August weather forecast
Big Coppitt Key, FL

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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.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the hottest time of year in Big Coppitt Key?

August, with average temperatures reaching a high of 85.3°F (29.6°C) and a low of 83.1°F (28.4°C), is the warmest month in Big Coppitt Key, Florida.

How hot is August in Big Coppitt Key?

The high-temperature during August is 85.3°F (29.6°C) and the low-temperature is 83.1°F (28.4°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines relative humidity and air temperature, in August is computed to be 95°F (35°C).

What are the least humid months in Big Coppitt Key?

The months with the lowest humidity in Big Coppitt Key, Florida, are July through September, with an average relative humidity of 74%.

What is the average humidity in August in Big Coppitt Key?

In August, the average relative humidity in Big Coppitt Key, Florida, is 74%.

How many days does it rain in August in Big Coppitt Key?

In August, in Big Coppitt Key, Florida, the rain falls for 18.6 days. Throughout August, 2.6" (66mm) of precipitation is accumulated.

When is the ocean warmest in Big Coppitt Key?

With an average ocean temperature of 86.9°F (30.5°C), August is the month with the warmest seawater in Big Coppitt Key.

How warm is the water in August in Big Coppitt Key?

In August, the average ocean temperature in Big Coppitt Key, Florida, is 86.9°F (30.5°C). For swimming, other intense water activities, temperature above 86°F (30°C) is arguably unpleasant, as the water cooling effect is missing.

What is the average length of the day in August in Big Coppitt Key?

The average day length in August is 12h and 58min.

What time are sunrise and sunset in August in Big Coppitt Key?

On the first day of August, 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.

How many hours of sunshine does Big Coppitt Key have in August?

In Big Coppitt Key, Florida, the average sunshine duration in August is 9.8h.

What is the month with the highest UV index in Big Coppitt Key?

The months with the highest UV index in Big Coppitt Key are April through October, with an average maximum UV index of 7.

What is the UV index reading in August in Big Coppitt Key?

In August, the average daily maximum UV index is 7. A UV Index reading of 6 to 7 represents a high health threat from exposure to the Sun's UV radiation.

Average temperature in August
Big Coppitt Key, FL

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 - 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 - 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 - 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 - 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 - 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 - 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 / 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 5min

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 - 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 - 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 - 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 - 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).

Big Coppitt Key, Florida, USA

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