August weather forecastMarco Island, FL

August
Weather in August
The sweaty grasp of summer continues into August. The temperatures show no sign of backing down, maintaining daily highs of 90°F (32.2°C) and rising to new lows at 75°F (23.9°C). The rainfall experiences a slight increase reaching 8" (203mm) across 16 rainy days. August transforms Marco Island into tropical paradise with its lush flora drinking from the monsoon showers. While an exhilarating time for nature walks, remember the prolonged exposure to the sun can necessitate frequent hydration.Temperature
Marco Island witnesses its highest temperatures in July through September, reaching an average of 89.6°F (32°C).Rainfall
In August, the rain falls for 16 days. Throughout August, 8.03" (204mm) of precipitation is accumulated. Throughout the year, there are 111 rainfall days, and 51.57" (1310mm) of precipitation is accumulated.Ocean temperature
The month with the warmest seawater is August, with an average ocean temperature of 87.4°F (30.8°C).Note: The quest for a cooling experience might be hindered in waters that exceed 86°F (30°C).
Daylight
In August, the average length of the day is 13h and 1min.On the first day of August, sunrise is at 6:53 am and sunset at 8:12 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 7:46 pm EDT.
Sunshine
In August, the average sunshine is 9h.UV index
The months with the highest UV index are April through August, with an average maximum UV index of 11. A UV Index estimate of 11, and higher, represents an extreme health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 11 in August converts into the following recommendations:
Execute all crucial precautions. Warding off sun exposure is non-negotiable. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. To cut down UV radiation exposure by about half, sport a wide-brim hat. Apply and frequently reapply a minimum SPF 30 sunscreen even on cloudy days, especially after swimming or an outdoor workout. Warning! The Sun's UV rays intensify with reflections from sand and water.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Marco Island, FL
- Average high temperature in August: 90°F
The warmest months (with the highest average high temperature) are July, August and September (90°F).
The months with the lowest average high temperature are January, February and December (75°F).
- Average low temperature in August: 75°F
The month with the highest average low temperature is August (75°F).
The coldest months (with the lowest average low temperature) are January and February (55°F).
Average rainfall in August
Marco Island, FL
- Average rainfall in August: 8"
The wettest month (with the highest rainfall) is June (9.2").
The driest months (with the least rainfall) are November and December (1.5").
Average rainfall days in August
Marco Island, FL
- Average rainfall days in August: 16 days
The month with the highest number of rainy days is August (16 days).
The month with the least rainy days is April (4 days).
Average sea temperature in August
Marco Island, FL
- Average sea temperature in August: 87.3°F
The best month for swimming (with the highest average sea temperature) is August (87.3°F).
The coldest months (with the lowest average sea temperature) are January and February (67.2°F).
Average daylight in August /
Average sunshine in August
Marco Island, 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: 9h
The months with the most sunshine are April, May, June and July (Average sunshine: 10h).
The months with the least sunshine are January, November and December (Average sunshine: 7h).
Average UV index in August
Marco Island, FL
- Average UV index in August: 11
The months with the highest UV index are April, May, June, July and August (UV index 11).
The month with the lowest UV index is December (UV index 5).





