August weather forecast and climate
Longboat Key, FL

The last month of the summer, August, is another hot month in Longboat Key, Florida, with average temperature fluctuating between 88.5°F (31.4°C) and 79.7°F (26.5°C).

Temperature

With an average high-temperature of 88.5°F (31.4°C) and an average low-temperature of 79.7°F (26.5°C), August is the warmest month.

Heat index

The average heat index in August is estimated at a blistering 104°F (40°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
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 'felt air temperature', 'real feel', 'feels like', or 'apparent temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Additional factors like wind, pregnancy, clothing, and activity influence one's weather impression. 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 particularly important for children. 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.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

In Longboat Key, Florida, the average relative humidity in August is 74%.

Rainfall

The month with the most rainfall is August when the rain falls for 26.8 days and typically aggregates up to 6.42" (163mm) of precipitation.

Ocean temperature

With an average ocean temperature of 86.7°F (30.4°C), August is the month with the warmest seawater in Longboat Key.
Note: For swimming, other intense water activities, temperature above 86°F (30°C) is arguably unpleasant, as the water cooling effect is missing.

Daylight

The average length of the day in August is 13.1h.

Sunshine

In August, the average sunshine is 9.6h.

UV index

Months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 7 interpret into the following advice:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.

What is the warmest month in Longboat Key?

With an average high-temperature of 88.5°F (31.4°C) and an average low-temperature of 79.7°F (26.5°C), August is the warmest month in Longboat Key.

What is the temperature in August in Longboat Key?

The average high-temperature, in August, in Longboat Key, is 88.5°F (31.4°C), while the average low-temperature is 79.7°F (26.5°C). In August, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), that combines air temperature and relative humidity, is estimated at 104°F (40°C).

What is the average humidity in August in Longboat Key?

In August, the average relative humidity in Longboat Key is 74%.

How many days does it rain in August in Longboat Key?

In Longboat Key, Florida, during August, the rain falls for 26.8 days and regularly aggregates up to 6.42" (163mm) of precipitation.

What is the wettest month in Longboat Key?

The month with the most rainfall in Longboat Key is August when the rain falls for 26.8 days and typically aggregates up to 6.42" (163mm) of precipitation.

What month is the ocean warmest in Longboat Key?

With an average ocean temperature of 86.7°F (30.4°C), August is the month with the warmest seawater in Longboat Key, Florida.

How warm is the water in August in Longboat Key?

In August, the average ocean temperature is 86.7°F (30.4°C). For swimming, other intense water activities, temperature above 86°F (30°C) is arguably unpleasant, as the water cooling effect is missing.

What is the average length of the day in August in Longboat Key?

The average length of the day in August in Longboat Key is 13.1h.

How many hours of sunshine does Longboat Key have in August?

The average sunshine in August in Longboat Key, Florida, is 9.6h.

When is the highest UV index in Longboat Key?

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

What is the UV index reading in August in Longboat Key?

In August, the average daily maximum UV index is 7. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to the Sun's UV rays.
Average temperature in August - Longboat Key, FL
  • Average high temperature in August: 88.5°F

The warmest month (with the highest average high temperature) is August (88.5°F).
The month with the lowest average high temperature is January (68.5°F).

  • Average low temperature in August: 79.7°F

The month with the highest average low temperature is August (79.7°F).
The coldest month (with the lowest average low temperature) is January (56.1°F).

Average pressure in August - Longboat Key, FL
  • Average pressure in August: 29.98"

The month with the highest atmospheric pressure is January (30.13").
The month with the lowest atmospheric pressure is September (29.95").

Average wind speed in August - Longboat Key, FL
  • Average wind speed in August: 6.7mph

The windiest month (with the highest average wind speed) is January (9.3mph).
The calmest month (with the lowest average wind speed) is July (6.4mph).

Average humidity in August - Longboat Key, FL
  • Average humidity in August: 74%

The month with the highest relative humidity is December (76%).
Months with the lowest relative humidity are March, April and May (72%).

Average rainfall in August - Longboat Key, FL
  • Average rainfall in August: 6.42"

The wettest month (with the highest rainfall) is August (6.42").
The driest months (with the least rainfall) are February and November (1.06").

Average rainfall days in August - Longboat Key, FL
  • Average rainfall days in August: 26.8 days

The month with the highest number of rainy days is August (26.8 days).
Months with the least rainy days are January, February and November (8.3 days).

Average sea temperature in August - Longboat Key, FL
  • Average sea temperature in August: 86.7°F

The best month for swimming (with the highest average sea temperature) is August (86.7°F).
The coldest month (with the lowest average sea temperature) is January (64.1°F).

Average daylight in August / Average sunshine in August - Longboat Key, FL
  • Average daylight in August: 13.1h

The month with the longest days is June (Average daylight: 13.9h).
The month with the shortest days is December (Average daylight: 10.4h).

  • Average sunshine in August: 9.6h

The month with the most sunshine is May (Average sunshine: 11.1h).
The month with the least sunshine is December (Average sunshine: 6.5h).

Average sunshine days in August - Longboat Key, FL
  • Average sunshine days in August: 2.5 days

The month with the most sunshine days is January (21.1 days).
The month with the least sunshine days is August (2.5 days).

Average UV index in August - Longboat Key, FL
  • Average UV index in August: 7

Months with the highest UV index are May, June, July, August and September (UV index 7).
The month with the lowest UV index is January (UV index 4).

Average cloud cover in August - Longboat Key, FL
  • Average cloud cover in August: 27

Months with the most cloud cover are January and December (Cloud cover 30).
The month with the least cloud cover is May (Cloud cover 22).

Average visibility in August - Longboat Key, FL
  • Average visibility in August: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

°Celsius°Fahrenheit
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