August weather forecast
Marco Island, FL

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Sunset over the beach in Marco Island Beach, Florida, along the Gulf of Mexico
Sunset over the beach in Marco Island Beach, Florida, along the Gulf of Mexico

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.
Updated: Aug 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the warmest months?

In Marco Island, the warmest months are July through September, registering an average high-temperature of 89.6°F (32°C).

How hot is it in August?

The average high-temperature, in August, in Marco Island, is 89.6°F (32°C), while the average low-temperature is 75.2°F (24°C).

How much does it rain in August?

In August, the rain falls for 16 days. Throughout August, 8.03" (204mm) of precipitation is accumulated.

What is the month with the warmest ocean?

With an average ocean temperature of 87.4°F (30.8°C), August is the month with the warmest seawater.

What is the ocean temperature in August?

In August, the average ocean temperature in Marco Island is 87.4°F (30.8°C). The surface water temperatures above 86°F (30°C) are arguably considered as unpleasant for swimming, and any intense water activity, as the refreshing effect of water is missing.

What is the average length of the day in August in Marco Island?

In Marco Island, the average day length in August is 13h and 1min.

When are sunrise and sunset in August?

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.

How many hours of sunshine does Marco Island have in August?

In Marco Island, Florida, the average sunshine duration in August is 9h.

What are the months with the highest UV index?

April through August, with an average maximum UV index of 11, are months with the highest UV index.

How high is the UV index in August?

The average daily maximum UV index in August is 11. A UV Index estimate of 11, and higher, represents an extreme health threat from exposure to Sun's UV rays.
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in August
Marco Island, FL

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 - 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 - 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 - 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 / 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 - 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).

Marco Island, Florida, USA

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