August weather forecast
Belfast, ME

Weather in August

The last month of the summer, August, is also a moderately hot month in Belfast, Maine, with temperature in the range of an average low of 56.8°F (13.8°C) and an average high of 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 Belfast, the average relative humidity in August is 82%.

Rainfall

In Belfast, it is raining for 13 days, with typically 1.85" (47mm) of accumulated precipitation. In Belfast, during the entire year, the rain falls for 141.1 days and collects up to 24.29" (617mm) of precipitation.

Snowfall

June through September are months without snowfall.

Ocean temperature

With an average ocean temperature of 60.4°F (15.8°C), August is the month with the warmest seawater in Belfast.
Note: For swimming, a surface water temperature of 60.4°F (15.8°C) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 69.8°F (21°C).

Daylight

The average length of the day in August is 13h and 59min.
On the first day of August in Belfast, sunrise is at 5:23 am and sunset at 8:01 pm. On the last day of the month, sunrise is at 5:57 am and sunset at 7:14 pm EDT.

Sunshine

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

UV index

The months with the highest UV index in Belfast, Maine, are June through August, with an average maximum UV index of 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the average person.
Note: In August, the average maximum UV index of 5 translate into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. 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 is the warmest month in Belfast?

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

What is the average humidity in August in Belfast?

The average relative humidity in August in Belfast is 82%.

How many days does it rain in August in Belfast?

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

When it does not snow in Belfast?

In Belfast, Maine, snow does not fall in June through September.

What month is the ocean warmest in Belfast?

With an average ocean temperature of 60.4°F (15.8°C), August is the month with the warmest seawater in Belfast, Maine.

What is the ocean temperature in August in Belfast?

In August, the average ocean temperature is 60.4°F (15.8°C). For swimming, a surface water temperature of 60.4°F (15.8°C) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 69.8°F (21°C).

How many hours of daylight does Belfast have in August?

The average day length in August in Belfast is 13h and 59min.

What time are sunrise and sunset in August in Belfast?

In August, on the first day of the month, sunrise is at 5:23 am and sunset at 8:01 pm. On the last day of the month, in Belfast, Maine, sunrise is at 5:57 am and sunset at 7:14 pm EDT.

What month has the most sunshine in Belfast?

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

How many hours of sunshine does Belfast have in August?

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

When is the highest UV index in Belfast?

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

What is the UV index reading in August in Belfast?

The average daily maximum UV index in August in Belfast, Maine, is 5. A UV Index value of 3 to 5 symbolizes a moderate health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Belfast, ME

Average temperature in August - Belfast, 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
Belfast, ME

Average pressure in August - Belfast, 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
Belfast, ME

Average wind speed in August - Belfast, 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
Belfast, ME

Average humidity in August - Belfast, 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
Belfast, ME

Average rainfall in August - Belfast, 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
Belfast, ME

Average rainfall days in August - Belfast, 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
Belfast, ME

Average snowfall in August - Belfast, 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
Belfast, ME

Average snowfall days in August - Belfast, 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 sea temperature in August
Belfast, ME

Average sea temperature in August - Belfast, ME
  • Average sea temperature in August: 60.4°F

The best month for swimming (with the highest average sea temperature) is August (60.4°F).
The coldest month (with the lowest average sea temperature) is March (37.8°F).

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Average daylight in August /
Average sunshine in August
Belfast, ME

Average daylight in August / Average sunshine in August - Belfast, ME
  • Average daylight in August: 13h and 59min

The month with the longest days is June (Average daylight: 15h and 29min).
The month with the shortest days is December (Average daylight: 8h and 55min).

  • Average sunshine in August: 9h and 54min

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
Belfast, ME

Average sunshine days in August - Belfast, 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
Belfast, ME

Average UV index in August - Belfast, 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
Belfast, ME

Average cloud cover in August - Belfast, 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
Belfast, ME

Average visibility in August - Belfast, 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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