August weather forecastRio Vista Isles, FL
August
Weather in August
The last month of the summer, August, is also a hot month in Rio Vista Isles, Florida, with an average temperature fluctuating between 87.4°F (30.8°C) and 82°F (27.8°C).Temperature
The average temperatures reach their apex in August, averaging 87.4°F (30.8°C) at the high end and 82°F (27.8°C) at the low end.Heat index
The heat index value for August is evaluated at a fiery hot 100.4°F (38°C). Adopt heightened safety measures, heat cramps and heat exhaustion may occur. Sustained activity might cause heatstroke.It is emphasized that the heat index's values are meant for shaded zones with mild winds. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a numerical representation of warmth when taking temperature and moisture levels into account. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Children frequently do not understand the need for recuperation and hydration. Thirst, being a late manifestation of dehydration, underlines the need to hydrate frequently, especially when engaging in prolonged physical exercises.
The process of perspiration is vital for the human body to get rid of excess warmth by allowing sweat to evaporate. Under conditions of high temperature and humidity (enhanced heat index), sweat production is compromised, exacerbating the sensation of warmth. Inadequate heat shedding in the face of rising body temperatures hints at potential dehydration risks.
Humidity
In August, the average relative humidity is 72%.Rainfall
August is the month with the most rainfall. Rain falls for 22.3 days and accumulates 2.68" (68mm) of precipitation.Daylight
The average length of the day in August is 13h and 2min.On the first day of the month, sunrise is at 6:46 am and sunset at 8:06 pm. On the last day of August, sunrise is at 7:00 am and sunset at 7:40 pm EDT.
Sunshine
The average sunshine in August is 10.7h.UV index
The months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index of 7 in August converts into the following recommendations:
Shun overexposure. Protection from sun ravages is indispensable. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Rio Vista Isles, FL
- Average high temperature in August: 87.4°F
The warmest month (with the highest average high temperature) is August (87.4°F).
The month with the lowest average high temperature is January (73°F).
- Average low temperature in August: 82°F
The month with the highest average low temperature is August (82°F).
The coldest month (with the lowest average low temperature) is January (64.2°F).
Average pressure in August
Rio Vista Isles, FL
- Average pressure in August: 29.99"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are September and October (29.95"Hg).
Average wind speed in August
Rio Vista Isles, FL
- Average wind speed in August: 8.1mph
The windiest month (with the highest average wind speed) is March (11.3mph).
The calmest month (with the lowest average wind speed) is July (7.8mph).
Average humidity in August
Rio Vista Isles, FL
- Average humidity in August: 72%
The month with the highest relative humidity is December (75%).
The month with the lowest relative humidity is March (69%).
Average rainfall in August
Rio Vista Isles, FL
- Average rainfall in August: 2.68"
The wettest month (with the highest rainfall) is August (2.68").
The driest month (with the least rainfall) is January (0.39").
Average rainfall days in August
Rio Vista Isles, FL
- Average rainfall days in August: 22.3 days
The month with the highest number of rainy days is September (23.6 days).
The month with the least rainy days is February (8.3 days).
Average daylight in August /
Average sunshine in August
Rio Vista Isles, 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 30min).
- Average sunshine in August: 10h and 42min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The months with the least sunshine are January and December (Average sunshine: 6h and 18min).
Average sunshine days in August
Rio Vista Isles, FL
- Average sunshine days in August: 4.2 days
The month with the most sunshine days is January (17.4 days).
The month with the least sunshine days is September (3.9 days).
Average UV index in August
Rio Vista Isles, FL
- Average UV index in August: 7
The months with the highest UV index are May, June, July, August and September (UV index 7).
The months with the lowest UV index are January and December (UV index 5).
Average cloud cover in August
Rio Vista Isles, FL
- Average cloud cover in August: 29
The month with the most cloud cover is October (Cloud cover 35).
The month with the least cloud cover is April (Cloud cover 27).
Average visibility in August
Rio Vista Isles, 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).





