August weather forecast
Fort Myers, FL

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Dusk over the pier bridge in Fort Myers, Florida, with cloudy skies and calm waters below
Dusk over the pier bridge in Fort Myers, Florida, with cloudy skies and calm waters below

Weather in August

August brings a slight increase in temperature, but the mercury stays below the annual maximum observed in July. Rainfall climbs further, contributing to the general humidity. However, the expansive daylight and numerous sunny hours ensure that the dampness doesn't overshadow the warmth and natural beauty of Fort Myers. The UV index remains high, prompting the need for necessary sun protection measures. Wind speed and pressure stay in their steady mid-year ranges, presenting a tranquil atmosphere.

Temperature

August is the month when Fort Myers's temperatures reach their peak, with averages of 89.4°F and lows of 79°F.

Heat index

The heat index in August is computed to be a blistering 107.6°F. Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.
Records show heat index calculations are tailored for shaded regions and mild winds. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'real feel', combines both the air temperature and the humidity level to give a perceived human temperature. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. Elevated relative humidity diminishes evaporation, thereby reducing the body's ability to shed heat and creating a feeling of being too warm. As body temperatures escalate without effective heat release, one might face dehydration threats.

Humidity

The average relative humidity in August is 75%.

Rainfall

The month with the most rainfall in Fort Myers is August, when the rain falls for 22.7 days and typically aggregates up to 4.72" of precipitation.

Ocean temperature

August is the month with the warmest seawater in Fort Myers, Florida, with an average ocean temperature of 86°F.
Note: Waters that are warmer than 86°F might not provide the cooling effect most people seek during hot days.

Daylight

In Fort Myers, the average length of the day in August is 13h and 3min.
On the first day of August, sunrise is at 6:52 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 7:48 pm EDT.

Sunshine

In August, the average sunshine is 9.6h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index in Fort Myers, Florida. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: A maximum high daily UV index of 7 during August translates into the following directions:
Guard against overexposure. Protection from sun-induced harm is essential. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Alert! UV radiation becomes sharper due to reflections from sand and water.
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FAQ

What time of the year is the hottest in Fort Myers?

Fort Myers's August weather, marked by an average high temperature of 89.4°F and an average low temperature of 79°F, is the warmest in the year.

How hot does it get in Fort Myers in August?

The high-temperature, in August, in Fort Myers, is 89.4°F, while the low-temperature averages to 79°F. The average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines air temperature and relative humidity, in August is computed to be 107.6°F.

What is the average humidity in August in Fort Myers?

The average relative humidity in August in Fort Myers, Florida, is 75%.

What is the wettest month in Fort Myers?

The month with the most rainfall in Fort Myers, Florida, is August, when the rain falls for 22.7 days and typically aggregates up to 4.72" of precipitation.

How many days does it rain in August in Fort Myers?

In Fort Myers, Florida, in August, during 22.7 rainfall days, 4.72" of precipitation is typically accumulated.

What month is the ocean warmest in Fort Myers?

The month with the warmest seawater in Fort Myers is August, with an average ocean temperature of 86°F.

How warm is the water in August in Fort Myers?

In August, the average ocean temperature in Fort Myers is 86°F. The surface water temperatures above 86°F are arguably considered as unpleasant for swimming, and any intense water activity, as the refreshing effect of water is missing.

How many hours of daylight does Fort Myers have in August?

In Fort Myers, Florida, the average day length in August is 13h and 3min.

When is the sunrise / sunset in August in Fort Myers?

In August, on the first day of the month, sunrise is at 6:52 am and sunset at 8:15 pm. On the last day of the month, in Fort Myers, Florida, sunrise is at 7:06 am and sunset at 7:48 pm EDT.

How long on average sun shines in August in Fort Myers?

In August, the average sunshine duration in Fort Myers, Florida, is 9.6h.

When is the highest UV index in Fort Myers?

May through September, with an average maximum UV index of 7, are months with the highest UV index.

What is the UV index reading in August in Fort Myers?

In Fort Myers, the average daily maximum UV index in August is 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average sea temperature
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Fort Myers, FL

Average temperature in August - Fort Myers, FL
  • Average high temperature in August: 89.4°F

The warmest month (with the highest average high temperature) is August (89.4°F).
The month with the lowest average high temperature is January (71.1°F).

  • Average low temperature in August: 79°F

The month with the highest average low temperature is August (79°F).
The coldest month (with the lowest average low temperature) is January (56.7°F).

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Average pressure in August
Fort Myers, FL

Average pressure in August - Fort Myers, FL
  • Average pressure in August: 29.98"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is September (29.95"Hg).

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Average wind speed in August
Fort Myers, FL

Average wind speed in August - Fort Myers, FL
  • Average wind speed in August: 6mph

The windiest months (with the highest average wind speed) are October and November (8.1mph).
The calmest month (with the lowest average wind speed) is July (5.7mph).

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Average humidity in August
Fort Myers, FL

Average humidity in August - Fort Myers, FL
  • Average humidity in August: 75%

The months with the highest relative humidity are September and December (76%).
The month with the lowest relative humidity is March (71%).

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Average rainfall in August
Fort Myers, FL

Average rainfall in August - Fort Myers, FL
  • Average rainfall in August: 4.72"

The wettest month (with the highest rainfall) is August (4.72").
The driest months (with the least rainfall) are February and March (0.63").

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Average rainfall days in August
Fort Myers, FL

Average rainfall days in August - Fort Myers, FL
  • Average rainfall days in August: 22.7 days

The month with the highest number of rainy days is August (22.7 days).
The month with the least rainy days is January (6.3 days).

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Average sea temperature in August
Fort Myers, FL

Average sea temperature in August - Fort Myers, FL
  • Average sea temperature in August: 86°F

The best month for swimming (with the highest average sea temperature) is August (86°F).
The coldest month (with the lowest average sea temperature) is February (70°F).

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Average daylight in August /
Average sunshine in August
Fort Myers, FL

Average daylight in August / Average sunshine in August - Fort Myers, FL
  • Average daylight in August: 13h and 1min

The month with the longest days is June (Average daylight: 13h and 48min).
The month with the shortest days is December (Average daylight: 10h and 30min).

  • Average sunshine in August: 9h and 4min

The months with the most sunshine are May and July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).

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Average sunshine days in August
Fort Myers, FL

Average sunshine days in August - Fort Myers, FL
  • Average sunshine days in August: 5.9 days

The month with the most sunshine days is January (23 days).
The month with the least sunshine days is August (5.9 days).

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Average UV index in August
Fort Myers, FL

Average UV index in August - Fort Myers, 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, February and December (UV index 5).

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Average cloud cover in August
Fort Myers, FL

Average cloud cover in August - Fort Myers, FL
  • Average cloud cover in August: 28

The months with the most cloud cover are January and December (Cloud cover 29).
The months with the least cloud cover are March, April and May (Cloud cover 24).

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Average visibility in August
Fort Myers, FL

Average visibility in August - Fort Myers, 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).

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Fort Myers, Florida, USA

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