August weather forecastWest Mystic, CT
August
Weather in August
The last month of the summer, August, is also a moderately hot month in West Mystic, Connecticut, with an average temperature fluctuating between 66.4°F (19.1°C) and 77.7°F (25.4°C).Temperature
The start of August sees the average high-temperature at a still warm 77.7°F (25.4°C), showing little difference from July's 78.4°F (25.8°C). Throughout August, the temperature tends to fall to a consistent average low of 66.4°F (19.1°C).Humidity
In West Mystic, Connecticut, the average relative humidity in August is 78%.Rainfall
In West Mystic, in August, during 15.7 rainfall days, 2.6" (66mm) of precipitation is typically accumulated. In West Mystic, during the entire year, the rain falls for 164.2 days and collects up to 34.09" (866mm) of precipitation.Snowfall
June through October are months without snowfall.Daylight
The average length of the day in August is 13h and 47min.On the first day of the month, sunrise is at 5:43 am and sunset at 8:04 pm. On the last day of August, in West Mystic, sunrise is at 6:14 am and sunset at 7:22 pm EDT.
Sunshine
July and August, with an average of 10.5h of sunshine, are months with the most sunshine.UV index
June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: In August, a regular UV index of 6 translates into these guidelines:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
West Mystic, CT
- Average high temperature in August: 77.7°F
The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (36.1°F).
- Average low temperature in August: 66.4°F
The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (26.6°F).
Average pressure in August
West Mystic, CT
- Average pressure in August: 29.98"Hg
The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in August
West Mystic, CT
- Average wind speed in August: 8.1mph
The windiest month (with the highest average wind speed) is January (12.4mph).
The calmest months (with the lowest average wind speed) are July and August (8.1mph).
Average humidity in August
West Mystic, CT
- Average humidity in August: 78%
The months with the highest relative humidity are June and July (80%).
The months with the lowest relative humidity are January, March, April and November (74%).
Average rainfall in August
West Mystic, CT
- Average rainfall in August: 2.6"
The wettest month (with the highest rainfall) is December (3.86").
The driest month (with the least rainfall) is September (1.73").
Average rainfall days in August
West Mystic, CT
- Average rainfall days in August: 15.7 days
The month with the highest number of rainy days is July (16.8 days).
The month with the least rainy days is February (9.6 days).
Average snowfall in August
West Mystic, CT
- Average snowfall in August: 0"
The month with the highest snowfall is March (2.36").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in August
West Mystic, CT
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (6.6 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in August /
Average sunshine in August
West Mystic, CT
- Average daylight in August: 13h and 48min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in August: 10h and 30min
The months with the most sunshine are July and August (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).
Average sunshine days in August
West Mystic, CT
- Average sunshine days in August: 13.2 days
The month with the most sunshine days is November (16.9 days).
The month with the least sunshine days is June (11.9 days).
Average UV index in August
West Mystic, CT
- Average UV index in August: 6
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in August
West Mystic, CT
- Average cloud cover in August: 29
The month with the most cloud cover is December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in August
West Mystic, CT
- 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).





