August weather forecast
South Palm Beach, FL

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Weather in August

The last month of the summer, August, is also a hot month in South Palm Beach, Florida, with an average temperature ranging between max 86.7°F (30.4°C) and min 81.5°F (27.5°C).

Temperature

August is South Palm Beach's warmest month, registering average high temperatures of 86.7°F (30.4°C) and lows of 81.5°F (27.5°C).

Heat index

August's mean heat index is calculated to be a very hot 98.6°F (37°C). Adopt extra safety steps, risk of heat exhaustion and heat cramps is notable. Sustained activity might cause heatstroke.
Note that heat index values are valued for light wind and location in the shade. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', gauges the sensation of temperature factoring in the air's moisture content. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.
The physiological response of the human body to excess warmth is to perspire, thereby cooling itself through sweat evaporation. When there is abundant moisture in the air, the body's cooling through the evaporation process becomes less effective, leading to the sensation of overheating. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.

Humidity

The average relative humidity in August in South Palm Beach is 74%.

Rainfall

The month with the most rainfall is August, when the rain falls for 27.3 days and typically aggregates up to 9.06" (230mm) of precipitation.

Ocean temperature

The month with the warmest seawater is August, with an average ocean temperature of 85.6°F (29.8°C).
Note: In water activities such as swimming and diving, temperatures from 77°F (25°C) to 84.2°F (29°C) are deemed highly pleasurable for extended periods without any unease.

Daylight

In August, the average length of the day in South Palm Beach is 13h and 3min.
On the first day of the month, sunrise is at 6:45 am and sunset at 8:07 pm. On the last day of August, in South Palm Beach, Florida, sunrise is at 6:59 am and sunset at 7:40 pm EDT.

Sunshine

July and August, with an average of 10.7h 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 South Palm Beach. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for the average person.
Note: An average maximum UV index of 7 in August leads to these recommendations:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Be mindful! Sand and water reflections can up the Sun's UV exposure.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What part of the year is the hottest in South Palm Beach?

The warmest period tends to be August, when average temperatures fluctuate between a high of 86.7°F (30.4°C) and a low of 81.5°F (27.5°C).

Is it hot in South Palm Beach during August?

In August, in South Palm Beach, the average high-temperature is 86.7°F (30.4°C), and the average low-temperature is 81.5°F (27.5°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in August is calculated to be 98.6°F (37°C).

What is the average humidity in August in South Palm Beach?

The average relative humidity in August is 74%.

What is the wettest month in South Palm Beach?

August is the month with the most rainfall in South Palm Beach. Rain falls for 27.3 days and accumulates 9.06" (230mm) of precipitation.

How many days does it rain in August in South Palm Beach?

In August, in South Palm Beach, Florida, the rain falls for 27.3 days. Throughout August, 9.06" (230mm) of precipitation is accumulated.

What month is the ocean warmest in South Palm Beach?

With an average ocean temperature of 85.6°F (29.8°C), August is the month with the warmest seawater in South Palm Beach, Florida.

What is the ocean temperature in August in South Palm Beach?

In South Palm Beach, the average seawater temperature in August is 85.6°F (29.8°C). For swimming, diving, and other water activities, temperatures between 77°F (25°C) and 84.2°F (29°C) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

How many hours of daylight does South Palm Beach have in August?

In August, the average day length in South Palm Beach, Florida, is 13h and 3min.

When is the sunrise / sunset in August in South Palm Beach?

In August, on the first day of the month, sunrise is at 6:45 am and sunset at 8:07 pm. On the last day of the month, in South Palm Beach, Florida, sunrise is at 6:59 am and sunset at 7:40 pm EDT.

What are the months with the most sunshine in South Palm Beach?

The months with the most sunshine in South Palm Beach, Florida, are July and August, with an average of 10.7h of sunshine.

How long on average sun shines in August in South Palm Beach?

In South Palm Beach, Florida, the average sunshine duration in August is 10.7h.

When is the highest UV index in South Palm Beach?

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

What is the UV index intensity in August in South Palm Beach?

The average daily maximum UV index in August is 7. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to Sun's UV rays.

Average temperature in August
South Palm Beach, FL

Average temperature in August - South Palm Beach, FL
  • Average high temperature in August: 86.7°F

The warmest month (with the highest average high temperature) is August (86.7°F).
The month with the lowest average high temperature is January (72.5°F).

  • Average low temperature in August: 81.5°F

The month with the highest average low temperature is August (81.5°F).
The coldest month (with the lowest average low temperature) is January (64°F).

Average pressure in August
South Palm Beach, FL

Average pressure in August - South Palm Beach, FL
  • Average pressure in August: 29.99"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are September and October (29.96"Hg).

Average wind speed in August
South Palm Beach, FL

Average wind speed in August - South Palm Beach, FL
  • Average wind speed in August: 8.1mph

The windiest month (with the highest average wind speed) is March (11.5mph).
The calmest month (with the lowest average wind speed) is July (7.7mph).

Average humidity in August
South Palm Beach, FL

Average humidity in August - South Palm Beach, FL
  • Average humidity in August: 74%

The months with the highest relative humidity are June and December (76%).
The month with the lowest relative humidity is March (70%).

Average rainfall in August
South Palm Beach, FL

Average rainfall in August - South Palm Beach, FL
  • Average rainfall in August: 9.06"

The wettest month (with the highest rainfall) is August (9.06").
The driest month (with the least rainfall) is January (1.3").

Average rainfall days in August
South Palm Beach, FL

Average rainfall days in August - South Palm 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 (13.3 days).

Average sea temperature in August
South Palm Beach, FL

Average sea temperature in August - South Palm Beach, FL
  • Average sea temperature in August: 85.7°F

The best month for swimming (with the highest average sea temperature) is August (85.7°F).
The coldest month (with the lowest average sea temperature) is January (74.1°F).

Average daylight in August /
Average sunshine in August
South Palm Beach, FL

Average daylight in August / Average sunshine in August - South Palm 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: 10h and 4min

The months with the most sunshine are July and August (Average sunshine: 10h and 42min).
The months with the least sunshine are January and December (Average sunshine: 6h and 0min).

Average sunshine days in August
South Palm Beach, FL

Average sunshine days in August - South Palm Beach, FL
  • Average sunshine days in August: 2.7 days

The month with the most sunshine days is March (12.7 days).
The month with the least sunshine days is July (2.3 days).

Average UV index in August
South Palm Beach, FL

Average UV index in August - South Palm 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 month with the lowest UV index is January (UV index 5).

Average cloud cover in August
South Palm Beach, FL

Average cloud cover in August - South Palm Beach, FL
  • Average cloud cover in August: 30

The months with the most cloud cover are January, October, November and December (Cloud cover 36).
The months with the least cloud cover are April and July (Cloud cover 29).

Average visibility in August
South Palm Beach, FL

Average visibility in August - South Palm 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).

South Palm Beach, Florida, USA

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