August weather forecast
Fort Myers Beach, FL

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Weather in August

August holds onto the weather patterns witnessed in July, with a marginal increase in both average high temperature and rainfall. This month records the highest sea temperature, making it quite remarkable. The humidity levels remain stable, and the city continues to receive ample sunlight. However, the gusty winds are muted a bit, adding to the overall warmth. As summer draws a close, the city transitions to a slightly cooler September.

Temperature

Fort Myers Beach's August weather, marked by an average high temperature of 88°F (31.1°C) and an average low temperature of 81.1°F (27.3°C), is the warmest in the year.

Heat index

The heat index value for August is calculated to be a very hot 102.2°F (39°C). Exercise special caution, heat exhaustion and heat cramps are probable. Prolonged activity may induce heatstroke.
Be informed that the heat index values are oriented around shady conditions and gentle breezes. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is an estimation of the warmth sensation when considering humidity levels. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
When faced with excessive heat, the human body begins to perspire, utilizing the cooling benefits of sweat evaporation. In the presence of high relative humidity, the evaporation rate diminishes, resulting in the body retaining more warmth compared to dry conditions. As body temperatures escalate without effective heat release, one might face dehydration threats.

Humidity

March, May, July, August and October, with an average relative humidity of 73%, are the least humid months.

Rainfall

August is the month with the most rainfall in Fort Myers Beach. Rain falls for 27.3 days and accumulates 8.54" (217mm) of precipitation.

Ocean temperature

The month with the warmest seawater in Fort Myers Beach, Florida, is August, with an average ocean temperature of 87.3°F (30.7°C).
Note: Intense water activities might lose their appeal in waters that are warmer than 86°F (30°C).

Daylight

In Fort Myers Beach, the average length of the day in August is 13h and 2min.
On the first day of the month, sunrise is at 6:53 am and sunset at 8:14 pm. On the last day of August, sunrise is at 7:07 am and sunset at 7:48 pm EDT.

Sunshine

The average sunshine in August in Fort Myers Beach 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 reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum daily UV index, 7 in August, converts into the following recommendations:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Heads up! UV intensity is amplified by reflections from water and sand.
Updated: Aug 30, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the hottest?

August, with average temperatures reaching a high of 88°F (31.1°C) and a low of 81.1°F (27.3°C), is the warmest month.

How hot is August?

In Fort Myers Beach, in August, the average high-temperature is 88°F (31.1°C), and the average low-temperature is 81.1°F (27.3°C). In August, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which represents the influence of relative humidity on air temperature, is calculated to be 102.2°F (39°C).

What is the least humid month?

The months with the lowest humidity are March, May, July, August and October, with an average relative humidity of 73%.

What is the average humidity in August?

In Fort Myers Beach, the average relative humidity in August is 73%.

What is the rainiest month?

The month with the most rainfall is August, when the rain falls for 27.3 days and typically aggregates up to 8.54" (217mm) of precipitation.

How much does it rain in August?

In August, the rain falls for 27.3 days. Throughout August, 8.54" (217mm) of precipitation is accumulated.

When is the ocean warmest?

With an average ocean temperature of 87.3°F (30.7°C), August is the month with the warmest seawater in Fort Myers Beach.

What is the ocean temperature in August?

In August, the average ocean temperature is 87.3°F (30.7°C). 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.

What is the average length of the day in August?

The average day length in August is 13h and 2min.

What time are sunrise and sunset in August?

On the first day of August, sunrise is at 6:53 am and sunset at 8:14 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 7:48 pm EDT.

How long on average sun shines in August?

The average sunshine duration in August is 9.6h.

What are the months with the highest UV index?

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

How high is the UV index in August?

In Fort Myers Beach, Florida, the average daily maximum UV index in August is 7. A UV Index estimate of 6 to 7 represents a high health risk from exposure to Sun's UV rays.

Average temperature in August
Fort Myers Beach, FL

Average temperature in August - Fort Myers Beach, FL
  • Average high temperature in August: 88°F

The warmest month (with the highest average high temperature) is August (88°F).
The month with the lowest average high temperature is January (69.8°F).

  • Average low temperature in August: 81.1°F

The month with the highest average low temperature is August (81.1°F).
The coldest month (with the lowest average low temperature) is January (59.5°F).

Average pressure in August
Fort Myers Beach, FL

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

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is September (29.95"Hg).

Average wind speed in August
Fort Myers Beach, FL

Average wind speed in August - Fort Myers Beach, FL
  • Average wind speed in August: 7.3mph

The windiest months (with the highest average wind speed) are October and November (10.1mph).
The calmest month (with the lowest average wind speed) is July (6.9mph).

Average humidity in August
Fort Myers Beach, FL

Average humidity in August - Fort Myers Beach, FL
  • Average humidity in August: 73%

The month with the highest relative humidity is December (77%).
The months with the lowest relative humidity are March, May, July, August and October (73%).

Average rainfall in August
Fort Myers Beach, FL

Average rainfall in August - Fort Myers Beach, FL
  • Average rainfall in August: 8.54"

The wettest month (with the highest rainfall) is August (8.54").
The driest month (with the least rainfall) is February (1.06").

Average rainfall days in August
Fort Myers Beach, FL

Average rainfall days in August - Fort Myers Beach, FL
  • Average rainfall days in August: 27.3 days

The month with the highest number of rainy days is August (27.3 days).
The month with the least rainy days is February (8.2 days).

Average sea temperature in August
Fort Myers Beach, FL

Average sea temperature in August - Fort Myers Beach, FL
  • Average sea temperature in August: 87.2°F

The best month for swimming (with the highest average sea temperature) is August (87.2°F).
The coldest month (with the lowest average sea temperature) is January (66.6°F).

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

Average daylight in August / Average sunshine in August - Fort Myers Beach, FL
  • Average daylight in August: 13h and 0min

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 month with the most sunshine is May (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).

Average sunshine days in August
Fort Myers Beach, FL

Average sunshine days in August - Fort Myers Beach, FL
  • Average sunshine days in August: 2.3 days

The month with the most sunshine days is January (19.8 days).
The month with the least sunshine days is August (2.3 days).

Average UV index in August
Fort Myers Beach, FL

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

Average cloud cover in August
Fort Myers Beach, FL

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

The month with the most cloud cover is January (Cloud cover 29).
The months with the least cloud cover are March and May (Cloud cover 23).

Average visibility in August
Fort Myers Beach, FL

Average visibility in August - Fort Myers Beach, 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).

Fort Myers Beach, Florida, USA

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