August weather forecastWestport, CT

August
Weather in August
August continues the summer trend with temperatures slightly cooler than the previous month. The rainfall increases to 3.54" (90mm) spread over 16.8 days of the month. The higher levels of relative humidity could further amplify the perception of heat. Despite this heat, Westport residents make the most of these concluding summer days. The city thrives with music festivals, art exhibitions, and farmers markets, epitomizing the lively local culture.Temperature
With the transition into August, Westport notes an average high-temperature of a still warm 80.1°F (26.7°C), closely resembling July. Westport encounters an average low-temperature of 67.8°F (19.9°C) during August nights.Humidity
The average relative humidity in August is 73%.Rainfall
In Westport, in August, it is raining for 16.8 days, with typically 3.54" (90mm) of accumulated precipitation. In Westport, during the entire year, the rain falls for 166.3 days and collects up to 37.87" (962mm) of precipitation.Snowfall
In Westport, snow does not fall in May through October.Daylight
In Westport, the average length of the day in August is 13h and 46min.On the first day of the month, sunrise is at 5:49 am and sunset at 8:09 pm. On the last day of August, sunrise is at 6:19 am and sunset at 7:27 pm EDT.
Sunshine
In August, the average sunshine in Westport is 10.4h.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 threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: In August, a regular UV index of 6 translates into these guidelines:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Westport, CT
- Average high temperature in August: 80.1°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (35.8°F).
- Average low temperature in August: 67.8°F
The month with the highest average low temperature is July (68.2°F).
The coldest month (with the lowest average low temperature) is January (26.4°F).
Average pressure in August
Westport, CT
- Average pressure in August: 29.98"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in August
Westport, CT
- Average wind speed in August: 6.6mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).
Average humidity in August
Westport, CT
- Average humidity in August: 73%
The months with the highest relative humidity are February, May and June (76%).
The months with the lowest relative humidity are April and November (72%).
Average rainfall in August
Westport, CT
- Average rainfall in August: 3.54"
The wettest month (with the highest rainfall) is July (4.13").
The driest months (with the least rainfall) are January and February (2.36").
Average rainfall days in August
Westport, CT
- Average rainfall days in August: 16.8 days
The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is January (8.3 days).
Average snowfall in August
Westport, CT
- Average snowfall in August: 0"
The month with the highest snowfall is February (2.83").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in August
Westport, CT
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (7.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Westport, 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 18min).
- Average sunshine in August: 10h and 24min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in August
Westport, CT
- Average sunshine days in August: 11.5 days
The month with the most sunshine days is January (17.8 days).
The month with the least sunshine days is June (10 days).
Average UV index in August
Westport, 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
Westport, CT
- Average cloud cover in August: 30
The months with the most cloud cover are February, March and December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in August
Westport, 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).





