August weather forecastBay Harbor Islands, FL
August
Weather in August
The last month of the summer, August, is another hot month in Bay Harbor Islands, Florida, with temperature in the range of an average high of 87.6°F (30.9°C) and an average low of 82°F (27.8°C).Temperature
The average temperatures reach their apex in August, averaging 87.6°F (30.9°C) at the high end and 82°F (27.8°C) at the low end.Heat index
In August, the average heat index is appraised at a very hot 100.4°F (38°C). Ensure extra safety measures, heat exhaustion and heat cramps are likely. Continuous activity might result in heatstroke.It is worth noting that heat index values are gauged for conditions in the shade and light breezes. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'feels like' or 'real feel', blends air temperature and moisture content to represent the felt temperature to humans. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
To offset high temperatures, the human body releases sweat which, upon evaporation, cools it down. Greater relative humidity lessens the rate of evaporation, thus decreasing the body's heat dispersal, which gives rise to a sensation of overheating. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.
Humidity
The average relative humidity in August in Bay Harbor Islands is 71%.Rainfall
August is the month with the most rainfall. Rain falls for 20.2 days and accumulates 1.97" (50mm) of precipitation.Snowfall
January through August, October through December are months without snowfall.Ocean temperature
August is the month with the warmest seawater in Bay Harbor Islands, with an average ocean temperature of 86.5°F (30.3°C).Note: Swimming in waters heated beyond 86°F (30°C) can arguably feel less refreshing.
Daylight
In Bay Harbor Islands, the average length of the day in August 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, in Bay Harbor Islands, sunrise is at 7:00 am and sunset at 7:40 pm EDT.
Sunshine
In Bay Harbor Islands, the average sunshine in August is 10.6h.UV index
The months with the highest UV index in Bay Harbor Islands, Florida, are May through September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for average individuals.Note: The daily high UV index of 7 during August translates into the following recommendations:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Caution! The mirror effect of sand and water ups the UV radiation strength.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Bay Harbor Islands, FL
- Average high temperature in August: 87.6°F
The warmest month (with the highest average high temperature) is August (87.6°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°F).
Average pressure in August
Bay Harbor Islands, 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
Bay Harbor Islands, FL
- Average wind speed in August: 8.1mph
The windiest month (with the highest average wind speed) is March (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.7mph).
Average humidity in August
Bay Harbor Islands, 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
Bay Harbor Islands, FL
- Average rainfall in August: 1.97"
The wettest month (with the highest rainfall) is August (1.97").
The driest month (with the least rainfall) is January (0.31").
Average rainfall days in August
Bay Harbor Islands, FL
- Average rainfall days in August: 20.2 days
The month with the highest number of rainy days is September (21.7 days).
The month with the least rainy days is February (6.8 days).
Average snowfall in August
Bay Harbor Islands, FL
- Average snowfall in August: 0"
The month with the highest snowfall is September (0.04").
The months with the least snowfall are January, February, March, April, May, June, July, August, October, November and December (0").
Average snowfall days in August
Bay Harbor Islands, FL
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is September (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, October, November and December (0 days).
Average sea temperature in August
Bay Harbor Islands, 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
Bay Harbor Islands, 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 36min
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
Bay Harbor Islands, FL
- Average sunshine days in August: 4.9 days
The month with the most sunshine days is March (20.3 days).
The month with the least sunshine days is September (4.4 days).
Average UV index in August
Bay Harbor Islands, 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
Bay Harbor Islands, 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
Bay Harbor Islands, 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).





