August weather forecast
Sun Valley, FL

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Weather in August

The last month of the summer, August, is also a hot month in Sun Valley, Florida, with an average temperature varying between 86.7°F (30.4°C) and 81.5°F (27.5°C).

Temperature

The warmest time of the year is August, with temperatures averaging a high of 86.7°F (30.4°C) and a low of 81.5°F (27.5°C).

Heat index

The heat index for August is appraised at a torrid 98.6°F (37°C). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.
Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', unifies temperature and humidity readings to offer a comprehensive feel of warmth. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
Evaporating sweat, thanks to perspiration, acts as a natural air conditioner for the human body. When there is abundant moisture in the air, the body's cooling through the evaporation process becomes less effective, leading to the sensation of overheating. When body temperature rises due to an imbalance in heat gain, there's a potential for dehydration and overheating.

Humidity

The average relative humidity in August is 74%.

Rainfall

The month with the most rainfall is August, when the rain falls for 27.3 days and typically aggregates up to 9.06" (230mm) of precipitation.

Daylight

The average length of the day in August is 13h and 3min.
On the first day of August, sunrise is at 6:46 am and sunset at 8:07 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 7:41 pm EDT.

Sunshine

July and August, with an average of 10.7h of sunshine, are months with the most sunshine.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: An average UV index of 7 in August transforms into this advice:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Updated: Jun 26, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the hottest?

In Sun Valley, August is identified by the average highest temperatures, reaching a peak of 86.7°F (30.4°C) and a low of 81.5°F (27.5°C).

How hot is it in August?

In August, the average high-temperature and low-temperature are 86.7°F (30.4°C) and 81.5°F (27.5°C) respectively. The average heat index (a.k.a. 'felt air temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in August is appraised at 98.6°F (37°C).

What is the average humidity in August?

In August, the average relative humidity is 74%.

What is the rainiest month?

August is the month with the most rainfall. Rain falls for 27.3 days and accumulates 9.06" (230mm) of precipitation.

How much does it rain in August?

In Sun Valley, in August, during 27.3 rainfall days, 9.06" (230mm) of precipitation is typically accumulated.

What is the average length of the day in August?

The average day length in August is 13h and 3min.

What time are sunrise and sunset in August in Sun Valley?

In August, on the first day of the month, sunrise is at 6:46 am and sunset at 8:07 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 7:41 pm EDT.

What is the month with the most sunshine?

July and August, with an average of 10.7h of sunshine, are months with the most sunshine.

How many hours of sunshine does Sun Valley have in August?

In August, the average sunshine duration is 10.7h.

When is the highest UV index in Sun Valley?

May through September, with an average maximum UV index of 7, are months with the highest UV index.

How high is the UV index in August?

The average daily maximum UV index in August is 7. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Sun Valley, FL

Average temperature in August - Sun Valley, FL
  • Average high temperature in August: 86.7°F

The warmest month (with the highest average high temperature) is August (86.7°F).
The month with the lowest average high temperature is January (72.5°F).

  • Average low temperature in August: 81.5°F

The month with the highest average low temperature is August (81.5°F).
The coldest month (with the lowest average low temperature) is January (64°F).

Average pressure in August
Sun Valley, FL

Average pressure in August - Sun Valley, 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 (29.96"Hg).

Average wind speed in August
Sun Valley, FL

Average wind speed in August - Sun Valley, FL
  • Average wind speed in August: 8.1mph

The windiest month (with the highest average wind speed) is March (11.5mph).
The calmest month (with the lowest average wind speed) is July (7.7mph).

Average humidity in August
Sun Valley, FL

Average humidity in August - Sun Valley, FL
  • Average humidity in August: 74%

The months with the highest relative humidity are June and December (76%).
The month with the lowest relative humidity is March (70%).

Average rainfall in August
Sun Valley, FL

Average rainfall in August - Sun Valley, FL
  • Average rainfall in August: 9.06"

The wettest month (with the highest rainfall) is August (9.06").
The driest month (with the least rainfall) is January (1.3").

Average rainfall days in August
Sun Valley, FL

Average rainfall days in August - Sun Valley, FL
  • Average rainfall days in August: 27.3 days

The month with the highest number of rainy days is August (27.3 days).
The month with the least rainy days is February (13.3 days).

Average daylight in August /
Average sunshine in August
Sun Valley, FL

Average daylight in August / Average sunshine in August - Sun Valley, FL
  • Average daylight in August: 13h and 0min

The month with the longest days is June (Average daylight: 13h and 48min).
The month with the shortest days is December (Average daylight: 10h and 30min).

  • Average sunshine in August: 10h and 4min

The months with the most sunshine are July and August (Average sunshine: 10h and 42min).
The months with the least sunshine are January and December (Average sunshine: 6h and 0min).

Average sunshine days in August
Sun Valley, FL

Average sunshine days in August - Sun Valley, FL
  • Average sunshine days in August: 2.7 days

The month with the most sunshine days is March (12.7 days).
The month with the least sunshine days is July (2.3 days).

Average UV index in August
Sun Valley, FL

Average UV index in August - Sun Valley, 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 month with the lowest UV index is January (UV index 5).

Average cloud cover in August
Sun Valley, FL

Average cloud cover in August - Sun Valley, FL
  • Average cloud cover in August: 30

The months with the most cloud cover are January, October, November and December (Cloud cover 36).
The months with the least cloud cover are April and July (Cloud cover 29).

Average visibility in August
Sun Valley, FL

Average visibility in August - Sun Valley, 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).

Sun Valley, Florida, USA

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