August weather forecast
Saint Simons Island, GA

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A long pier with a large shed on the St. Simons Island, Georgia, the rocks and seawater and colorful sunset clouds in the sky above
A long pier with a large shed on the St. Simons Island, Georgia, the rocks and seawater and colorful sunset clouds in the sky above

Weather in August

August prolongs the summer season on Saint Simons Island, with July and August sharing the same intensity of heat. The fluctuation in humidity is quite unmistakable as one transitions from July to August, pairing with a high probability of rainy days. The gust of wind slightly weakens, and a thick layer of cloud cover keeps the sunlight at bay. August marks its zenith with the highest sea temperature reading of 83.4°F (28.6°C), a mild rise of 1.1°F (-17.2°C) from July. Despite some afternoon storms, beach, and water activities remain in full swing during this month.

Temperature

Transitioning from July to August, Saint Simons Island observes an average high-temperature of a still hot 88.3°F (31.3°C), differing subtly from the previous month. The nighttime temperature in Saint Simons Island, during August, averages of 77.4°F (25.2°C).

Heat index

The heat index in August is calculated to be a scorching 105.8°F (41°C). Exercise increased caution, heat cramps and heat exhaustion are potential hazards. Continuous activity could lead to heatstroke.
Observations indicate that the heat index values are for shady locations with light wind. 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 'real feel' or 'felt air temperature', offers an insight into how hot it feels when we factor in moisture content. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.
In the face of high temperatures, the human body's reflex is to perspire, leveraging sweat evaporation for cooling. Under conditions of high temperature and humidity (enhanced heat index), sweat production is compromised, exacerbating the sensation of warmth. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

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

Rainfall

August is the month with the most rainfall. Rain falls for 23.3 days and accumulates 3.43" (87mm) of precipitation.

Snowfall

January, March through November are months without snowfall in Saint Simons Island.

Ocean temperature

The month with the warmest seawater is August, with an average ocean temperature of 83.5°F (28.6°C).
Note: Water temperatures between 77°F (25°C) and 84.2°F (29°C) are regarded as very warm, ensuring all water activities are pleasurable for extended periods without feeling uneasy.

Daylight

The average length of the day in August is 13h and 15min.
On the first day of August in Saint Simons Island, sunrise is at 6:42 am and sunset at 8:20 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 7:49 pm EDT.

Sunshine

In Saint Simons Island, the average sunshine in August is 10.6h.

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 risk from exposure to the Sun's UV radiation for average individuals.
Note: The maximum daily UV index of 7 in August interprets into the following recommendations:
Stay clear of intense sun exposure. Solar protection is of utmost significance. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Notice! The reflection of water and sand increases the UV radiation significantly.
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Frequently asked questions

How hot is it in Saint Simons Island in August?

The high-temperature in Saint Simons Island during August is 88.3°F (31.3°C) and the low-temperature is 77.4°F (25.2°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines air temperature and relative humidity, in August is calculated to be 105.8°F (41°C).

What are the most humid months in Saint Simons Island?

August and December, with an average relative humidity of 78%, are most humid months in Saint Simons Island, Georgia.

What is the average humidity in August in Saint Simons Island?

The average relative humidity in August in Saint Simons Island, Georgia, is 78%.

What is the wettest month in Saint Simons Island?

The month with the most rainfall in Saint Simons Island, Georgia, is August, when the rain falls for 23.3 days and typically aggregates up to 3.43" (87mm) of precipitation.

How much does it rain in Saint Simons Island in August?

In Saint Simons Island, Georgia, in August, it is raining for 23.3 days, with typically 3.43" (87mm) of accumulated precipitation.

When it does not snow in Saint Simons Island?

In Saint Simons Island, snow does not fall in January, March through November.

What is the month with the warmest ocean in Saint Simons Island?

The month with the warmest seawater is August, with an average ocean temperature of 83.5°F (28.6°C).

What is the water temperature in August in Saint Simons Island?

