Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average sea temperature in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
During the warmest month, August, temperatures average a high of 85.3°F (29.6°C) and a low of 82.9°F (28.3°C).Heat index
The heat index for August is computed to be a very hot 95°F (35°C). Adopt heightened preventive measures, heat exhaustion and heat cramps are probable. Persistent activity could lead to heatstroke.Data suggests that the heat index is set for environments in shade and with a light wind. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', evaluates the perceived heat by adding the effect of moisture in the air. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
The body's self-cooling mechanism is rooted in perspiration, where evaporating sweat cools down excessive warmth. A surge in relative humidity can disrupt the body's normal cooling function by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.
Humidity
The months with the lowest humidity are July through September, with an average relative humidity of 74%.Rainfall
In Stock Island, during August, the rain falls for 23.1 days and regularly aggregates up to 4.33" (110mm) of precipitation. In Stock Island, during the entire year, the rain falls for 199.2 days and collects up to 31.61" (803mm) of precipitation.Ocean temperature
With an average ocean temperature of 86.9°F (30.5°C), August is the month with the warmest seawater.Note: When the water's temperature hits more than 86°F (30°C), it arguably becomes less enjoyable for cooling down.
Daylight
In August, the average length of the day is 12h and 58min.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 7:08 am and sunset at 7:46 pm EDT.
Sunshine
In August, the average sunshine is 9.7h.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 vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 7 in August converts into the following recommendations:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Attention! The reflection of both water and sand can increase the intensity of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the warmest month?
How hot does it get in Stock Island in August?
What are the least humid months?
What is the average humidity in August?
How many days does it rain in August?
When is the ocean warmest?
What is the ocean temperature in August?
What is the average length of the day in August?
What time are sunrise and sunset in August?
How long on average sun shines in August?
What is the month with the highest UV index?
What is the UV index intensity in August?
Average temperature in August
Stock Island, 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: 82.9°F
The month with the highest average low temperature is August (82.9°F).
The coldest month (with the lowest average low temperature) is January (68.5°F).
Average pressure in August
Stock Island, 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
Stock Island, FL
- Average wind speed in August: 10.1mph
The windiest months (with the highest average wind speed) are January and November (14.4mph).
The calmest month (with the lowest average wind speed) is July (9.5mph).
Average humidity in August
Stock Island, 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
Stock Island, FL
- Average rainfall in August: 4.33"
The wettest month (with the highest rainfall) is September (5.12").
The driest month (with the least rainfall) is March (0.67").
Average rainfall days in August
Stock Island, FL
- Average rainfall days in August: 23.1 days
The months with the highest number of rainy days are August and September (23.1 days).
The month with the least rainy days is February (11 days).
Average sea temperature in August
Stock Island, 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
Stock Island, 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 4min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 18min).
Average sunshine days in August
Stock Island, FL
- Average sunshine days in August: 6.2 days
The month with the most sunshine days is March (17 days).
The month with the least sunshine days is September (4.5 days).
Average UV index in August
Stock Island, 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
Stock Island, FL
- Average cloud cover in August: 28
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
Stock Island, 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).
Stock Island, Florida, USA
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