August weather forecast
Saint Augustine Beach, FL

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Weather in August

August, the last month of the summer in Saint Augustine Beach, is also a hot month, with an average temperature ranging between min 77.5°F and max 88.5°F.

Temperature

In August, the average high-temperature registers at a still tropical 88.5°F, nearly identical to July's 88.9°F. The nighttime temperature dips to a warm 77.5°F on average during August.

Heat index

The heat index for August is calculated to be a blistering 105.8°F. Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
When referencing the heat index, its values are suitable for shady environments and light breezes. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', binds temperature metrics with humidity values to give a sense of the actual warmth. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are of high significance for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
Perspiring is the body's way of cooling down, particularly by allowing sweat to evaporate and take the heat with it. An increase in relative humidity disrupts body cooling by slowing the evaporation rate, thereby reducing the rate at which the body cools and amplifying the sense of heat. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.

Humidity

The months with the highest humidity in Saint Augustine Beach are July, August and December, with an average relative humidity of 77%.

Rainfall

August is the month with the most rainfall in Saint Augustine Beach, Florida. Rain falls for 24.8 days and accumulates 4.33" of precipitation.

Snowfall

February through November are months without snowfall.

Daylight

The average length of the day in August in Saint Augustine Beach is 13h and 11min.
On the first day of the month, sunrise is at 6:44 am and sunset at 8:18 pm. On the last day of August, in Saint Augustine Beach, Florida, sunrise is at 7:01 am and sunset at 7:49 pm EDT.

Sunshine

In Saint Augustine Beach, the average sunshine in August is 10.6h.

UV index

May through August, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for average individuals.
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. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. Always opt for UVA and UVB-resistant sunglasses on radiant days.
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FAQ

Is it hot in Saint Augustine Beach during August?

During August, Saint Augustine Beach experiences an average high-temperature of 88.5°F and a low-temperature of 77.5°F. The average heat index (a.k.a. 'real feel', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in August is calculated to be 105.8°F.

What is the most humid month in Saint Augustine Beach?

The months with the highest humidity are July, August and December, with an average relative humidity of 77%.

What is the average humidity in August in Saint Augustine Beach?

In August, the average relative humidity in Saint Augustine Beach, Florida, is 77%.

What is the rainiest month in Saint Augustine Beach?

August is the month with the most rainfall. Rain falls for 24.8 days and accumulates 4.33" of precipitation.

How many days does it rain in August in Saint Augustine Beach?

In Saint Augustine Beach, Florida, during August, the rain falls for 24.8 days and regularly aggregates up to 4.33" of precipitation.

When it does not snow in Saint Augustine Beach?

February through November are months without snowfall in Saint Augustine Beach, Florida.

What is the average length of the day in August in Saint Augustine Beach?

In Saint Augustine Beach, the average day length in August is 13h and 11min.

When is the sunrise / sunset in August in Saint Augustine Beach?

In August, on the first day of the month, sunrise is at 6:44 am and sunset at 8:18 pm. On the last day of the month, in Saint Augustine Beach, Florida, sunrise is at 7:01 am and sunset at 7:49 pm EDT.

How long on average sun shines in August in Saint Augustine Beach?

In August, the average sunshine duration in Saint Augustine Beach, Florida, is 10.6h.

When is the highest UV index in Saint Augustine Beach?

The months with the highest UV index in Saint Augustine Beach are May through August, with an average maximum UV index of 7.

What is the UV index reading in August in Saint Augustine Beach?

In August, the average daily maximum UV index in Saint Augustine Beach is 7. A UV Index value of 6 to 7 symbolizes a high health threat from unsafe 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 snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Saint Augustine Beach, FL

Average temperature in August - Saint Augustine Beach, FL
  • Average high temperature in August: 88.5°F

The warmest month (with the highest average high temperature) is July (88.9°F).
The month with the lowest average high temperature is January (64°F).

  • Average low temperature in August: 77.5°F

The month with the highest average low temperature is August (77.5°F).
The coldest month (with the lowest average low temperature) is January (51.4°F).

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Average pressure in August
Saint Augustine Beach, FL

Average pressure in August - Saint Augustine Beach, FL
  • Average pressure in August: 29.99"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is September (29.98"Hg).

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Average wind speed in August
Saint Augustine Beach, FL

Average wind speed in August - Saint Augustine Beach, FL
  • Average wind speed in August: 6.5mph

The windiest month (with the highest average wind speed) is January (8.5mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).

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Average humidity in August
Saint Augustine Beach, FL

Average humidity in August - Saint Augustine Beach, FL
  • Average humidity in August: 77%

The months with the highest relative humidity are July, August and December (77%).
The month with the lowest relative humidity is March (71%).

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Average rainfall in August
Saint Augustine Beach, FL

Average rainfall in August - Saint Augustine Beach, FL
  • Average rainfall in August: 4.33"

The wettest month (with the highest rainfall) is August (4.33").
The driest month (with the least rainfall) is March (1.18").

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Average rainfall days in August
Saint Augustine Beach, FL

Average rainfall days in August - Saint Augustine Beach, FL
  • Average rainfall days in August: 24.8 days

The month with the highest number of rainy days is August (24.8 days).
The month with the least rainy days is February (10.3 days).

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Average snowfall days in August
Saint Augustine Beach, FL

Average snowfall days in August - Saint Augustine Beach, FL
  • Average snowfall days in August: 0 days

The months with the highest number of snowfall days are January and December (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October and November (0 days).

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Average daylight in August /
Average sunshine in August
Saint Augustine Beach, FL

Average daylight in August / Average sunshine in August - Saint Augustine Beach, FL
  • Average daylight in August: 13h and 1min

The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).

  • Average sunshine in August: 10h and 4min

The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).

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Average sunshine days in August
Saint Augustine Beach, FL

Average sunshine days in August - Saint Augustine Beach, FL
  • Average sunshine days in August: 4.4 days

The month with the most sunshine days is March (17.9 days).
The month with the least sunshine days is August (4.4 days).

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Average UV index in August
Saint Augustine Beach, FL

Average UV index in August - Saint Augustine Beach, FL
  • Average UV index in August: 7

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

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Average cloud cover in August
Saint Augustine Beach, FL

Average cloud cover in August - Saint Augustine Beach, FL
  • Average cloud cover in August: 29

The month with the most cloud cover is December (Cloud cover 38).
The month with the least cloud cover is May (Cloud cover 26).

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Average visibility in August
Saint Augustine Beach, FL

Average visibility in August - Saint Augustine 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).

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Saint Augustine Beach, Florida, USA

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