August weather forecastDuck Key, FL
August
Weather in August
The last month of the summer, August, is also a moderately hot month in Duck Key, Florida, with temperature in the range of an average high of 85.5°F (29.7°C) and an average low of 82.9°F (28.3°C).Temperature
The warmest month is August, with an average high-temperature of 85.5°F (29.7°C) and an average low-temperature of 82.9°F (28.3°C).Heat index
The heat index value for August is appraised at a sweltering 95°F (35°C). Adopt extra safety steps, risk of heat exhaustion and heat cramps is notable. Sustained activity might cause heatstroke.Records show heat index calculations are tailored for shaded regions and mild winds. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is an aggregate value of air's warmth and moisture to show the human-felt temperature. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
Evaporation of sweat is the main factor behind the cooling effect of perspiration in the human body. Under conditions of increased relative humidity, the evaporation rate lessens, causing the body to retain more heat than under less humid conditions. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.
Humidity
In Duck Key, the average relative humidity in August is 74%.Rainfall
In Duck Key, in August, it is raining for 21 days, with typically 3.31" (84mm) of accumulated precipitation. In Duck Key, during the entire year, the rain falls for 186.2 days and collects up to 24.45" (621mm) of precipitation.Ocean temperature
With an average ocean temperature of 86.5°F (30.3°C), August is the month with the warmest seawater.Note: The surface water temperatures above 86°F (30°C) are arguably considered as unpleasant for swimming, and any intense water activity, as the refreshing effect of water is missing.
Daylight
In August, the average length of the day is 12h and 59min.On the first day of August, sunrise is at 6:52 am and sunset at 8:07 pm. On the last day of the month, sunrise is at 7:04 am and sunset at 7:42 pm EDT.
Sunshine
In August, the average sunshine is 10.1h.UV index
April through October, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: The UV index of 7 during August leads to these advisories:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Stay cautious! Sand and water reflections increase UV radiation potency.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Duck Key, FL
- Average high temperature in August: 85.5°F
The warmest month (with the highest average high temperature) is August (85.5°F).
The month with the lowest average high temperature is January (72.9°F).
- Average low temperature in August: 82.9°F
The month with the highest average low temperature is August (82.9°F).
The coldest month (with the lowest average low temperature) is January (67.5°F).
Average pressure in August
Duck Key, FL
- Average pressure in August: 29.98"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are September and October (29.94"Hg).
Average wind speed in August
Duck Key, FL
- Average wind speed in August: 9.5mph
The windiest month (with the highest average wind speed) is January (13.4mph).
The calmest month (with the lowest average wind speed) is July (9mph).
Average humidity in August
Duck Key, FL
- Average humidity in August: 74%
The months with the highest relative humidity are February and December (77%).
The month with the lowest relative humidity is March (73%).
Average rainfall in August
Duck Key, FL
- Average rainfall in August: 3.31"
The wettest month (with the highest rainfall) is September (4.21").
The driest month (with the least rainfall) is March (0.43").
Average rainfall days in August
Duck Key, FL
- Average rainfall days in August: 21 days
The month with the highest number of rainy days is September (23 days).
The month with the least rainy days is February (10.3 days).
Average sea temperature in August
Duck Key, FL
- Average sea temperature in August: 86.6°F
The best month for swimming (with the highest average sea temperature) is August (86.6°F).
The coldest months (with the lowest average sea temperature) are January and February (73.9°F).
Average daylight in August /
Average sunshine in August
Duck Key, FL
- Average daylight in August: 13h and 0min
The month with the longest days is June (Average daylight: 13h and 42min).
The month with the shortest days is December (Average daylight: 10h and 36min).
- Average sunshine in August: 10h and 6min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).
Average sunshine days in August
Duck Key, FL
- Average sunshine days in August: 7.3 days
The month with the most sunshine days is March (18 days).
The month with the least sunshine days is September (4.6 days).
Average UV index in August
Duck Key, FL
- Average UV index in August: 7
The months with the highest UV index are April, May, June, July, August, September and October (UV index 7).
The month with the lowest UV index is January (UV index 5).
Average cloud cover in August
Duck Key, FL
- Average cloud cover in August: 28
The months with the most cloud cover are January and October (Cloud cover 32).
The month with the least cloud cover is April (Cloud cover 23).
Average visibility in August
Duck Key, FL
- 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).
