August weather forecast
Saint Petersburg, FL

Beautiful clear waterfront, scenic palm trees, and a straight road to St. Petersburg in Florida
Beautiful clear waterfront, scenic palm trees, and a straight road to St. Petersburg in Florida

Weather in August

August, the last month of the summer in Saint Petersburg, is another hot month, with an average temperature varying between 88.7°F (31.5°C) and 79.5°F (26.4°C).

Temperature

With an average high-temperature of 88.7°F (31.5°C) and an average low-temperature of 79.5°F (26.4°C), August is the warmest month.

Heat index

The average heat index in August is evaluated at a blistering 104°F (40°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
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 'real feel', 'apparent temperature', 'felt air temperature', or 'feels like', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. This effect is individual, with diverse people perceiving weather differently for numerous reasons (metabolic differences, pregnancy, wind), and activity. 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. 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 surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

In Saint Petersburg, the average relative humidity in August is 73%.

Rainfall

In Saint Petersburg, Florida, during 25.6 rainfall days, 4.76" (121mm) of precipitation is typically accumulated. Throughout the year, there are 172.1 rainfall days, and 27.2" (691mm) of precipitation is accumulated.

Ocean temperature

The month with the warmest seawater in Saint Petersburg is August, with an average ocean temperature of 86.7°F (30.4°C).
Note: The surface water temperatures above 86°F (30°C) are arguably considered as unpleasant for swimming, and any intense water activity, as the refreshing effect of water is missing.

Daylight

In August, the average length of the day is 13h and 6min.
On the first day of the month, sunrise is at 6:53 am and sunset at 8:20 pm. On the last day of August, in Saint Petersburg, sunrise is at 7:08 am and sunset at 7:52 pm EDT.

Sunshine

The average sunshine in August is 9.7h.

UV index

The months with the highest UV index in Saint Petersburg are May through September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: The average daily UV index of 7 in August transform into the following instructions:
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. 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 strength of the UV rays is significantly increased by the reflection of the water and sand.
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FAQ

What is the warmest month in Saint Petersburg?

With an average high-temperature of 88.7°F (31.5°C) and an average low-temperature of 79.5°F (26.4°C), August is the warmest month in Saint Petersburg, Florida.

What is the temperature in August in Saint Petersburg?

The average high-temperature, in August, is 88.7°F (31.5°C), while the average low-temperature is 79.5°F (26.4°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, in August is evaluated at 104°F (40°C).

What is the average humidity in August in Saint Petersburg?

The average relative humidity in August in Saint Petersburg, Florida, is 73%.

How many days does it rain in August in Saint Petersburg?

In Saint Petersburg, in August, during 25.6 rainfall days, 4.76" (121mm) of precipitation is typically accumulated.

When is the ocean warmest in Saint Petersburg?

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

What is the ocean temperature in August in Saint Petersburg?

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 Saint Petersburg?

The average day length in August in Saint Petersburg is 13h and 6min.

When are sunrise and sunset in August in Saint Petersburg?

In August, on the first day of the month, sunrise is at 6:53 am and sunset at 8:20 pm. On the last day of the month, in Saint Petersburg, Florida, sunrise is at 7:08 am and sunset at 7:52 pm EDT.

How many hours of sunshine does Saint Petersburg have in August?

In Saint Petersburg, the average sunshine duration in August is 9.7h.

What is the month with the highest UV index in Saint Petersburg?

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

How high is the UV index in August in Saint Petersburg?

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

Average temperature in August
Saint Petersburg, FL

Average temperature in August - Saint Petersburg, FL
  • Average high temperature in August: 88.7°F

The warmest month (with the highest average high temperature) is August (88.7°F).
The month with the lowest average high temperature is January (67.6°F).

  • Average low temperature in August: 79.5°F

The month with the highest average low temperature is August (79.5°F).
The coldest month (with the lowest average low temperature) is January (55.2°F).

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Average pressure in August
Saint Petersburg, FL

Average pressure in August - Saint Petersburg, FL
  • Average pressure in August: 29.98"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.96"Hg).

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Average wind speed in August
Saint Petersburg, FL

Average wind speed in August - Saint Petersburg, FL
  • Average wind speed in August: 6.8mph

The windiest months (with the highest average wind speed) are January, March, October and November (8.9mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).

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Average humidity in August
Saint Petersburg, FL

Average humidity in August - Saint Petersburg, FL
  • Average humidity in August: 73%

The month with the highest relative humidity is December (76%).
The month with the lowest relative humidity is May (71%).

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Average rainfall in August
Saint Petersburg, FL

Average rainfall in August - Saint Petersburg, FL
  • Average rainfall in August: 4.76"

The wettest month (with the highest rainfall) is July (5.24").
The driest months (with the least rainfall) are February and November (0.75").

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Average rainfall days in August
Saint Petersburg, FL

Average rainfall days in August - Saint Petersburg, FL
  • Average rainfall days in August: 25.6 days

The month with the highest number of rainy days is July (26.2 days).
The month with the least rainy days is November (7 days).

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Average sea temperature in August
Saint Petersburg, FL

Average sea temperature in August - Saint Petersburg, 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°F).

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Average daylight in August /
Average sunshine in August
Saint Petersburg, FL

Average daylight in August / Average sunshine in August - Saint Petersburg, FL
  • Average daylight in August: 13h and 6min

The month with the longest days is June (Average daylight: 13h and 52min).
The month with the shortest days is December (Average daylight: 10h and 25min).

  • Average sunshine in August: 9h and 42min

The month with the most sunshine is May (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).

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Average sunshine days in August
Saint Petersburg, FL

Average sunshine days in August - Saint Petersburg, FL
  • Average sunshine days in August: 3.7 days

The month with the most sunshine days is January (22.1 days).
The month with the least sunshine days is July (3.1 days).

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Average UV index in August
Saint Petersburg, FL

Average UV index in August - Saint Petersburg, 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 4).

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Average cloud cover in August
Saint Petersburg, FL

Average cloud cover in August - Saint Petersburg, FL
  • Average cloud cover in August: 27

The month with the most cloud cover is December (Cloud cover 30).
The month with the least cloud cover is May (Cloud cover 21).

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Average visibility in August
Saint Petersburg, FL

Average visibility in August - Saint Petersburg, 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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