August weather forecastBig Coppitt Key, FL
August
Weather in August
The last month of the summer, August, is another warm month in Big Coppitt Key, Florida, with an average temperature ranging between max 85.3°F (29.6°C) and min 83.1°F (28.4°C).Temperature
The average temperatures reach their apex in August, averaging 85.3°F (29.6°C) at the high end and 83.1°F (28.4°C) at the low end.Heat index
The heat index value for August is computed to be a very hot 95°F (35°C). Adopt special protective actions against heat exhaustion and heat cramps. Long-duration activity risks heatstroke.Records show heat index calculations are tailored for shaded regions and mild winds. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', quantifies the warmth felt when relative humidity is considered. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are highly critical for babies and toddlers. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. Increased relative humidity slows down evaporation, thereby decreasing the rate of heat removal from the body, culminating in a sensation of overheating. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.
Humidity
The months with the lowest humidity are July through September, with an average relative humidity of 74%.Rainfall
In Big Coppitt Key, in August, during 18.6 rainfall days, 2.6" (66mm) of precipitation is typically accumulated. Throughout the year, in Big Coppitt Key, there are 171.1 rainfall days, and 21.54" (547mm) of precipitation is accumulated.Ocean temperature
August is the month with the warmest seawater in Big Coppitt Key, with an average ocean temperature of 86.9°F (30.5°C).Note: Many feel that waters warmer than 86°F (30°C) fail to offer the same rejuvenating touch.
Daylight
The average length of the day in August in Big Coppitt Key is 12h and 58min.On the first day of August in Big Coppitt Key, sunrise is at 6:55 am and sunset at 8:10 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 7:45 pm EDT.
Sunshine
In August, the average sunshine is 9.8h.UV index
The months with the highest UV index are April through October, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In August, a regular UV index of 7 translates into these guidelines:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. 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. Boost your sun resistance with garments that are densely woven yet spacious. Warning! The Sun's UV rays intensify with reflections from sand and water.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Big Coppitt Key, FL
- Average high temperature in August: 85.3°F
The warmest month (with the highest average high temperature) is August (85.3°F).
The month with the lowest average high temperature is January (72.7°F).
- Average low temperature in August: 83.1°F
The month with the highest average low temperature is August (83.1°F).
The coldest month (with the lowest average low temperature) is January (68.5°F).
Average pressure in August
Big Coppitt Key, FL
- Average pressure in August: 29.97"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are September and October (29.93"Hg).
Average wind speed in August
Big Coppitt Key, FL
- Average wind speed in August: 10mph
The windiest month (with the highest average wind speed) is November (14.4mph).
The calmest month (with the lowest average wind speed) is July (9.4mph).
Average humidity in August
Big Coppitt Key, FL
- Average humidity in August: 74%
The month with the highest relative humidity is February (78%).
The months with the lowest relative humidity are July, August and September (74%).
Average rainfall in August
Big Coppitt Key, FL
- Average rainfall in August: 2.6"
The wettest month (with the highest rainfall) is September (3.54").
The driest month (with the least rainfall) is March (0.43").
Average rainfall days in August
Big Coppitt Key, FL
- Average rainfall days in August: 18.6 days
The month with the highest number of rainy days is September (20.8 days).
The month with the least rainy days is March (9.4 days).
Average sea temperature in August
Big Coppitt Key, FL
- Average sea temperature in August: 86.9°F
The best month for swimming (with the highest average sea temperature) is August (86.9°F).
The coldest months (with the lowest average sea temperature) are January and February (71.2°F).
Average daylight in August /
Average sunshine in August
Big Coppitt Key, FL
- Average daylight in August: 13h and 0min
The month with the longest days is June (Average daylight: 13h and 36min).
The month with the shortest days is December (Average daylight: 10h and 36min).
- Average sunshine in August: 9h and 48min
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 30min).
Average sunshine days in August
Big Coppitt Key, FL
- Average sunshine days in August: 10.8 days
The month with the most sunshine days is March (19.6 days).
The month with the least sunshine days is September (6.2 days).
Average UV index in August
Big Coppitt 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
Big Coppitt Key, FL
- Average cloud cover in August: 27
The month with the most cloud cover is January (Cloud cover 34).
The month with the least cloud cover is April (Cloud cover 23).
Average visibility in August
Big Coppitt 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).





