ME

Average snowfall days in August - Deer Isle, ME
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (7.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average sea temperature in August
Deer Isle, ME

Average sea temperature in August - Deer Isle, ME
  • Average sea temperature in August: 58.6°F

The best month for swimming (with the highest average sea temperature) is August (58.6°F).
The coldest month (with the lowest average sea temperature) is March (38.2°F).

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Average daylight in August /
Average sunshine in August
Deer Isle, ME

Average daylight in August / Average sunshine in August - Deer Isle, ME
  • Average daylight in August: 13h and 58min

The month with the longest days is June (Average daylight: 15h and 28min).
The month with the shortest days is December (Average daylight: 8h and 56min).

  • Average sunshine in August: 10h and 24min

The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 4h and 30min).

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Average sunshine days in August
Deer Isle, ME

Average sunshine days in August - Deer Isle, ME
  • Average sunshine days in August: 19.3 days

The month with the most sunshine days is September (19.9 days).
The month with the least sunshine days is July (15.4 days).

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Average UV index in August
Deer Isle, ME

Average UV index in August - Deer Isle, 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
Deer Isle, ME

Average cloud cover in August - Deer Isle, ME
  • Average cloud cover in August: 31

The months with the most cloud cover are February and March (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 31).

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Average visibility in August
Deer Isle, ME

Average visibility in August - Deer Isle, ME
  • Average visibility in August: 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).

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