August weather forecast
Fort Myers, FL

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

The last month of the summer, August, is another hot month in Fort Myers, Florida, with an average temperature fluctuating between 79°F (26.1°C) and 89.4°F (31.9°C).

Temperature

August is the warmest month, with an average high-temperature of 89.4°F (31.9°C) and an average low-temperature of 79°F (26.1°C).

Heat index

In August, the average heat index is appraised at a blistering 107.6°F (42°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'apparent temperature', 'real feel', or 'felt air temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (differences in body mass, height, and shape, metabolic differences, pregnancy). Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 99.5°F (37.5°C) to 100.9°F (38.3°C), thermal conditions are potentially life-threatening.

Humidity

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

Rainfall

August is the month with the most rainfall. Rain falls for 22.7 days and accumulates 4.72" (120mm) of precipitation.

Ocean temperature

The month with the warmest seawater in Fort Myers, Florida, is August, with an average ocean temperature of 86°F (30°C).
Note: The water temperature above 86°F (30°C) is arguably regarded as unpleasant. The primary purpose of entering the water - cooling down from sunshine and high temperatures - is lost.

Daylight

The average length of the day in August in Fort Myers, Florida, 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 in Fort Myers is 9.6h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In August, the average maximum UV index of 7 translate into the following recommendations:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.
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FAQ

What is the warmest month in Fort Myers?

August is the warmest month, with an average high-temperature of 89.4°F (31.9°C) and an average low-temperature of 79°F (26.1°C).

What is the temperature in August in Fort Myers?

In August, in Fort Myers, Florida, the average high-temperature is 89.4°F (31.9°C), and the average low-temperature is 79°F (26.1°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which represents the influence of relative humidity on air temperature, in August is appraised at 107.6°F (42°C).

What is the average humidity in August in Fort Myers?

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

What is the rainiest month in Fort Myers?

August is the month with the most rainfall in Fort Myers, Florida. Rain falls for 22.7 days and accumulates 4.72" (120mm) 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" (120mm) of precipitation is typically accumulated.

When is the ocean warmest in Fort Myers?

With an average ocean temperature of 86°F (30°C), August is the month with the warmest seawater in Fort Myers, Florida.

What is the ocean temperature in August in Fort Myers?

In Fort Myers, Florida, in August, the average water temperature is 86°F (30°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.

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

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

When are sunrise and sunset in August in Fort Myers?

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.

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

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

What is the month with 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 in Fort Myers, Florida.

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

The average daily maximum UV index in August is 7. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
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 3min

The month with the longest days is June (Average daylight: 13h and 47min).
The month with the shortest days is December (Average daylight: 10h and 30min).

  • Average sunshine in August: 9h and 36min

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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