Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall in August
- Average snowfall days in August
- Average sea temperature in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
Transitioning into August, Old Greenwich experiences an average high-temperature of a still warm 80.4°F (26.9°C), marking a minor shift from the preceding month. During August, Old Greenwich witnesses a consistent average low-temperature of 68.9°F (20.5°C).Humidity
The least humid month is August, with an average relative humidity of 71%.Rainfall
In August, the rain falls for 16.3 days. Throughout August, 3.46" (88mm) of precipitation is accumulated. In Old Greenwich, Connecticut, during the entire year, the rain falls for 166.6 days and collects up to 38.07" (967mm) of precipitation.Snowfall
May through October are months without snowfall.Ocean temperature
August is the month with the warmest seawater in Old Greenwich, Connecticut, with an average ocean temperature of 73°F (22.8°C).Note: Factor in your tolerance to cold, the sunshine, the wind, and the air's warmth, and a swim in 73°F (22.8°C) might be tempting. It is interesting to note that Olympians compete in 77°F (25°C) to 82.4°F (28°C) water temperatures.
Daylight
In August, the average length of the day is 13h and 46min.On the first day of the month, sunrise is at 5:50 am and sunset at 8:10 pm. On the last day of August, sunrise is at 6:20 am and sunset at 7:28 pm EDT.
Sunshine
The average sunshine in August in Old Greenwich is 10.2h.UV index
The months with the highest UV index in Old Greenwich are June through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index of 6 during August translates into the following directions:
Inhibit overexposure. Warding off sun damage is of utmost importance. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Stay cautious! Sand and water reflections increase UV radiation potency.
Frequently asked questions
What is the average August temperature in Old Greenwich?
What is the least humid month in Old Greenwich?
What is the average humidity in August in Old Greenwich?
How much does it rain in Old Greenwich in August?
When it does not snow in Old Greenwich?
What is the month with the warmest ocean in Old Greenwich?
What is the water temperature in August in Old Greenwich?
What is the average length of the day in August in Old Greenwich?
What time are sunrise and sunset in August in Old Greenwich?
How long on average sun shines in August in Old Greenwich?
When is the highest UV index in Old Greenwich?
What is the UV index reading in August in Old Greenwich?
Average temperature in August
Old Greenwich, CT
- Average high temperature in August: 80.4°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (36°F).
- Average low temperature in August: 68.9°F
The month with the highest average low temperature is July (69.3°F).
The coldest month (with the lowest average low temperature) is January (26.2°F).
Average pressure in August
Old Greenwich, 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
Old Greenwich, CT
- Average wind speed in August: 6.7mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).
Average humidity in August
Old Greenwich, CT
- Average humidity in August: 71%
The months with the highest relative humidity are February, May, June and December (75%).
The month with the lowest relative humidity is August (71%).
Average rainfall in August
Old Greenwich, CT
- Average rainfall in August: 3.46"
The wettest month (with the highest rainfall) is July (4.13").
The driest month (with the least rainfall) is January (2.44").
Average rainfall days in August
Old Greenwich, CT
- Average rainfall days in August: 16.3 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is January (8.6 days).
Average snowfall in August
Old Greenwich, CT
- Average snowfall in August: 0"
The month with the highest snowfall is February (2.6").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in August
Old Greenwich, CT
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (7.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in August
Old Greenwich, CT
- Average sea temperature in August: 73.1°F
The best month for swimming (with the highest average sea temperature) is August (73.1°F).
The coldest month (with the lowest average sea temperature) is February (39.5°F).
Average daylight in August /
Average sunshine in August
Old Greenwich, CT
- Average daylight in August: 13h and 5min
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 1min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The months with the least sunshine are February and December (Average sunshine: 4h and 42min).
Average sunshine days in August
Old Greenwich, CT
- Average sunshine days in August: 12 days
The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is June (11.1 days).
Average UV index in August
Old Greenwich, 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
Old Greenwich, CT
- Average cloud cover in August: 31
The month with the most cloud cover is December (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in August
Old Greenwich, 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).
Old Greenwich, Connecticut, USA
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