August weather forecastSullivan, ME
August
Weather in August
The last month of the summer, August, is a warm month in Sullivan, Maine, with an average temperature fluctuating between 57.7°F (14.3°C) and 73.4°F (23°C).Temperature
The month of August sees the highest average temperatures, reaching 73.4°F (23°C) at the peak and 57.7°F (14.3°C) at the low.Humidity
In August, the average relative humidity is 80%.Rainfall
In Sullivan, in August, during 10.4 rainfall days, 1.73" (44mm) of precipitation is typically accumulated. Throughout the year, there are 142.1 rainfall days, and 32.28" (820mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Ocean temperature
The month with the warmest seawater in Sullivan is August, with an average ocean temperature of 56.8°F (13.8°C).Note: Danger awaits those who swim in 56.8°F (13.8°C) without protection. Falling below 50°F (10°C) means intense cold shock and hyperventilation.
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 5:54 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
June through August, with an average maximum UV index of 5, are months with the highest UV index. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: The daily high UV index of 5 in August translates into this advice:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Sullivan, 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
Sullivan, 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
Sullivan, 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
Sullivan, 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
Sullivan, 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
Sullivan, 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
Sullivan, 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
Sullivan, 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
Sullivan, 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°F).
Average daylight in August /
Average sunshine in August
Sullivan, 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
Sullivan, 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
Sullivan, 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
Sullivan, 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
Sullivan, 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).
