August weather forecastSurfside, FL
August
Weather in August
The last month of the summer, August, is also a hot month in Surfside, Florida, with an average temperature ranging between min 82°F (27.8°C) and max 88°F (31.1°C).Temperature
With its high average temperature of 88°F (31.1°C) and a low of 82°F (27.8°C), August is regarded as the warmest month.Heat index
In August, the heat index is estimated at a fiery hot 100.4°F (38°C). Exercise enhanced safety steps, heat cramps and heat exhaustion are probable. Heatstroke could be a result of sustained activity.Metrics for the heat index primarily focus on shaded spots and light wind conditions. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'real feel' or 'feels like', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
When faced with excessive heat, the human body begins to perspire, utilizing the cooling benefits of sweat evaporation. Higher relative humidity impedes evaporation, thus reducing heat dispersion from the body, culminating in a sensation of overheating. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.
Humidity
The average relative humidity in August is 71%.Rainfall
The month with the most rainfall is August, when the rain falls for 20.3 days and typically aggregates up to 2.2" (56mm) of precipitation.Ocean temperature
With an average ocean temperature of 86.5°F (30.3°C), August is the month with the warmest seawater.Note: When the aim is to cool down, temperatures above 86°F (30°C) in waters might not be very inviting.
Daylight
In August, the average length of the day is 13h and 1min.On the first day of the month, sunrise is at 6:47 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: In August, the average maximum UV index of 7 translates into the following recommendations:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Heads up! The reflection of sand and water notably intensifies UV rays from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Surfside, FL
- Average high temperature in August: 88°F
The warmest month (with the highest average high temperature) is August (88°F).
The month with the lowest average high temperature is January (73.4°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°F).
Average pressure in August
Surfside, 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
Surfside, FL
- Average wind speed in August: 7.9mph
The windiest month (with the highest average wind speed) is March (10.8mph).
The calmest month (with the lowest average wind speed) is July (7.6mph).
Average humidity in August
Surfside, FL
- Average humidity in August: 71%
The month with the highest relative humidity is December (75%).
The month with the lowest relative humidity is March (69%).
Average rainfall in August
Surfside, FL
- Average rainfall in August: 2.2"
The wettest month (with the highest rainfall) is August (2.2").
The driest month (with the least rainfall) is January (0.39").
Average rainfall days in August
Surfside, FL
- Average rainfall days in August: 20.3 days
The month with the highest number of rainy days is September (21.3 days).
The month with the least rainy days is February (7.5 days).
Average sea temperature in August
Surfside, FL
- Average sea temperature in August: 86.5°F
The best month for swimming (with the highest average sea temperature) is August (86.5°F).
The coldest month (with the lowest average sea temperature) is February (74°F).
Average daylight in August /
Average sunshine in August
Surfside, 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 36min).
- Average sunshine in August: 10h and 42min
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 24min).
Average sunshine days in August
Surfside, FL
- Average sunshine days in August: 5.3 days
The month with the most sunshine days is March (20 days).
The month with the least sunshine days is September (5.1 days).
Average UV index in August
Surfside, 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
Surfside, FL
- Average cloud cover in August: 28
The month with the most cloud cover is October (Cloud cover 34).
The month with the least cloud cover is April (Cloud cover 26).
Average visibility in August
Surfside, 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).





