August weather forecastSummerland Key, FL
August
Weather in August
The last month of the summer, August, is another warm month in Summerland Key, Florida, with an average temperature fluctuating between 83.1°F (28.4°C) and 85.3°F (29.6°C).Temperature
Summerland Key's August weather, marked by an average high temperature of 85.3°F (29.6°C) and an average low temperature of 83.1°F (28.4°C), is the warmest in the year.Heat index
August's heat index is calculated to be a sweltering 95°F (35°C). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.Heat index details are generally centered around shaded locations and a mild breeze. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is an estimation of the warmth sensation when considering humidity levels. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
When faced with excessive heat, the human body begins to perspire, utilizing the cooling benefits of sweat evaporation. An elevated level of relative humidity hinders evaporation, leading to decreased heat elimination from the body, inducing a sensation of excess heat. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.
Humidity
July through September, with an average relative humidity of 74%, are the least humid months.Rainfall
In Summerland Key, during August, the rain falls for 18.6 days and regularly aggregates up to 2.6" (66mm) of precipitation. In Summerland Key, during the entire year, the rain falls for 171.1 days and collects up to 21.54" (547mm) of precipitation.Daylight
In August, the average length of the day is 12h and 58min.On the first day of the month, sunrise is at 6:54 am and sunset at 8:09 pm. On the last day of August, sunrise is at 7:06 am and sunset at 7:44 pm EDT.
Sunshine
In Summerland Key, the average sunshine in August is 9.8h.UV index
The months with the highest UV index in Summerland Key, Florida, are April through October, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for the average person.Note: In August, the maximum UV index of 7 suggests this advice:
Fend off overexposure. Sun protection is vital. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Summerland 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
Summerland 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
Summerland 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
Summerland 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
Summerland 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
Summerland 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 daylight in August /
Average sunshine in August
Summerland 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
Summerland 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
Summerland 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
Summerland 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
Summerland 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).