In Saint Simons Island, Georgia, the average seawater temperature in August is 83.5°F (28.6°C). 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.

What is the average length of the day in August in Saint Simons Island?

The average day length in August in Saint Simons Island, Georgia, is 13h and 15min.

What time are sunrise and sunset in August in Saint Simons Island?

In August, on the first day of the month, sunrise is at 6:42 am and sunset at 8:20 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 7:49 pm EDT.

How many hours of sunshine does Saint Simons Island have in August?

In Saint Simons Island, Georgia, the average sunshine duration in August is 10.6h.

What are the months with the highest UV index in Saint Simons Island?

The months with the highest UV index in Saint Simons Island are May through September, with an average maximum UV index of 7.

What is the UV index reading in August in Saint Simons Island?

In Saint Simons Island, the average daily maximum UV index in August is 7. A UV Index of 6 to 7 symbolizes a high health threat from unprotected exposure to UV radiation.
Average humidity
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 Simons Island, GA

Average temperature in August - Saint Simons Island, GA
  • Average high temperature in August: 88.3°F

The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is January (60.4°F).

  • Average low temperature in August: 77.4°F

The month with the highest average low temperature is August (77.4°F).
The coldest month (with the lowest average low temperature) is January (47.7°F).

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Average pressure in August
Saint Simons Island, GA

Average pressure in August - Saint Simons Island, GA
  • Average pressure in August: 29.98"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.98"Hg).

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Average wind speed in August
Saint Simons Island, GA

Average wind speed in August - Saint Simons Island, GA
  • Average wind speed in August: 6.9mph

The windiest months (with the highest average wind speed) are January and April (8.8mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).

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Average humidity in August
Saint Simons Island, GA

Average humidity in August - Saint Simons Island, GA
  • Average humidity in August: 78%

The months with the highest relative humidity are August and December (78%).
The month with the lowest relative humidity is March (72%).

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Average rainfall in August
Saint Simons Island, GA

Average rainfall in August - Saint Simons Island, GA
  • Average rainfall in August: 3.43"

The wettest month (with the highest rainfall) is August (3.43").
The driest month (with the least rainfall) is January (0.59").

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Average rainfall days in August
Saint Simons Island, GA

Average rainfall days in August - Saint Simons Island, GA
  • Average rainfall days in August: 23.3 days

The month with the highest number of rainy days is August (23.3 days).
The month with the least rainy days is January (8.2 days).

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Average snowfall days in August
Saint Simons Island, GA

Average snowfall days in August - Saint Simons Island, GA
  • Average snowfall days in August: 0 days

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

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Average sea temperature in August
Saint Simons Island, GA

Average sea temperature in August - Saint Simons Island, GA
  • Average sea temperature in August: 83.4°F

The best month for swimming (with the highest average sea temperature) is August (83.4°F).
The coldest month (with the lowest average sea temperature) is February (58.5°F).

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Average daylight in August /
Average sunshine in August
Saint Simons Island, GA

Average daylight in August / Average sunshine in August - Saint Simons Island, GA
  • Average daylight in August: 13h and 1min

The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).

  • 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 Simons Island, GA

Average sunshine days in August - Saint Simons Island, GA
  • Average sunshine days in August: 4.2 days

The month with the most sunshine days is March (20.1 days).
The month with the least sunshine days is August (4.2 days).

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Average UV index in August
Saint Simons Island, GA

Average UV index in August - Saint Simons Island, GA
  • Average UV index in August: 7

The 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 3).

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Average cloud cover in August
Saint Simons Island, GA

Average cloud cover in August - Saint Simons Island, GA
  • Average cloud cover in August: 29

The months with the most cloud cover are February and December (Cloud cover 38).
The months with the least cloud cover are April, May, June and July (Cloud cover 27).

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Average visibility in August
Saint Simons Island, GA

Average visibility in August - Saint Simons Island, GA
  • 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 Simons Island, Georgia, USA

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