August weather forecast
Stuart, FL

Weather in August

The last month of the summer, August, is another tropical month in Stuart, Florida, with an average temperature varying between 87.1°F (30.6°C) and 79.3°F (26.3°C).

Temperature

With an average high-temperature of 87.1°F (30.6°C) and an average low-temperature of 79.3°F (26.3°C), August is the warmest month.

Heat index

The average heat index in August is estimated at a very hot 102°F (38.9°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Note that heat index values are valued for light wind and location in the shade. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'real feel', 'felt air temperature', or 'apparent temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (metabolic differences, wind, 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. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by 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. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

June and August, with an average relative humidity of 78%, are the most humid months.

Rainfall

The month with the most rainfall in Stuart is August, when the rain falls for 23.1 days and typically aggregates up to 2.56" (65mm) of precipitation.

Ocean temperature

The month with the warmest seawater is August, with an average ocean temperature of 85.1°F (29.5°C).
Note: For any water activity, surface water temperatures between 77°F (25°C) and 84.2°F (29°C) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

In August, the average length of the day in Stuart is 13h and 4min.
On the first day of August in Stuart, sunrise is at 6:45 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 7:42 pm EDT.

Sunshine

July and August, with an average of 10.9h of sunshine, are months with the most sunshine.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index in Stuart, Florida. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 7 in August transform into the following instructions:
Take precautions against overexposure. Protection against sun damage is needed. 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. 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. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.
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FAQ

What is the warmest month in Stuart?

The warmest month in Stuart, Florida, is August, with an average high-temperature of 87.1°F (30.6°C) and an average low-temperature of 79.3°F (26.3°C).

What is the temperature in August in Stuart?

The average high-temperature, in August, in Stuart, is 87.1°F (30.6°C), while the average low-temperature is 79.3°F (26.3°C). In August, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines air temperature and relative humidity, is estimated at 102°F (38.9°C).

What is the most humid month in Stuart?

The months with the highest humidity are June and August, with an average relative humidity of 78%.

What is the average humidity in August in Stuart?

In August, the average relative humidity in Stuart is 78%.

What is the wettest month in Stuart?

August is the month with the most rainfall in Stuart. Rain falls for 23.1 days and accumulates 2.56" (65mm) of precipitation.

How much does it rain in Stuart in August?

In Stuart, in August, it is raining for 23.1 days, with typically 2.56" (65mm) of accumulated precipitation.

What month is the ocean warmest in Stuart?

The month with the warmest seawater in Stuart, Florida, is August, with an average ocean temperature of 85.1°F (29.5°C).

How warm is the water in August in Stuart?

In Stuart, in August, the average water temperature is 85.1°F (29.5°C). Water temperature between 77°F (25°C) and 84.2°F (29°C) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

How many hours of daylight does Stuart have in August?

In Stuart, Florida, the average day length in August is 13h and 4min.

When is the sunrise / sunset in August in Stuart?

In August, on the first day of the month, sunrise is at 6:45 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 7:42 pm EDT.

What is the month with the most sunshine in Stuart?

The months with the most sunshine in Stuart are July and August, with an average of 10.9h of sunshine.

How many hours of sunshine does Stuart have in August?

In Stuart, the average sunshine duration in August is 10.9h.

What are the months with the highest UV index in Stuart?

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

What is the UV index reading in August in Stuart?

In Stuart, Florida, the average daily maximum UV index in August is 7. A UV Index estimate of 6 to 7 represents a high hazard to health from unprotected exposure to UV radiation.

Average temperature in August
Stuart, FL

Average temperature in August - Stuart, FL
  • Average high temperature in August: 87.1°F

The warmest month (with the highest average high temperature) is August (87.1°F).
The month with the lowest average high temperature is January (71.4°F).

  • Average low temperature in August: 79.3°F

The month with the highest average low temperature is August (79.3°F).
The coldest month (with the lowest average low temperature) is January (61.2°F).

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Average pressure in August
Stuart, FL

Average pressure in August - Stuart, FL
  • Average pressure in August: 30"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is September (29.96"Hg).

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Average wind speed in August
Stuart, FL

Average wind speed in August - Stuart, FL
  • Average wind speed in August: 7.3mph

The windiest months (with the highest average wind speed) are January, March and November (10.3mph).
The calmest month (with the lowest average wind speed) is July (7.1mph).

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Average humidity in August
Stuart, FL

Average humidity in August - Stuart, FL
  • Average humidity in August: 78%

The months with the highest relative humidity are June and August (78%).
The month with the lowest relative humidity is March (70%).

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Average rainfall in August
Stuart, FL

Average rainfall in August - Stuart, FL
  • Average rainfall in August: 2.56"

The wettest month (with the highest rainfall) is August (2.56").
The driest month (with the least rainfall) is January (0.39").

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Average rainfall days in August
Stuart, FL

Average rainfall days in August - Stuart, FL
  • Average rainfall days in August: 23.1 days

The month with the highest number of rainy days is August (23.1 days).
The month with the least rainy days is February (7.7 days).

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Average sea temperature in August
Stuart, FL

Average sea temperature in August - Stuart, FL
  • Average sea temperature in August: 85.1°F

The best month for swimming (with the highest average sea temperature) is August (85.1°F).
The coldest month (with the lowest average sea temperature) is February (73.3°F).

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Average daylight in August /
Average sunshine in August
Stuart, FL

Average daylight in August / Average sunshine in August - Stuart, FL
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 13h and 50min).
The month with the shortest days is December (Average daylight: 10h and 28min).

  • Average sunshine in August: 10h and 54min

The months with the most sunshine are July and August (Average sunshine: 10h and 54min).
The months with the least sunshine are January and December (Average sunshine: 6h and 6min).

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Average sunshine days in August
Stuart, FL

Average sunshine days in August - Stuart, FL
  • Average sunshine days in August: 3.4 days

The month with the most sunshine days is January (19.5 days).
The month with the least sunshine days is August (3.4 days).

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Average UV index in August
Stuart, FL

Average UV index in August - Stuart, 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 December (UV index 5).

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Average cloud cover in August
Stuart, FL

Average cloud cover in August - Stuart, FL
  • Average cloud cover in August: 27

The months with the most cloud cover are January, November and December (Cloud cover 34).
The months with the least cloud cover are May and July (Cloud cover 26).

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Average visibility in August
Stuart, FL

Average visibility in August - Stuart, 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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