August weather forecastCharleston, ME
August
Weather in August
August, the last month of the summer in Charleston, is another warm month, with an average temperature varying between 54.7°F (12.6°C) and 75.9°F (24.4°C).Temperature
The onset of August marks an average high-temperature of a still warm 75.9°F (24.4°C), hardly differing from July's 77.2°F (25.1°C). An average low-temperature of 54.7°F (12.6°C) is recorded during the nights in August.Humidity
In August, the average relative humidity is 79%.Rainfall
In Charleston, during August, the rain falls for 15.8 days and regularly aggregates up to 2.6" (66mm) of precipitation. In Charleston, during the entire year, the rain falls for 154.3 days and collects up to 32.68" (830mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Charleston, the average length of the day in August is 14h and 2min.On the first day of August, sunrise is at 5:22 am and sunset at 8:02 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 Charleston are June through August, with an average maximum UV index of 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for average individuals.Note: A maximum UV index of 5 in August translates into the following recommendations:
Make use of precautions - Shielding skin and eyes from injury is a requirement. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Stay sun-safe with clothing that is both closely woven and worn loosely.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Charleston, ME
- Average high temperature in August: 75.9°F
The warmest month (with the highest average high temperature) is July (77.2°F).
The month with the lowest average high temperature is January (23.9°F).
- Average low temperature in August: 54.7°F
The month with the highest average low temperature is July (55.9°F).
The coldest month (with the lowest average low temperature) is January (10.8°F).
Average pressure in August
Charleston, ME
- Average pressure in August: 29.95"Hg
The month with the highest atmospheric pressure is September (30.04"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in August
Charleston, ME
- Average wind speed in August: 5.2mph
The windiest month (with the highest average wind speed) is March (7.5mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in August
Charleston, ME
- Average humidity in August: 79%
The month with the highest relative humidity is February (88%).
The month with the lowest relative humidity is May (76%).
Average rainfall in August
Charleston, ME
- Average rainfall in August: 2.6"
The wettest month (with the highest rainfall) is April (3.54").
The driest month (with the least rainfall) is July (1.89").
Average rainfall days in August
Charleston, ME
- Average rainfall days in August: 15.8 days
The months with the highest number of rainy days are May and July (16.7 days).
The month with the least rainy days is February (6.8 days).
Average snowfall in August
Charleston, ME
- Average snowfall in August: 0"
The month with the highest snowfall is February (11.26").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Charleston, ME
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (15.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Charleston, ME
- Average daylight in August: 14h and 0min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- 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: 3h and 48min).
Average sunshine days in August
Charleston, ME
- Average sunshine days in August: 13.1 days
The month with the most sunshine days is September (16.4 days).
The month with the least sunshine days is April (10.7 days).
Average UV index in August
Charleston, 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, October, November and December (UV index 2).
Average cloud cover in August
Charleston, ME
- Average cloud cover in August: 40
The month with the most cloud cover is February (Cloud cover 59).
The months with the least cloud cover are August and September (Cloud cover 40).
Average visibility in August
Charleston, ME
- Average visibility in August: 5mi
The months with the highest visibility are April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January, February and March (4mi).
