August weather forecastBar Harbor, ME
August
Weather in August
August continues the trend of balmy days, similar to July. The weather stays relatively hot, with temperatures reaching peaks similar to July's. It is the last full month of summer, allowing ample opportunity for tourists to enjoy the warm weather and sea pursuits. As the sun sets on August, the season starts showing signs of transition towards autumn. Preparations for fall activities begin nearing the end of this month.Temperature
August brings the highest temperatures, with an average high of 73.4°F (23°C) and an average low of 57.7°F (14.3°C).Humidity
In Bar Harbor, the average relative humidity in August is 80%.Rainfall
In Bar Harbor, in August, during 10.4 rainfall days, 1.73" (44mm) of precipitation is typically accumulated. In Bar Harbor, during the entire year, the rain falls for 142.1 days and collects up to 32.28" (820mm) of precipitation.Snowfall
In Bar Harbor, snow does not fall in June through September.Ocean temperature
With an average ocean temperature of 56.8°F (13.8°C), August is the month with the warmest seawater.Note: You can swim in 56.8°F (13.8°C) below 50°F (10°C) with proper thermal wear; failing that, the cold shock and respiratory challenges are nearly certain. A short span at 55.4°F (13°C) without it is tough.
Daylight
The average length of the day in August is 13h and 59min.On the first day of August, sunrise is at 5:20 am and sunset at 7:57 pm. On the last day of the month, sunrise is at 5:55 am and sunset at 7:10 pm EDT.
Sunshine
With an average of 10.1h of sunshine, August has the most sunshine of the year.UV index
The months with the highest UV index are June through August, with an average maximum UV index of 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: In August, a daily maximum UV index of 5 leads to the following instructions:
Exercise prevention - Precautions against solar damage are endorsed. To avoid the Sun's strongest rays, limit exposure around the mid-day period. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Bar Harbor, ME
- Average high temperature in August: 73.4°F
The warmest month (with the highest average high temperature) is August (73.4°F).
The month with the lowest average high temperature is January (29.7°F).
- Average low temperature in August: 57.7°F
The month with the highest average low temperature is July (58.1°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).
Average pressure in August
Bar Harbor, 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).
Average wind speed in August
Bar Harbor, ME
- Average wind speed in August: 6.3mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).
Average humidity in August
Bar Harbor, ME
- Average humidity in August: 80%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is November (76%).
Average rainfall in August
Bar Harbor, ME
- Average rainfall in August: 1.73"
The wettest month (with the highest rainfall) is December (3.94").
The driest month (with the least rainfall) is July (1.57").
Average rainfall days in August
Bar Harbor, ME
- Average rainfall days in August: 10.4 days
The month with the highest number of rainy days is April (15.5 days).
The month with the least rainy days is February (7.5 days).
Average snowfall in August
Bar Harbor, ME
- Average snowfall in August: 0"
The month with the highest snowfall is February (5.75").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Bar Harbor, ME
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in August
Bar Harbor, ME
- Average sea temperature in August: 56.8°F
The best month for swimming (with the highest average sea temperature) is August (56.8°F).
The coldest month (with the lowest average sea temperature) is March (38.6°F).
Average daylight in August /
Average sunshine in August
Bar Harbor, 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: 10h and 6min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 6min).
Average sunshine days in August
Bar Harbor, ME
- Average sunshine days in August: 18.7 days
The month with the most sunshine days is August (18.7 days).
The month with the least sunshine days is April (11.2 days).
Average UV index in August
Bar Harbor, 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).
Average cloud cover in August
Bar Harbor, ME
- Average cloud cover in August: 35
The month with the most cloud cover is February (Cloud cover 56).
The months with the least cloud cover are August and September (Cloud cover 35).
Average visibility in August
Bar Harbor, ME
- Average visibility in August: 5mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
